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Mean Well DDR-30G-12 DC-DC Converter - 30W - 9~36V in 12V out 2.5A

2:1 or 4:1 wide input rangefanless design4KVdc I/O isolationultra slim dimensions
SKU DDR-30G-12
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Select model — 13 in this family

DDR-30G-12
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Overview

DDR-30G-12 is the 12V output model of this series: rated current 2.5A, rated power 30W, typical efficiency 86%.

DDR-30 series is a 30W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (35mm), 4:1 ultra wide input voltage, -40~+85℃ wide operating temperature, 4KVdc I/O isolation, adjustable output voltage ( 10%) and full protective functions..etc. This series has two input options: 9~36V /18~75V and various output options: 5V / 12V / 15V / 24V and can be used for industrial control, security control, communication system and other fields. Suitable applications are DC buck/boost regulator, increasing system insulation level and voltage drop compensation along cable...etc.

Features

  • Width only 35mm (2SU)
  • 4:1 ultra wide input range
  • -40~+85℃ wide working temperature
  • No minimum load required
  • DC output adjustable (±10%)
  • Cooling by free air convection
  • Can be installed on DIN rail TS-35/7.5 or 15
  • Protections: Short circuit / Overload / Over voltage / Input reverse polarity / Input under voltage protection
  • 4KVdc I/O isolation(Reinforced isolation)
  • 3 years warranty

Specifications

DDR-30G-12Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
2.5A
CURRENT RANGE
0 ~ 2.5A
RATED POWER
30W
RIPPLE & NOISE (max.)Note.2
75mVp-p
VOLTAGE ADJ. RANGE
9 ~ 13.2V
VOLTAGE TOLERANCENote.3
±2.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±0.5%
SETUP, RISE TIME
120ms, 85ms at full load
HOLD UP TIME (Typ.)
G-type: 7ms@24Vdc input
EXTERNAL CAPACITANCE LOAD (Max.)
2200μF

INPUT

VOLTAGE RANGENote.4
9 ~ 36Vdc
EFFICIENCY (Typ.)
86%
DC CURRENT (Typ.)
1.5A /24Vdc
INRUSH CURRENT (Typ.)
15A /24Vdc

PROTECTION

OVERLOAD
110 ~ 150% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
13.8 ~ 16.2V Protection type : Shut down o/p voltage, re-power on to recover
REVERSE POLARITY
By internal MOSFET, no damage, recovers automatically after fault condition removed
UNDER VOLTAGE LOCKOUT
24Vin (G-type):Power ON≥9V , OFF≤8.5V 48Vin (L-type):Power ON≥18V , OFF≤17V

ENVIRONMENT

WORKING TEMP.
-40 ~ +85℃ (Refer to "Derating Curve")
WORKING HUMIDITY
5 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 5 ~ 95% RH non-condensing
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 60℃ )
VIBRATION
Component:10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC60068-2-6
OPERATING ALTITUDE
5000 meters

SAFETY & EMC

SAFETY STANDARDS
UL/IEC 62368-1 ,AS/NZS 62368.1 approved; Design refer to UL508
WITHSTAND VOLTAGE
I/P-O/P:4KVdc
ISOLATION RESISTANCE
I/P-O/P>100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION
ParameterStandardTest Level
ConductedBS EN/EN55032Class B
RadiatedBS EN/EN55032Class B
Voltage FlickerBS EN/EN61000-3-3-----
EMC IMMUNITYNote 5

BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)

ParameterStandardTest Level
ESDBS EN/EN61000-4-2Level 3, 8KV air; Level 3, 6KV contact; criteria A
RadiatedBS EN/EN61000-4-3Level 3, 10V/m; criteria A
EFT / BurstBS EN/EN61000-4-4Level 3, 2KV; criteria A
SurgeBS EN/EN61000-4-5Level 3, 1KV/Line-Line; criteria A
ConductedBS EN/EN61000-4-6Level 3, 10V; criteria A
Magnetic FieldBS EN/EN61000-4-8Level 4, 30A/m; criteria A

OTHERS

MTBF
2780.3K hrs min. Telcordia SR-332 (Bellcore) ; 483.8K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
35*90*54.5mm (W*H*D)
PACKING
0.12Kg;96pcs/12.5Kg/1.1CUFT
Test conditions and notes6
  1. 1. All parameters NOT specially mentioned are measured at normal input (G:24Vdc, L:48Vdc), rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Derating may be needed under low input voltage. Please check the derating curve for more details.
  5. 5. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  6. 6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

DDR-30G-12 Block Diagram
Block Diagram
DDR-30G-12 Derating Curve
Derating Curve
DDR-30G-12 Mechanical Specification
Mechanical Specification

Typical applications

  • Industrial control system
  • Semiconductor fabrication equipment
  • Factory automation
  • Electro-mechanical
  • Wireless network
  • Telecom or datacom system

Downloads

FAQ

Can I use the DDR-30G-12 to power a 12V sensor network from a 24V battery in an industrial panel?

