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Mean Well DDRH-45-24DR Ultra Wide Input DC-DC Converter, 45W 24V, Din Rail Type 1.87A

150~1500VDC 10:1 ultra-wide input rangefanless design-40~80°C ultra-wide operating temperature

SKU DDRH-45-24DR

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Overview

DDRH-45-24DR is the 24V output model of this series: rated power 45W, typical efficiency 86%.

DDRH-45 series is a 150 ~ 1500Vdc high reliable ultra-high input DC-DC converter which can supply stable working voltage for the load. Main features are as following: compact size, -40~+80℃ wide range operating temperature, 4KVac high isolation voltage, operation at 5000m altitude, low ripple & noise, complete protections and so on. Futhermore, this series also has DIN Rail type, it is suitable to be mounted on TS-35/7.5 or TS-35/15 rails. DDRH-45 is designed to meet UL1741and IEC62109-1 standard. 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

150~1500Vdc 10:1 ultra-wide input range
4KVac I/O high isolation(Reinforced isolation)
Protections: Short circuit / Overload / Over voltage / DC input under voltage / DC input reverse Polarity
Fanless design, fully encapsulated, cooling by free air convection
Can be installed on DIN rail TS-35/7.5 or 15 (DR-Type)
-40~+80℃ ultra-wide operating temperature (＞+50℃ derating)
Operating altitude up to 5000 meters
3 years warranty

Specifications

DDRH-45-24DRSpecifications from the official datasheet (2024-10-18 edition)

INPUT

INPUT VOLTAGE (RANGE): Nominal 800Vdc (150~1500Vdc)
INPUT CURRENT NO LOAD: 0.2mA
INPUT CURRENT FULL LOAD: 75mA
VOLTAGE RANGE: 150 ~ 1500Vdc
FILTER: Internal capacitor
EXTERNAL INPUT FUSE: 4A/1500Vdc, required (Please refer to page 6 for more details)
INRUSH CURRENT (Typ.): Cold start 150A max. @ Vin=800Vdc

OUTPUT

OUTPUT VOLTAGE: 24V
OUTPUT CURRENT: 1.87A
EFFICIENCY (Typ.): 86%
CAPACITOR LOAD (MAX.): 1870μF
VOLTAGE ACCURACY: ±2.0%
RATED POWER: 45W
RIPPLE & NOISE^Note.2: 12 ~ 24Vo: 100mVp-p 48Vo: 150mVp-p
LINE REGULATION: ±1%
LOAD REGULATION: ±1% (10% Load to Full Load)
SWITCHING FREQUENCY (Typ.): 28 ~ 75.6KHz
HOLD UP TIME: 20ms min. @Vin=800Vdc
SETUP TIME: 2s max. @150~1500Vdc

PROTECTION

SHORT CIRCUIT: Protection type : Hiccup mode, continuous, automatic recovery
OVERLOAD: 110 ~ 300% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 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 Start-up voltage: 132Vdc
DC INPUT UNDER VOLTAGE LOCKOUT Shutdown voltage: 121Vdc

ENVIRONMENT

WORKING TEMP.: -40 ~ +80℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.02% / ℃ (-40℃ ~ 50℃) Typ.
VIBRATION: Meets: MIL.STD-810F Table 514.5C-VⅢ, 15-2000Hz, X,Y,Z axis, 1hr (each axis), total 3hrs
OPERATING ALTITUDE^Note.3: 5000 meters
OVER VOLTAGE CATEGORY: Ⅱ; According to EN62109-1; altitude up to 5000 meters

SAFETY & EMC (Note.4)

SAFETY STANDARDS: UL1741 , CSA C22.2 No.107.1-16 , IEC62109-1 (LVD), EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P:4KVac
ISOLATION RESISTANCE: I/P-O/P, 100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 Class A (with external components)
Radiated BS EN/EN55032 Class A (with external components)
EMC IMMUNITY: BS EN/EN55035

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/Bursts BS EN/EN61000-4-4 Level 2, 0.5KV, criteria A
Surge BS EN/EN61000-4-5 Level 4, 2KV/Vin+ ~ Vin-, criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V, criteria A

Parameter	Standard	Test Level
Conducted	BS EN/EN55032	Class A (with external components)
Radiated	BS EN/EN55032	Class A (with external components)

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/Bursts	BS EN/EN61000-4-4	Level 2, 0.5KV, criteria A
Surge	BS EN/EN61000-4-5	Level 4, 2KV/Vin+ ~ Vin-, criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V, criteria A

OTHERS

MTBF: 316Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): P Type: 89*63.5*25mm, ST Type: 135*70*32mm, DR Type: 135*70*43.5mm
CASE MATERIAL: Non-conductive black plastic (UL 94V-0 rated)
POTTING MATERIAL: UL 94V-0
PIN MATERIAL: Base: copper, Plating: Matte Tin
PACKING: P Type : 240g ; 6pcs/Tray, 18pcs/per carton ST Type : 305g ; 6pcs/Tray, 18pcs/per carton DR Type : 310g ; 6pcs/Tray, 18pcs/per carton

Test conditions and notes4

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. 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).
4. 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 http://www.meanwell.com)

