DDR-30 series

MEAN WELL DDR-15 Series 15W DIN Rail DC-DC Converter

MEAN WELL DDR-15 Series 15W DIN Rail DC-DC Converter | DDR-15G / DDR-15L Models

The MEAN WELL DDR-15 Series is a 15W DIN rail DC-DC converter designed for industrial control systems, factory automation equipment, communication systems, wireless networks and distributed DC power applications requiring compact and reliable isolated DC voltage conversion.

The DDR-15 Series provides two input voltage versions for different DC power architectures: DDR-15G models with 9–36Vdc input and DDR-15L models with 18–75Vdc input. The series offers multiple output voltage options including 3.3Vdc, 5Vdc, 12Vdc, 15Vdc and 24Vdc, allowing flexible integration into industrial controllers, communication devices, battery-powered systems and low-power DC distribution applications.

Designed for space-limited industrial installations, the DDR-15 Series features an ultra-slim 17.5mm (1SU) width design and supports installation on standard TS-35/7.5 or TS-35/15 DIN rails. The compact DIN rail DC-DC converter design helps optimize control cabinet space while maintaining reliable electrical performance for industrial environments.

The DDR-15 Series uses free air convection cooling without a fan and supports a wide operating temperature range from -40°C to +85°C with appropriate derating. It provides stable DC conversion without minimum load requirements and supports adjustable output voltage within ±10% for flexible system integration.

With 4KVdc I/O reinforced isolation, the DDR-15 Series provides electrical separation between input and output circuits, helping improve system safety and reliability in industrial DC power applications. Built-in protection functions include short circuit protection, overload protection, over voltage protection, input reverse polarity protection and input under-voltage lockout.

The DDR-15 Series delivers efficient DC conversion with model-dependent efficiency up to 87%. It is suitable as an isolated DIN rail DC-DC converter for applications including industrial automation systems, semiconductor equipment, electro-mechanical systems, wireless network equipment, telecom/datacom systems, DC voltage regulation and cable voltage drop compensation.

The series includes multiple models covering different input voltage and output voltage requirements:

9–36Vdc input models:
DDR-15G-3.3, DDR-15G-5, DDR-15G-12, DDR-15G-15, DDR-15G-24

18–75Vdc input models:
DDR-15L-3.3, DDR-15L-5, DDR-15L-12, DDR-15L-15, DDR-15L-24

Popular selection options include DDR-15G-24 for 24Vdc output applications with 9–36Vdc input systems and DDR-15L-24 for higher voltage DC input applications requiring 24Vdc output conversion. These compact 15W DIN rail DC-DC converters are commonly selected for industrial control panels, distributed DC power systems and embedded automation equipment.

Available models:

DDR-15G-3.3, DDR-15G-5, DDR-15G-12, DDR-15G-15, DDR-15G-24,

DDR-15L-3.3, DDR-15L-5, DDR-15L-12, DDR-15L-15, DDR-15L-24.

Key Highlights of DDR-15 Series

MEAN WELL DDR-15 Series is a 15W DIN rail DC-DC converter designed for industrial control systems, factory automation equipment, communication systems and distributed DC power applications requiring compact and reliable isolated voltage conversion
Wide DC input options with DDR-15G models supporting 9–36Vdc input and DDR-15L models supporting 18–75Vdc input, providing flexible solutions for different industrial DC power architectures
Multiple output voltage options including 3.3Vdc, 5Vdc, 12Vdc, 15Vdc and 24Vdc, allowing integration into industrial controllers, communication devices, battery-powered systems and compact DC power applications
Ultra-slim 17.5mm (1SU) width design with fanless cooling by free air convection and DIN rail installation support for TS-35/7.5 or TS-35/15 rails, ideal for space-limited control cabinets
Provides 4KVdc I/O reinforced isolation, adjustable DC output voltage within ±10%, and built-in protections including short circuit, overload, over voltage, input reverse polarity and input under-voltage lockout
Supports a wide operating temperature range from -40°C to +85°C with proper derating consideration, ensuring reliable operation in demanding industrial environments
Complete model range including DDR-15G-3.3, DDR-15G-5, DDR-15G-12, DDR-15G-15, DDR-15G-24, DDR-15L-3.3, DDR-15L-5, DDR-15L-12, DDR-15L-15 and DDR-15L-24 for different DC input and output voltage configurations