Yes. The DDR-30G-12 accepts 9-36V DC input and outputs 12V at up to 2.5A (30W), so a 24V battery bank or DC bus is well within its input range. At 30W it can supply several 12V sensors, relays, or indicator lights mounted alongside it on a DIN rail.

Is the DDR-30G-12 suitable for powering a 12V embedded controller in a small automation enclosure?

Yes. With 30W at 12V/2.5A, the DDR-30G-12 can power compact embedded controllers, single-board computers, or data acquisition modules. Its ultra-slim 90.0 x 54.5 x 35.0 mm DIN rail form factor and 0.12 kg weight make it a good fit for space-constrained control cabinets.

Can the DDR-30G-12 convert a 12V or 24V solar panel output to a regulated 12V for monitoring equipment?

Yes, provided the solar source stays within 9-36V DC; a panel whose open-circuit voltage can exceed 36V should not be connected directly. While the input stays in range, the DDR-30G-12 maintains a stable 12V output for data loggers, communication radios, or camera systems drawing up to 2.5A total, though derating may be needed at low input voltage.

Will the DDR-30G-12 operate in a freezing outdoor equipment cabinet?

Yes. The DDR-30G-12 is rated for a working temperature of -40°C to +85°C (with load derating at high ambient per the derating curve) and operating altitudes up to 5000 meters. It suits unheated outdoor enclosures, cold storage environments, or mountaintop installations as long as the enclosure keeps it dry, since humidity is rated 5-95% RH non-condensing.

How does the DDR-30G series compare across its available output voltages?

The DDR-30G series shares the same 9-36V DC input range and compact DIN rail housing. Output options include the DDR-30G-5 (5V/6A, 30W), DDR-30G-12 (12V/2.5A, 30W), DDR-30G-15 (15V/2A, 30W), and DDR-30G-24 (24V/1.25A, 30W). All are 30W rated and have 4KVdc I/O isolation — choose based on the voltage your load requires.

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Mean Well DDR-30G-12 DC-DC Converter - 30W - 9~36V in 12V out 2.5A
Mean Well

Mean Well DDR-30G-12 DC-DC Converter - 30W - 9~36V in 12V out 2.5A

Log in to see price

DDR-30G-12 is the 12V output model of this series: rated current 2.5A, rated power 30W, typical efficiency 86%.

DDR-30 series is a 30W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (35mm), 4:1 ultra wide input voltage, -40~+85℃ wide operating temperature, 4KVdc I/O isolation, adjustable output voltage ( 10%) and full protective functions..etc. This series has two input options: 9~36V /18~75V and various output options: 5V / 12V / 15V / 24V and can be used for industrial control, security control, communication system and other fields. Suitable applications are DC buck/boost regulator, increasing system insulation level and voltage drop compensation along cable...etc.

Features

  • Width only 35mm (2SU)
  • 4:1 ultra wide input range
  • -40~+85℃ wide working temperature
  • No minimum load required
  • DC output adjustable (±10%)
  • Cooling by free air convection
  • Can be installed on DIN rail TS-35/7.5 or 15
  • Protections: Short circuit / Overload / Over voltage / Input reverse polarity / Input under voltage protection
  • 4KVdc I/O isolation(Reinforced isolation)
  • 3 years warranty

Typical applications

  • Industrial control system
  • Semiconductor fabrication equipment
  • Factory automation
  • Electro-mechanical
  • Wireless network
  • Telecom or datacom system

Model

  • 100W - 12V out - 9~18V in
  • 120W - 12V out - 16.8~33.6V in
  • 120W - 12V out - 33.6~67.2V in
  • 120W - 12V out - 67.2~154V in
  • 15W - 12V out - 9~36V in
  • 15W - 12V out - 18~75V in
  • 30W - 12V out - 9~36V in
  • 30W - 12V out - 18~75V in
  • 400.8W - 12V out - 16.8~33.6V in
  • 400.8W - 12V out - 33.6~67.2V in
  • 400.8W - 12V out - 67.2~154V in
  • 60W - 12V out - 9~36V in
  • 60W - 12V out - 18~75V in
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