Mean Well DDRH-120-12 Ultra Wide Input DC-DC Converter, 100.8W 12V - Best Prices in the US

Name: Mean Well DDRH-120-12 Ultra Wide Input DC-DC Converter, 100.8W 12V 8.4A
Brand: Mean Well
SKU: DDRH-120-12
Price: 134.88 USD
Availability: InStock

Overview

DDRH-120-12 is the 12V output model of this series: rated current 8.4A, rated power 100.8W, typical efficiency 88%.

DDRH-120 series is a 250 ~ 1500Vdc high reliable ultra-high input DIN rail type DC-DC converter which can supply stable working voltage for the load. It is suitable to be mounted on TS-35/7.5 or 15 rails. Main features are as following: easy to install DIN rail type, narrow width(63mm) in slim design, -40~+80° C wide range operating temperature, 4KVac high isolation voltage, operation at 5000m altitude, high efficiency, low ripple & noise, complete protections and so on. DDRH-120 is compliant with UL1741 and BS EN/EN61000-6-2 standard regarding immunity for industrial environments. It is suitable for industrial automation, surveillance, telecommunication and can be widely deployed in the applications of new energy generation such as solar power, and windmill power generation, for instances, photovoltaic power systems, high voltage inverting , DC bus centralized application, ESS, charging pile, railway and so forth.

Features

250~ 1500Vdc 6:1 ultra-wide input range
Withstand 1700Vdc surge input for 10 seconds
63mm slim width
4KVac I/O high isolation(Reinforced isolation)
Protections: Short circuit / Overload / Over voltage / Over temperature DC input under voltage / DC input reverse polarity
Fanless design, cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15
-40~+80°C ultra-wide operating temperature (＞+50°C derating)
Over voltage categoryⅡ
Operating altitude up to 5000 meters
DC OK relay contact
DC output voltage adjustable(12~15V, 24~29V, 30~36V, 48~58V)
Conformal coating
3 years warranty

Specifications

DDRH-120-12Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 12V
RATED CURRENT: 8.4A
CURRENT RANGE: 0 ~ 8.4A
RATED POWER: 100.8W
RIPPLE & NOISE (max.)^Note.2: 120mVp-p
VOLTAGE ADJ. RANGE: 12 ~ 15V
VOLTAGE TOLERANCE^Note.3: ±1.5%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.5%
EXTERNAL CAPACITANCE LOAD (Max.): 4000μF

INPUT

VOLTAGE RANGE^Note.4: 250 ~ 1500Vdc
EFFICIENCY (Typ.) 300Vdc: 88%
EFFICIENCY (Typ.) 800Vdc: 87%
EFFICIENCY (Typ.) 1500Vdc: 84%
INRUSH CURRENT (max.): COLD START 300A /1500Vdc 200A/800Vdc 70A/250Vdc
EXTERNAL INPUT FUSE: 4A/1500VDC, required(Please refer to page 4 for more details)

PROTECTION

OVERLOAD: 105 ~ 135% rated output power Protection type : Hiccup mode when output voltage<55%, recovers automatically after condition is removed; Constant current limiting, recovers automatically after fault condition is removed within 55% ~ 100% rated output voltage
OVER VOLTAGE: 16.5 ~ 21V Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER TEMPERATURE: Protection type : Hiccup mode, recovers automatically after fault condition is removed
DC INPUT REVERSE POLARITY: By internal Bridge Diode, no damage, recovers automatically after fault condition removed
DC INPUT UNDER VOLTAGE LOCKOUT: Under voltage protection range:200 ~ 230Vdc , Under voltage release range:230 ~ 245Vdc

FUNCTION

DC OK SIGNAL: Relay contact rating(max.) : 30V / 1A resistive

ENVIRONMENT

WORKING TEMP.: -40 ~ +80℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +80℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: Component: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting clip: Compliance to IEC60068-2-6
OPERATING ALTITUDE^Note.5: 5000m
OVER VOLTAGE CATEGORY: OVCⅡ2000m; According to EN62109-1

SAFETY & EMC

SAFETY STANDARDS: UL1741, CSA C22.2 No.107.1-16 , IEC62109-1, BS EN/EN62109-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P:4KVAC I/P-FG :3.75KVAC O/P-FG :2KVAC O/P-DC OK:0.5KVAC
ISOLATION RESISTANCE: I/P-O/P, 100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032(CISPR32) Class A
Radiated BS EN/EN55032(CISPR32) Class A
EMC IMMUNITY: BS EN/EN55035, BS EN/EN61000-6-2

