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Mean Well DDR-240C-48 DC-DC Converter - 240W - 33.6~67.2V in 48V out 5A

Name: Mean Well DDR-240C-48 DC-DC Converter - 240W - 33.6~67.2V in 48V out 5A
Brand: Mean Well
SKU: DDR-240C-48
Price: 97.43 USD
Availability: InStock

2:1 or 4:1 wide input rangefanless design4KVdc I/O isolationultra slim dimensions

SKU DDR-240C-48

$97.43 USD

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DDR-240C-48

DDR-120C-12 12V out 120W In stock $68.88 USD

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DDR-120C-24 24V out 120W In stock $61.10 USD

DDR-240C-24 24V out 240W In stock $97.43 USD

DDR-480C-24 24V out 480W Low stock $184.66 USD

DDR-120C-48 48V out 120W Low stock $68.88 USD

DDR-240C-48 48V out 240W In stock $97.43 USD

DDR-480C-48 48V out 480W Low stock $184.66 USD

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Overview

DDR-240C-48 is the 48V output model of this series: rated current 5A, rated power 240W, typical efficiency 92%.

DDR-240 series is a 240W DIN Rail type DC-DC converter with main features including DIN rail-type easy installation, ultra slim width (40mm), 2:1 wide input voltage, fanless design, -40~+70℃ wide operating temperature, 4KVdc I/O isolation, 150% peak load, current sharing, DC OK, adjustable output voltage and full protective functions. This series of models has various input options: 16.8~33.6V / 33.6~67.2V / 67.2~154V and two output options: 24V / 48V and can be used for industrial & railway control, security control, communication system and other fields. Suitable applications include to DC buck/boost regulator, increasing system insulation level and voltage drop compensation along cable...etc.

Features

Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
Width onlly 40mm
2:1 wide input range
-40~+70℃ wide working temperature
150% peak load capability
Current sharing up to 960W(3+1)
DC output adjustable
Cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15
Protections: Short circuit / Overload / Over voltage / Over temperature / Input reverse polarity/ Input under voltage protection
4KVdc I/O isolation(Reinforced isolation)
DC OK relay contact
Remote ON-OFF control
Conformal coating
3 years warranty

Specifications

DDR-240C-48Specifications from the official datasheet (2026-09-10 edition)

OUTPUT

DC VOLTAGE: 48V
RATED CURRENT: 5A
CURRENT RANGE: 0 ~ 5A
RATED POWER: 240W
PEAK CURRENT: 7.5A
PEAK POWER^Note.5: 360W (3sec.)
RIPPLE & NOISE (max.)^Note.2: 100mVp-p
VOLTAGE ADJ. RANGE: 48 ~ 56V
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 500ms, 60ms
HOLD UP TIME (Typ.): Please refer to page 6 Hold up Time( Load de-rating curve )

INPUT

VOLTAGE RANGE CONTINUOUS^Note.4: 33.6 ~ 67.2Vdc
VOLTAGE RANGE 100ms^Note.4: 28.8 ~33.6Vdc
EFFICIENCY (Typ.): 92%
DC CURRENT (Typ.): 5.6A @48Vdc
INRUSH CURRENT (Typ.): 30A
INTERRUPTION OF VOLTAGE SUPPLY: EN50155:2021-Comply with S1 level

PROTECTION

OVERLOAD^Note.5: Normally works within 150% rated output power for more than 3 seconds and then constant current protection 105~135% rated output power with auto-recovery
OVER VOLTAGE: 57.6 ~ 65V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE: Shut down o/p voltage, re-power on to recover
UNDER VOLTAGE LOCKOUT: 48Vin (C - type) :Power ON≥33.6V , OFF≤33V

FUNCTION

DC OK REALY CONTACT RATINGS (max.): 30Vdc/1A resistive load
CURRENT SHARING: Up to 960W (3+1 units). Please refer to the Function Manual
REMOTE ON-OFF CONTROL: Please refer to the Function Manual

ENVIRONMENT

WORKING TEMP.: -40 ~ +70℃ (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 ~ 55℃)
VIBRATION: Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373
OPERATING ALTITUDE^Note.7: 5000 meters

SAFETY & EMC

SAFETY STANDARDS: IEC 62368-1, UL 62368-1, EAC TP TC 004, AS/NZS 62368.1 approved
WITHSTAND VOLTAGE: I/P-O/P:4KVdc I/P-FG:2.5KVdc O/P-FG:0.71KVdc
ISOLATION RESISTANCE: I/P-O/P, I/P-FG, O/P-FG:>100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 Class B
Radiated BS EN/EN55032 Class B
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035 , BS EN/EN61000-6-2(BS EN/EN50082-2)