Technical drawings

DDRH-45-24DR ‧Tolerance: x.x±0.7mm (x.x±0.0275") — ‧Tolerance: x.x±0.7mm (x.x±0.0275")

DDRH-45-24DR ‧Tolerance: x.x±0.7mm (x.x±0.0275") (2) — ‧Tolerance: x.x±0.7mm (x.x±0.0275") (2)

DDRH-45-24DR DDRH-45-xxST (Screw Terminal Type) — DDRH-45-xxST (Screw Terminal Type)

DDRH-45-24DR DDRH-45-xxDR (DIN Rail Type) — DDRH-45-xxDR (DIN Rail Type)

DDRH-45-24DR Installation Instruction(DDRH-45-xxDR only) — Installation Instruction(DDRH-45-xxDR only)

DDRH-45-24DR External Fuse Wiring Instruction — External Fuse Wiring Instruction

DDRH-45-24DR DDRH-45-xxST — DDRH-45-xxST

DDRH-45-24DR DDRH-45-xxDR — DDRH-45-xxDR

Typical applications

Downloads

Datasheet1

DDRH-45-24DR datasheetDDRH_45_spec_sheet.pdf · 2024-10-18 edition PDF Download

FAQ

Can the DDRH-45-24DR power 24VDC industrial actuators and solenoid valves from a high-voltage DC bus?

Yes. The 24V, 1.87A (45W) output is the standard supply for many pneumatic solenoid valves, linear actuators, and relay coils in industrial automation. The DIN rail form factor and 150–1500VDC input suit direct integration into automation panels fed from a high-voltage bus.

Is this converter suitable for supplying 24V to a Modbus RTU network of field instruments?

At 24V and 1.87A, the DDRH-45-24DR can power a small network of 4–20 mA field transmitters, RTU nodes, and I/O modules. The total load of all connected devices must stay within the 45W rating.

Can the DDRH-45-24DR be used in a battery energy storage system (BESS) to supply 24V control electronics?

The 150–1500VDC input range encompasses typical BESS stack voltages. It can reliably power 24V BMS communication boards, contactors, and protection relays at up to 1.87A while operating across the –40°C to +80°C temperature range.

What temperature range does the DDRH-45-24DR support, and is it suitable for outdoor cabinet installations?

The unit operates from –40°C to +80°C. No IP rating is specified, so outdoor deployment requires an appropriately rated enclosure. The wide temperature range accommodates most geographic climates when properly enclosed.

Does the DDRH-45-24DR require forced ventilation in a tightly packed DIN rail assembly?

The sheet does not specify forced-air cooling or clearance distances. Leave adequate space around the 135×70×43.5 mm unit and keep the cabinet ambient within –40°C to +80°C, observing the derating curve at higher temperatures.

How does the DDRH-45-24DR compare to the DDRH-45-24P and DDRH-45-24ST?

All three provide 45W at 24V, 1.87A with a 150–1500VDC input. The DDRH-45-24DR (135×70×43.5 mm, 0.31 kg) snaps onto a DIN rail. The DDRH-45-24P (89×63.5×25 mm, 0.24 kg) is a PCB-mount module. The DDRH-45-24ST (135×70×32 mm, 0.305 kg) has screw terminals but no DIN clip.

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Model	Power	Voltage	Current	IP Rating
Mean Well DDRH-45-48ST Ultra Wide Input DC-DC Converter, 45W 48V, Screw Terminal Type 938mA	45W	48V	0.938A	IP20	View
Mean Well DDRH-45-48P Ultra Wide Input DC-DC Converter, 45W 48V, PCB Type 938mA	45W	48V	0.938A	IP20	View
Mean Well DDRH-45-48DR Ultra Wide Input DC-DC Converter, 45W 48V, Din Rail Type 938mA	45W	48V	0.938A	IP20	View
Mean Well DDRH-45-24ST Ultra Wide Input DC-DC Converter, 45W 24V, Screw Terminal Type 1.87A	45W	24V	1.87A	IP20	View
Mean Well DDRH-45-24P Ultra Wide Input DC-DC Converter, 45W 24V, PCB Type 1.87A	45W	24V	1.87A	IP20	View
Mean Well DDRH-45-15ST Ultra Wide Input DC-DC Converter, 45W 15V, Screw Terminal Type 3A	45W	15V	3A	IP20	View
Mean Well DDRH-45-15P Ultra Wide Input DC-DC Converter, 45W 15V, PCB Type 3A	45W	15V	3A	IP20	View
Mean Well DDRH-45-15DR Ultra Wide Input DC-DC Converter, 45W 15V, Din Rail Type 3A	45W	15V	3A	IP20	View
Mean Well DDRH-45-12ST Ultra Wide Input DC-DC Converter, 45W 12V, Screw Terminal Type 3.75A	45W	12V	3.75A	IP20	View
Mean Well DDRH-45-12P Ultra Wide Input DC-DC Converter, 45W 12V, PCB Type 3.75A	45W	12V	3.75A	IP20	View
Mean Well DDRH-45-12DR Ultra Wide Input DC-DC Converter, 45W 12V, Din Rail Type 3.75A	45W	12V	3.75A	IP20	View

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