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Mean Well DDRH-240-32 Ultra Wide Input DC-DC Converter, 240W 32V 7.5A

Name: Mean Well DDRH-240-32 Ultra Wide Input DC-DC Converter, 240W 32V 7.5A
Brand: Mean Well
SKU: DDRH-240-32
Price: 194.04 USD
Availability: InStock

250~1500VDC 6:1 ultra-wide input rangewithstand 1700Vdc surge input for 10 seconds85.5mm slim widthDC output voltage adjustable 30~36V

SKU DDRH-240-32

$194.04 USD

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DDRH-240-32

DDRH-120-32 120W 32V Backorder$134.88 USD

DDRH-240-32 240W 32V Backorder$194.04 USD

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Overview

DDRH-240-32 is the 32V output model of this series: rated current 7.5A, rated power 240W, typical efficiency 87%.

DDRH-240 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(85.5mm) in slim design, -40~+80°C wide range operating temperature, 4KVac high isolation voltage, current sharing up to 960W(3+1), operation at 5000m altitude, high efficiency, low ripple & noise, complete protections and so on. DDRH-240 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, 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
85.5mm 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)
Current sharing up to 960W(3+1)
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-240-32Specifications from the official datasheet (2026-03-31 edition)

OUTPUT

DC VOLTAGE: 32V
RATED CURRENT: 7.5A
CURRENT RANGE: 0 ~ 7.5A
RATED POWER: 240W
RIPPLE & NOISE (max.)^Note.2: 240mVp-p
VOLTAGE ADJ. RANGE: 30 ~ 36V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±0.5%
EXTERNAL CAPACITANCE LOAD (Max.): 4000μF

INPUT

VOLTAGE RANGE^Note.4: 250 ~ 1500Vdc
EFFICIENCY (Typ.) 300Vdc: 87%
EFFICIENCY (Typ.) 800Vdc: 90%
EFFICIENCY (Typ.) 1500Vdc: 86%
INRUSH CURRENT (max.): COLD START 500A /1500Vdc 300A/800Vdc 120A/300Vdc
EXTERNAL INPUT FUSE: 4A/1500VDC, required(Please refer to page 5 for more details)
INTERNAL INPUT FUSE: 2A/1500VDC (optional)

PROTECTION

OVERLOAD: 105 ~ 135% rated output power Protection type : Hiccup mode when output voltage<35%, recovers automatically after condition is removed; Constant current limiting, recovers automatically after fault condition is removed within 35% ~ 100% rated output voltage
OVER VOLTAGE: 40 ~ 48V Protection type : Shut down o/p voltage, re-power on to recover
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
CURRENT SHARING: Up to 960W(3+1 units).Please refer to the Function Manual

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: 214.2Khrs min. MIL-HDBK-217F (25℃); 1391.8Khrs min. Telcordia TR/SR-332 (Bellcore) (25℃)
DIMENSION: 85.5*125.2*129.2mm (W*H*D)
PACKING: 0.96Kg; 8pcs/10.3Kg/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-240-32 Block Diagram — Block Diagram

DDRH-240-32 Derating Curve — Derating Curve

DDRH-240-32 Function Manual — Function Manual

DDRH-240-32 Function Manual (2) — Function Manual (2)

DDRH-240-32 Mechanical Specification — Mechanical Specification

DDRH-240-32 External FUSE wiring instruction — External FUSE wiring instruction

DDRH-240-32 Installation Instruction — Installation Instruction

Typical applications

Downloads

Datasheet1

DDRH-240-32 datasheetDDRH_240_spec_sheet.pdf · 2026-03-31 edition PDF Download

FAQ

What types of industrial loads are compatible with the DDRH-240-32's 32V output?

The DDRH-240-32 is suited for 32V DC loads such as certain brushless DC motors, specialized industrial actuators, and telecom or datacom equipment that operates at 32V. At 240W and 7.5A, it can handle mid-range power loads in these categories. The output is adjustable from 30V to 36V, adding flexibility for loads slightly below or above 32V.

Can the DDRH-240-32 accept power from a photovoltaic or high-voltage DC battery bus?

Yes. The DDRH-240-32 accepts 250–1500VDC input with a 6:1 ultra-wide range and is certified to UL1741 and IEC62109-1. This makes it compatible with high-voltage photovoltaic string outputs and DC battery buses used in renewable energy and energy storage systems; an external 4A/1500VDC input fuse is required.

Is the DDRH-240-32 appropriate for embedded systems or industrial computing that requires 32V supply?

Yes. For industrial embedded platforms or custom hardware designed around a 32V rail, the DDRH-240-32 provides 240W at 7.5A in a DIN rail-mount package 85.5mm wide. Its -40°C to +80°C working range (with derating per the derating curve) also suits enclosed cabinet deployments; recommended clearances are 40mm top, 20mm bottom and 5mm on each side.

Can the DDRH-240-32 operate in extreme-temperature industrial environments?

Yes. The DDRH-240-32 is rated for -40°C to +80°C operation, with output derating at higher ambient temperatures per the derating curve, making it appropriate for applications ranging from sub-zero outdoor equipment enclosures to high-ambient factory floors. The unit should be housed in an IP-rated enclosure when installed in environments with moisture or particulate exposure.

How do the four 240W DDRH models compare across output voltages?

The 240W DDRH models are: DDRH-240-12 (200.4W, 12V, 16.7A), DDRH-240-24 (240W, 24V, 10A), DDRH-240-32 (240W, 32V, 7.5A), and DDRH-240-48 (240W, 48V, 5A). All use the same 250–1500VDC input range and 85.5mm width, and carry UL1741, IEC62109-1 and EAC approvals. Selection is based on the output voltage required by the application.

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