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Overview of MEAN WELL DDR-15 Series

The MEAN WELL DDR-15 Series is a 15W DIN rail type DC-DC converter designed for industrial control systems, factory automation equipment, semiconductor manufacturing equipment, communication systems, wireless networks and distributed DC power applications requiring stable and isolated DC voltage conversion. With compact DIN rail mounting, reinforced isolation and fanless convection cooling, the series provides a reliable DC power conversion solution for space-limited industrial control cabinets.

The DDR-15 Series offers two wide input voltage platforms according to model requirements: DDR-15G models with 9–36Vdc input and DDR-15L models with 18–75Vdc input. Output voltage options include 3.3Vdc, 5Vdc, 12Vdc, 15Vdc and 24Vdc, supporting different DC power architectures such as industrial control circuits, electronic systems, battery-powered equipment and distributed DC voltage conversion applications.

As part of MEAN WELL’s industrial DIN rail DC-DC converter family, the DDR-15 Series is suitable for applications including factory automation, industrial machinery, semiconductor fabrication equipment, electro-mechanical systems, wireless communication networks and telecom/datacom infrastructure. Common applications include DDR-15G-24 24V DIN rail DC-DC converter, DDR-15L-24 isolated DC-DC converter, 9–36V input DC power conversion and 18–75V input industrial DC voltage conversion.

The series features an ultra-slim 17.5mm (1SU) width design, free air convection cooling and a wide operating temperature range from -40°C to +85°C with proper derating consideration. The DDR-15 Series supports adjustable output voltage within ±10%, no minimum load requirement and efficiency up to 87% depending on model, helping improve system reliability and thermal performance in compact industrial applications.

For demanding industrial environments, the DDR-15 Series provides 4KVdc I/O reinforced isolation and complies with safety standards including UL/IEC 62368-1 and AS/NZS 62368-1. Built-in protection functions include short circuit protection, overload protection, over voltage protection, input reverse polarity protection and input under-voltage lockout.

The DDR-15 Series supports installation on standard DIN rail TS-35/7.5 or TS-35/15 and is suitable for compact control cabinets where reliable DC voltage conversion and electrical isolation are required. Typical system applications include DC buck/boost regulation, increasing system insulation level and voltage drop compensation along long cable runs.

Available models include:

DDR-15G-3.3, DDR-15G-5, DDR-15G-12, DDR-15G-15, DDR-15G-24 for 9–36Vdc input systems, and

DDR-15L-3.3, DDR-15L-5, DDR-15L-12, DDR-15L-15, DDR-15L-24 for 18–75Vdc input applications.

Features of MEAN WELL DDR-15 Series

15W DIN rail DC-DC converter platform designed for industrial control systems, factory automation equipment, communication systems and distributed DC power applications
Two wide input voltage versions available: DDR-15G with 9–36Vdc input and DDR-15L with 18–75Vdc input for flexible DC system integration
Multiple output voltage options including 3.3Vdc, 5Vdc, 12Vdc, 15Vdc and 24Vdc for industrial electronics, control circuits and compact DC power conversion applications
Ultra-slim 17.5mm (1SU) width DIN rail design suitable for space-limited industrial control cabinets and compact automation systems
Efficiency up to 87% with fanless cooling by free air convection for reliable long-term industrial operation
No minimum load requirement and adjustable DC output voltage within ±10% for flexible system voltage matching
Complete model range including DDR-15G-3.3, DDR-15G-5, DDR-15G-12, DDR-15G-15, DDR-15G-24, DDR-15L-3.3, DDR-15L-5, DDR-15L-12, DDR-15L-15 and DDR-15L-24
4KVdc I/O reinforced isolation for improved electrical separation and reliable industrial DC power system design
Built-in protections including short circuit, overload, over voltage, input reverse polarity and input under-voltage lockout protection
Wide operating temperature range from -40℃ to +85℃ with proper derating consideration for demanding industrial environments
Supports standard DIN rail installation on TS-35/7.5 or TS-35/15 rails for industrial automation and control cabinets
Safety compliance including UL/IEC 62368-1 and AS/NZS 62368-1 for industrial equipment applications
Suitable for DC buck/boost regulation, increasing system insulation level and voltage drop compensation along cable runs
Applications include industrial control systems, semiconductor fabrication equipment, factory automation, electro-mechanical systems, wireless networks and telecom/datacom systems
3-year manufacturer warranty for long-term industrial deployment support