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated BS EN/EN61000-4-3 Level 3, 10V/m; criteria A
EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV; criteria A
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V; criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m; criteria A
RAILWAY STANDARD: Compliance to BS EN/EN45545-2 for fire protection ; Meet BS EN/EN50155 / IEC60571 including IEC61373 for shock & vibration, BS EN/EN50121-3-2 for EMC

Parameter	Standard	Test Level
Conducted	BS EN/EN55032	Class B
Radiated	BS EN/EN55032	Class B
Voltage Flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 3, 6KV contact; criteria A
Radiated	BS EN/EN61000-4-3	Level 3, 10V/m; criteria A
EFT / Burst	BS EN/EN61000-4-4	Level 3, 2KV; criteria A
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-FG ;criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V; criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A/m; criteria A

OTHERS

MTBF: 1415.6K hrs min. Telcordia SR-332 (Bellcore) ; 189.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 40*125.2*113.5mm (W*H*D)
PACKING: 0.76Kg;20psc/16.2Kg/1.0CUFT

Test conditions and notes7

1. All parameters NOT specially mentioned are measured at normal input (B:24Vdc , C:48Vdc , D:110Vdc ) , 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. 3 seconds max., please refer to peak loading curves.
6. 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 )
7. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than2000m(6500ft).

Technical drawings

DDR-240C-48 Block Diagram — Block Diagram

DDR-240C-48 Derating Curve — Derating Curve

DDR-240C-48 Function Manual — Function Manual

DDR-240C-48 Input Under-Voltage Protection — Input Under-Voltage Protection

DDR-240C-48 Efficiency vs Load & Vin Curve — Efficiency vs Load & Vin Curve

DDR-240C-48 D D R - 2 4 0 series — D D R - 2 4 0 series

DDR-240C-48 Mechanical Specification — Mechanical Specification

Typical applications

Downloads

Certificates3

CE Certificate(DDR-240)(EN) PDF Download

UL Certificate(DDR-240)(EN) PDF Download

EMC Certificate(DDR-240)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the DDR-240C-48 to step up or regulate a 48V battery bank to a stable 48V rail?

The DDR-240C-48 accepts 33.6-67.2V DC input and outputs a regulated 48V at up to 5A (240W). If your battery voltage sags below 48V during discharge but stays above 33.6V, this converter will keep a stable 48V output for loads like telecom equipment or PoE switches; note that output derating is needed at low input voltage (see the datasheet's output derating vs. input voltage curve).

Is the DDR-240C-48 suitable for powering 48V PoE network switches from a DC bus?

Yes. At 240W and 48V/5A output, the DDR-240C-48 can supply a midspan PoE injector or 48V PoE switch from any DC bus between 33.6V and 67.2V. The 4KVdc I/O isolation helps protect network equipment from noise and transients on the primary DC bus.

Can the DDR-240C-48 convert a 60V DC solar charge controller output to 48V for battery charging equipment?

Yes. A 60V DC source falls within the 33.6-67.2V input range. The DDR-240C-48 will regulate this to a stable 48V at up to 5A, which can feed battery management systems or charge controllers that expect a 48V nominal input in off-grid or hybrid solar installations.

Will the DDR-240C-48 work in a sealed industrial enclosure without forced airflow?

The DDR-240C-48 is rated for an operating temperature of -40°C to +70°C, with output derating at higher ambient temperatures per the datasheet's derating curve. It can be installed inside sealed NEMA-rated or IP-rated enclosures, provided the enclosure can dissipate the heat generated and the internal ambient stays within the rated range for your load.

Can I use the DDR-240C-48 to power 48V DC motors or actuators in a factory automation panel?

Yes. The DDR-240C-48 delivers 48V at 5A (240W) from a DC bus in the 33.6-67.2V range, which suits small 48V motors, solenoid banks, and linear actuators. Its DIN rail mounting integrates directly into standard industrial control panels alongside PLCs and terminal blocks.

What are the differences between the DDR-240B-48, DDR-240C-48, and DDR-240D-48?

All three deliver 240W at 48V/5A output and share the same physical dimensions (40 x 125.2 x 113.5 mm). They differ in input voltage range: the DDR-240B-48 takes 16.8-33.6V DC, the DDR-240C-48 takes 33.6-67.2V DC, and the DDR-240D-48 takes 67.2-154V DC. Choose based on the voltage of your source DC bus.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well DDR-240C-24 DC-DC Converter - 240W - 33.6~67.2V in 24V out 10A	240W	24V	10A	IP20	$97.43	View

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