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact, criteria A
Radiated Susceptibility BS EN/EN61000-4-3 Level 3, 10V, criteria A
EFT/Burest BS EN/EN61000-4-4 Level 3, 2KV, criteria A
Surge BS EN/EN61000-4-5 Level 4, 2KV/Vin+ ~ Vin-, 4KV/Vin ~ FG, criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V, criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A, criteria A

Parameter	Standard	Test Level
Conducted	BS EN/EN55032(CISPR32)	Class A
Radiated	BS EN/EN55032(CISPR32)	Class A

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 2, 4KV contact, criteria A
Radiated Susceptibility	BS EN/EN61000-4-3	Level 3, 10V, criteria A
EFT/Burest	BS EN/EN61000-4-4	Level 3, 2KV, criteria A
Surge	BS EN/EN61000-4-5	Level 4, 2KV/Vin+ ~ Vin-, 4KV/Vin ~ FG, criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V, criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A, criteria A

OTHERS

MTBF: 257.2 Khrs min. MIL-HDBK-217F (25℃); 1596.3 Khrs min. Telcordia TR/SR-332 (Bellcore) (25℃)
DIMENSION: 63*125.2*115mm (W*H*D)
PACKING: 0.845Kg; 12pcs/12.6Kg/1.02CUFT

Test conditions and notes7

1. All parameters NOT specially mentioned are measured at 800Vdc input, rated load and 25℃ of ambient temperature.
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. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Derating may be needed under low input voltage. Please check the derating curve for more details.
5. 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).
6. Installation clearances : 40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended when loaded permanently with full power. In case the adjacent device is a heat source, 15mm clearance is recommended.
7. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets 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 )

Technical drawings

DDRH-120-12 Block Diagram — Block Diagram

DDRH-120-12 Derating Curve — Derating Curve

DDRH-120-12 External FUSE wiring instruction — External FUSE wiring instruction

DDRH-120-12 Installation Instruction — Installation Instruction

Typical applications

Downloads

Datasheet1

DDRH-120-12 datasheetDDRH_120_spec_sheet.pdf · 2026-03-31 edition PDF Download

FAQ

Can the DDRH-120-12 power a 12V industrial control panel drawing around 8A?

Yes, the DDRH-120-12 delivers up to 8.4A at 12V (100.8W), making it suitable for 12V control panel loads up to that current. It mounts on a DIN rail and operates across a 250–1500VDC input range, which suits systems fed from medium-voltage DC bus architectures.

Is the DDRH-120-12 suitable for use in DC microgrid or energy storage systems?

Yes. The DDRH-120-12 accepts a 250–1500VDC input, making it well suited to battery-based DC microgrids and energy storage bus applications where bus voltage may vary widely. An input under-voltage lockout (200–230VDC) protects against a sagging bus, and the output is adjustable from 12V to 15V to accommodate downstream equipment requirements.

Can I use this converter to supply 12V instrumentation in a solar or wind power cabinet?

The DDRH-120-12 is designed for high-voltage DC input environments such as solar string and wind turbine DC buses, accepting 250–1500VDC. It provides a regulated 12V/8.4A output for instrumentation, PLCs, or HMIs mounted in the same cabinet.

What temperature range can the DDRH-120-12 operate in?

The DDRH-120-12 is rated for -40°C to +80°C operation, with output derating at higher ambient temperatures (see the derating curve). This wide range makes it suitable for outdoor cabinets or industrial environments subject to cold-weather extremes without additional heating.

How wide is the DDRH-120-12, and will it fit in a standard DIN rail enclosure?

The DDRH-120-12 is 63mm wide — a slim DIN rail form factor. Its full dimensions are 63 × 125.2 × 115 mm and it weighs 0.845 kg; it mounts on TS35/7.5 or TS35/15 DIN rail.

What output voltage models are available in the DDRH-120 series?

The DDRH-120 series includes four output voltage options: 12V/8.4A (DDRH-120-12, 100.8W), 24V/5A (DDRH-120-24, 120W), 32V/3.75A (DDRH-120-32, 120W), and 48V/2.5A (DDRH-120-48, 120W). All share the same 63mm-wide DIN rail housing and 250–1500VDC input range.

Can the output voltage of the DDRH-120-12 be adjusted above 12V?

Yes, the output voltage is adjustable from 12V up to 15V via the trim function. This allows fine-tuning to match the forward voltage requirements of downstream 12V loads or to compensate for cable drop.

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Mean Well DDRH-120-12 Ultra Wide Input DC-DC Converter, 100.8W 12V 8.4A

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

FUNCTION

ENVIRONMENT

SAFETY & EMC

OTHERS

Technical drawings

Typical applications

Downloads

Datasheet1

FAQ

Payment & Security

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Mean Well DDRH-120-12 Ultra Wide Input DC-DC Converter, 100.8W 12V 8.4A

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Typical applications

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