Need help selecting the right model? Compare DDR-15G and DDR-15L based on input voltage range, output voltage requirements and industrial DC power application conditions.

DDR-15 Series Technical Specifications

The table below compares the main electrical specifications of the MEAN WELL DDR-15 Series, including input voltage range, output voltage, rated current, rated power, ripple and noise, voltage adjustment range and typical efficiency across DDR-15G and DDR-15L models with 3.3V, 5V, 12V, 15V and 24V output options.

It helps engineers quickly select the suitable 15W DIN rail DC-DC converter according to DC input voltage requirements, output voltage configuration and industrial power system design conditions.

Model	Input Type	Output Voltage	Rated Current	Current Range	Rated Power	Ripple & Noise Max.	Voltage Adj. Range	Efficiency Typ.
DDR-15G-3.3	9–36Vdc	3.3V	3.5A	0–3.5A	11.6W	50mVp-p	3.0–3.6V	84%
DDR-15G-5	9–36Vdc	5V	3A	0–3A	15W	50mVp-p	4.5–5.5V	84%
DDR-15G-12	9–36Vdc	12V	1.25A	0–1.25A	15W	60mVp-p	9–13.2V	85%
DDR-15G-15	9–36Vdc	15V	1A	0–1A	15W	75mVp-p	13.5–16.5V	85%
DDR-15G-24	9–36Vdc	24V	0.63A	0–0.63A	15W	100mVp-p	21.6–28V	86%
DDR-15L-3.3	18–75Vdc	3.3V	4.5A	0–4.5A	15W	50mVp-p	3.0–3.6V	84%
DDR-15L-5	18–75Vdc	5V	3A	0–3A	15W	50mVp-p	4.5–5.5V	85%
DDR-15L-12	18–75Vdc	12V	1.25A	0–1.25A	15W	60mVp-p	9–13.2V	86%
DDR-15L-15	18–75Vdc	15V	1A	0–1A	15W	75mVp-p	13.5–16.5V	86%
DDR-15L-24	18–75Vdc	24V	0.63A	0–0.63A	15W	100mVp-p	21.6–28V	87%

Input voltage options: DDR-15 Series provides two DC input versions: DDR-15G with 9–36Vdc input and DDR-15L with 18–75Vdc input, supporting different industrial DC power architectures.

Output configuration: The series provides 3.3V, 5V, 12V, 15V and 24V DC output models. DDR-15 Series models provide compact 15W class DC power conversion for industrial control and distributed DC applications.

Performance characteristics: DDR-15 Series features adjustable output voltage within ±10%, no minimum load requirement and efficiency up to 87% for reliable industrial DC voltage conversion.

Protection features: Built-in protection includes short circuit, overload, over voltage, input reverse polarity and input under-voltage lockout protection. Reverse polarity protection uses internal MOSFET design and automatically recovers after fault removal.

Need more technical details? Continue below for installation dimensions, wiring diagrams, derating curves, protection characteristics and application guidelines for DDR-15G and DDR-15L series DC-DC converters.

Model Selection Guide for DDR-15 Series

The MEAN WELL DDR-15 Series provides a flexible range of 15W DIN rail DC-DC converter models designed for industrial control systems, factory automation equipment, communication systems, semiconductor manufacturing equipment and distributed DC power applications. Engineers and system integrators can select the suitable model according to DC input voltage range, output voltage requirement, load current demand, isolation requirements, cabinet space limitations and operating environment.

The DDR-15 Series includes two input voltage platforms: DDR-15G models with 9–36Vdc input and DDR-15L models with 18–75Vdc input. All models share the same compact DIN rail structure, 17.5mm (1SU) width design, fanless convection cooling, 4KVdc I/O reinforced isolation, adjustable output voltage and complete protection functions, while providing different output voltage configurations including 3.3V, 5V, 12V, 15V and 24V DC.

9–36V DC Input Systems (DDR-15G Series)

The DDR-15G Series is designed for low-voltage DC input systems requiring isolated DC voltage conversion, including 12V battery systems, 24V industrial control circuits, automation equipment and distributed DC power applications.

Common selection requirements include DDR-15G-5 DC-DC converter, DDR-15G-12 DIN rail DC-DC converter, DDR-15G-24 24V DIN rail DC-DC converter and 9–36V input DC-DC converter applications.

This series includes DDR-15G-3.3, DDR-15G-5, DDR-15G-12, DDR-15G-15 and DDR-15G-24 models. DDR-15G models are suitable when the system input voltage is within 9–36Vdc and the required output voltage is 3.3V, 5V, 12V, 15V or 24V for control electronics, sensors, communication equipment and industrial automation devices.

18–75V DC Input Systems (DDR-15L Series)

The DDR-15L Series is designed for wider DC input applications requiring stable isolated conversion from 18–75Vdc sources, including 24V industrial systems, 48V DC equipment, telecom-related power systems and distributed DC architectures.

Common selection requirements include DDR-15L-12 DC-DC converter, DDR-15L-24 isolated DC-DC converter, DDR-15L-24 DIN rail DC-DC converter and 18–75V input DC-DC converter applications.

This series includes DDR-15L-3.3, DDR-15L-5, DDR-15L-12, DDR-15L-15 and DDR-15L-24 models, supporting different output voltage requirements for industrial control systems, communication equipment, automation systems and DC power distribution applications.

Output Voltage Selection

The DDR-15 Series provides five output voltage options:

3.3Vdc output: Suitable for low-voltage electronic circuits, embedded systems and compact control modules requiring 3.3V DC conversion.
5Vdc output: Suitable for electronic circuits, embedded systems, sensors and industrial control modules.
12Vdc output: Suitable for industrial electronics, communication devices and control equipment.
15Vdc output: Suitable for specialized electronic systems requiring 15V DC power supply.
24Vdc output: Suitable for industrial control circuits, automation equipment and distributed DC power systems.

System Design & Application Matching

The DDR-15 Series supports various DC system architectures including low-voltage battery systems, 24V industrial control systems, 48V communication systems and distributed DC power applications. Engineers typically select models based on input voltage range, required output voltage, rated current, operating temperature, isolation requirements, DIN rail cabinet space and application environment.

Need help selecting the correct DDR-15 model? Match your input voltage system (DDR-15G or DDR-15L), required output voltage (3.3V/5V/12V/15V/24V), load requirements and installation environment to select the most suitable 15W DIN rail DC-DC converter for your project.

Related MEAN WELL DIN Rail DC-DC Converter Series

For system design comparison and DC power architecture planning, the following MEAN WELL DIN rail DC-DC converter series are commonly used across different power levels for industrial control systems, factory automation equipment, communication systems, control cabinets and distributed DC power applications:

DDR-15 Series – Current series: 15W DIN rail DC-DC converter featuring 9–36Vdc and 18–75Vdc input options, 3.3V / 5V / 12V / 15V / 24V output models, 4KVdc I/O reinforced isolation and ultra-slim 17.5mm width DIN rail design for space-limited industrial applications.
DDR-30 Series – 30W DIN rail DC-DC converter for industrial control systems, automation equipment, communication systems and distributed DC power applications requiring higher output capability with compact DIN rail installation.
DDR-60 Series – 60W DIN rail DC-DC converter for industrial control systems, automation equipment, communication systems and distributed DC power applications requiring increased output capacity and reliable isolated DC conversion.
DDR-120 Series – 120W DIN rail DC-DC converter for higher power industrial control systems, automation equipment and distributed DC power applications requiring greater output capability.
DDR-240 Series – 240W DIN rail DC-DC converter for industrial control cabinets, automation systems, communication equipment and medium-power DC conversion applications.
DDR-480 Series – 480W DIN rail DC-DC converter platform for high-power industrial automation systems, distributed DC power architectures and demanding DC conversion applications.

Need help selecting the right MEAN WELL DDR series converter?

Compare DDR-15, DDR-30, DDR-60, DDR-120, DDR-240 and DDR-480 based on input voltage range, output voltage requirements, rated power, installation space, isolation requirements, efficiency and application environment.

Adjustable Output Voltage, Input Protection and Wide Input Range Operation

The MEAN WELL DDR-15 Series provides practical system-level functions for industrial control systems, factory automation equipment, communication systems, semiconductor manufacturing equipment and distributed DC power applications requiring compact isolated DIN rail DC-DC conversion.

The DDR-15 Series includes two input voltage versions: DDR-15G models with 9–36Vdc input and DDR-15L models with 18–75Vdc input. With regulated output options of 3.3V, 5V, 12V, 15V and 24V, the series supports flexible DC voltage conversion for industrial control circuits, electronic equipment, battery-powered systems and distributed DC power architectures.

The DDR-15 Series provides adjustable output voltage, input under-voltage lockout, MOSFET-based input reverse polarity protection and reinforced 4KVdc I/O isolation. These functions help improve system reliability when the converter is installed in industrial control cabinets, automation equipment and compact DC power systems.

Designed as a compact 15W isolated DIN rail DC-DC converter, the DDR-15 Series focuses on reliable DC voltage conversion, electrical isolation improvement, cable voltage drop compensation and stable operation where DIN rail installation space is limited.

Adjustable Output Voltage

The DDR-15 Series provides regulated DC output voltage with adjustment capability within ±10%. This allows engineers to fine-tune output voltage according to system requirements, cable voltage drop compensation needs, connected load characteristics and control cabinet design conditions.

Output adjustment ranges depend on the selected model:

3.3V output models: adjustable from 3.0V to 3.6V
5V output models: adjustable from 4.5V to 5.5V
12V output models: adjustable from 9V to 13.2V
15V output models: adjustable from 13.5V to 16.5V
24V output models: adjustable from 21.6V to 28V

This flexibility allows DDR-15G-24 and DDR-15L-24 models, for example, to support different 24V industrial DC power system requirements where voltage compensation or precise DC output adjustment is required.

Wide Input Voltage Range and Under-Voltage Lockout

The DDR-15 Series supports two wide DC input ranges:

DDR-15G Series: 9–36Vdc input
DDR-15L Series: 18–75Vdc input

The built-in input under-voltage lockout function protects the converter and connected equipment when the input voltage falls below the required operating threshold.

For DDR-15G models, the converter turns on when input voltage reaches approximately 9Vdc and shuts down below approximately 8.5Vdc. For DDR-15L models, the converter turns on at approximately 18Vdc and shuts down below approximately 17Vdc.

This function helps maintain stable operation in battery-powered systems, mobile DC equipment and industrial applications where input voltage fluctuations may occur during startup or load changes.

Input Reverse Polarity Protection

The DDR-15 Series integrates an internal MOSFET-based input reverse polarity protection design. If DC input polarity is connected incorrectly, the protection circuit prevents normal operation and helps protect the converter from damage.

After removing the fault condition and correcting the input wiring, the unit automatically recovers. This feature is valuable for field installation, control cabinet wiring and maintenance environments where DC polarity errors may occur.

4KVdc I/O Reinforced Isolation

The DDR-15 Series provides 4KVdc input-to-output reinforced isolation, helping improve electrical separation between the DC input source and output circuits.

This isolation capability makes the series suitable for industrial applications requiring improved system safety, noise reduction and reliable DC power conversion between different voltage domains.

Typical applications include industrial automation equipment, semiconductor manufacturing equipment, communication systems and distributed DC power architectures.

No Minimum Load Requirement and Reliable Industrial Operation

Unlike some DC-DC converters that require a minimum output load to maintain regulation, the DDR-15 Series supports operation without minimum load requirements.

Combined with fanless cooling by free air convection, efficiency up to 87% and a wide operating temperature range from -40°C to +85°C, the series provides reliable performance for long-term industrial deployment.

Need installation and system integration details for the DDR-15 Series? Continue below for mechanical specifications, terminal assignments, wiring diagrams, protection functions, derating curves, efficiency curves and application guidance for DDR-15G and DDR-15L configurations.

MEAN WELL DDR-15 Series mechanical drawing with DIN rail converter dimensions and terminal assignment — MEAN WELL DDR-15 Series mechanical drawing showing DIN rail mounting dimensions and terminal pin assignment

Mechanical Dimensions and Installation

The MEAN WELL DDR-15 Series features a compact 15W DIN rail DC-DC converter design optimized for industrial control cabinets, factory automation equipment, communication systems and distributed DC power applications. Its ultra-slim housing, standard DIN rail mounting structure, reinforced 4KVdc I/O isolation and fanless convection cooling provide reliable isolated DC voltage conversion where installation space is limited.

Dimensions

The overall mechanical size of the DDR-15 Series is 17.5 × 90 × 54.5mm (W × H × D). This ultra-slim DIN rail form factor allows efficient installation in compact industrial control cabinets while maintaining reliable DC-DC conversion performance.

The series supports two input voltage platforms:

DDR-15G: 9–36Vdc input
DDR-15L: 18–75Vdc input

With 3.3V, 5V, 12V, 15V and 24V output options, the DDR-15 Series provides flexible integration for industrial automation systems, electronic equipment, communication devices and distributed DC power architectures.

Terminal Assignment

The DDR-15 Series includes dedicated DC input and DC output terminals for standard DIN rail DC-DC converter installation.

The terminal structure supports:

Pin 1: DC output +Vo
Pin 2: DC output -Vo
Pin 3: DC input -Vin
Pin 4: DC input +Vin

The four-pin terminal configuration allows simple integration into industrial control systems, automation equipment and compact DC power distribution applications.

Installation Notes

When installing the DDR-15 Series into industrial equipment or control cabinets, users should ensure correct DIN rail mounting, proper wiring connection, sufficient ventilation space and compliance with operating temperature limitations according to the official datasheet.

Because the DDR-15 Series uses free air convection cooling, sufficient airflow should be maintained around the converter to support reliable long-term operation. System designers should also consider input voltage conditions, output load, ambient temperature and derating requirements during installation.

For low input voltage conditions or high ambient temperature environments, output power may require derating according to the official derating curves.

Mounting and DIN Rail Notes

The DDR-15 Series supports standard TS35/7.5 or TS35/15 DIN rail mounting, allowing secure mechanical installation in industrial control cabinets and automation systems.

The DIN rail mounting design enables quick installation and maintenance while reducing cabinet wiring complexity. The DIN rail itself is not included with the converter and should be prepared separately according to the equipment installation requirements.

Mechanical Design Considerations

For space-limited control cabinets, the 17.5mm width design of the DDR-15 Series provides an ultra-compact solution for isolated DC power conversion while maintaining industrial-grade features including reinforced isolation, adjustable output voltage and multiple protection functions.

Before final system installation, designers should verify:

Input voltage range selection (DDR-15G or DDR-15L)
Required output voltage and load current
Ambient temperature and derating conditions
Cabinet airflow and installation spacing
Grounding and wiring requirements

These considerations help ensure stable DC voltage conversion performance in industrial automation, control systems, communication equipment and distributed DC power applications.

Need application and system integration details for the DDR-15 Series? Continue below to explore recommended applications, protection functions, EMC considerations, wiring diagrams, derating curves and system-level design guidelines for DDR-15G and DDR-15L configurations.

Applications of DDR-15 Series

The MEAN WELL DDR-15 Series is suitable for a wide range of industrial and DC power system applications requiring a compact 15W DIN rail DC-DC converter with wide input voltage capability, reinforced isolation and stable DC output conversion.

With 9–36Vdc input (DDR-15G) and 18–75Vdc input (DDR-15L) options, the series supports multiple DC power architectures including industrial control systems, factory automation equipment, communication systems, embedded electronic systems and distributed DC power applications.

Featuring fanless operation, ultra-slim 17.5mm width DIN rail installation, 4KVdc I/O reinforced isolation, adjustable output voltage, input reverse polarity protection and input under-voltage protection, the DDR-15 Series provides reliable isolated DC conversion for space-limited industrial environments.

Industrial control systems and automation equipment requiring stable 3.3V / 5V / 12V / 15V / 24V DC voltage conversion for controllers, sensors, signal modules and electronic circuits
Factory automation systems, industrial machinery and compact control cabinets requiring reliable DIN rail DC power conversion and electrical isolation between different DC voltage domains
Semiconductor fabrication equipment and electronic manufacturing systems requiring stable DC voltage conversion for control modules, embedded electronics and instrumentation
Telecom, datacom and wireless network equipment requiring distributed DC voltage conversion between different DC power architectures
DC power systems requiring voltage conversion between different architectures including 12V, 24V and 48V DC systems
DC voltage regulation, system insulation improvement and cable voltage drop compensation applications where stable isolated DC output is required
Industrial environments requiring protection functions including short circuit, overload, over voltage, input reverse polarity and input under-voltage protection
Distributed DC power architectures and embedded electronic systems requiring isolated DIN rail DC-DC conversion in compact installations
Electro-mechanical equipment and OEM industrial devices requiring compact, reliable and maintenance-friendly DC voltage conversion solutions
DC power supply replacement applications in control panels, automation systems and compact industrial equipment requiring DIN rail mounting compatibility

Need technical specifications and system integration details for your project? Continue below to review protection functions, EMC information, insulation ratings, mechanical specifications, wiring details and installation requirements for the DDR-15 Series.

Certifications and Safety

The MEAN WELL DDR-15 Series is designed for industrial DC power conversion applications requiring international safety compliance, reinforced isolation and reliable DIN rail mounted DC-DC converter performance. It is suitable for industrial control systems, factory automation equipment, semiconductor manufacturing equipment, telecom/datacom systems, wireless networks and distributed DC power architectures.

According to the official DDR-15 Series datasheet, the series is designed according to the following international safety standards:

IEC 62368-1 approved for industrial and information technology equipment safety requirements
UL 62368-1 approved for North American safety compliance requirements
AS/NZS 62368-1 approved for Australia and New Zealand safety requirements

The DDR-15 Series provides 4KVdc I/O reinforced isolation, helping maintain reliable electrical separation between DC input and output circuits. This isolation capability supports safer system design, improved noise resistance and stable operation in industrial DC voltage conversion applications.

The series also complies with industrial EMC requirements, including immunity tests for electrostatic discharge, radiated electromagnetic fields, electrical fast transient/burst, surge, conducted disturbance and magnetic field interference according to relevant BS EN/EN61000-4 series standards.

For electromagnetic emission performance, the DDR-15 Series meets BS EN/EN55032 Class B emission requirements. Final EMC performance should still be verified at the complete equipment level according to the final enclosure, wiring method, grounding design and installation environment.

For system-level safety and reliability, the DDR-15 Series integrates multiple protection functions including:

Short circuit protection
Overload protection
Over voltage protection
Input reverse polarity protection
Input under-voltage lockout protection

These protection functions help maintain reliable operation under abnormal electrical conditions, incorrect wiring situations or unstable DC input environments.

As with all industrial DIN rail DC-DC converters, final safety and EMC compliance must be evaluated at the system level. Designers should consider grounding, shielding, cable routing, enclosure design, thermal conditions, operating altitude and insulation coordination according to the final application requirements.

Need more product details before system integration? Continue below to review application guidance, model selection for DDR-15G and DDR-15L series, wiring diagrams, mechanical installation, derating curves, efficiency data, protection functions and DC system design considerations.

FAQ

What is the MEAN WELL DDR-15 Series?

The MEAN WELL DDR-15 Series is a 15W DIN rail DC-DC converter designed for industrial control systems, automation equipment, communication devices and distributed DC power applications. The series provides isolated DC voltage conversion with 9–36Vdc and 18–75Vdc input options, multiple output voltages and an ultra-slim 17.5mm DIN rail design.

What is the difference between DDR-15G and DDR-15L?

The main difference between DDR-15G and DDR-15L is the input voltage range. DDR-15G models support 9–36Vdc input, while DDR-15L models support 18–75Vdc input. Both versions provide isolated DC conversion with 3.3V, 5V, 12V, 15V and 24V output options.

Is the MEAN WELL DDR-15 Series an isolated DC-DC converter?

Yes. The DDR-15 Series provides 4KVdc I/O reinforced isolation between input and output circuits. This helps improve electrical separation, system reliability and protection between different DC voltage domains in industrial applications.

What input voltage range does DDR-15 support?

The DDR-15 Series supports two input voltage ranges:

DDR-15G: 9–36Vdc input
DDR-15L: 18–75Vdc input

These wide input ranges allow integration into different DC systems, including 12V, 24V and 48V industrial DC power architectures.

Does DDR-15 require a minimum load to operate?

No. The DDR-15 Series does not require a minimum output load for normal operation. This feature allows stable operation with low-power industrial controllers, sensors, communication modules and embedded electronic systems.

What output voltage options are available for DDR-15 Series?

The DDR-15 Series provides multiple output voltage options:

3.3Vdc
5Vdc
12Vdc
15Vdc
24Vdc

These models support different industrial control circuits, electronic devices, communication equipment and distributed DC power applications.

Can DDR-15 be installed on a standard DIN rail?

Yes. The DDR-15 Series supports standard TS-35/7.5 and TS-35/15 DIN rail installation. Its 17.5mm ultra-slim width helps save cabinet space in compact industrial control panels.

What applications use DDR-15 DIN rail DC-DC converters?

The DDR-15 Series is commonly used in:

Industrial automation systems
Control cabinets
Semiconductor manufacturing equipment
Communication systems
Wireless network equipment
Embedded electronic systems
Distributed DC power applications

It is suitable when reliable isolated DC voltage conversion is required in space-limited installations.

What protection functions does DDR-15 provide?

The DDR-15 Series includes multiple protection functions:

Short circuit protection
Overload protection
Over voltage protection
Input reverse polarity protection
Input under-voltage lockout

The input reverse polarity protection uses an internal MOSFET design and automatically recovers after the fault condition is removed.

How do I select between DDR-15G-24 and DDR-15L-24?

Select DDR-15G-24 when the DC input voltage is within 9–36Vdc and a 24Vdc output is required. Select DDR-15L-24 when the input voltage system operates between 18–75Vdc, such as 24V or 48V DC industrial systems requiring isolated 24V conversion.

Need more details about DDR-15 Series input voltage range (DDR-15G / DDR-15L), adjustable output voltage, input reverse polarity protection, input under-voltage protection, 4KVdc I/O reinforced isolation and system-level DC-DC converter integration? Check the FAQ section above or review the datasheet for complete electrical, mechanical and protection specifications for industrial control systems, factory automation equipment, semiconductor manufacturing equipment, telecom, datacom, wireless network and distributed DC power applications.

Product Video

Mean Well DC-DC DIN Rail Power Supply DDR-15 Series Unboxing

Mean Well DC-DC DIN Rail Power Supply DDR-15 Series Video Show

DDR-15 Series product videos will be added soon.

Need more details about DDR-15 Series input voltage range (DDR-15G / DDR-15L), DC-DC converter application support, adjustable output voltage, input reverse polarity protection, input under-voltage protection, 4KVdc I/O reinforced isolation and system-level DIN rail power integration? Check the FAQs above or review the datasheet for complete electrical, mechanical and protection specifications for industrial control systems, factory automation equipment, semiconductor manufacturing equipment, telecom, datacom, wireless network and distributed DC power applications.