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Mean Well DDRH-30-48DR Ultra Wide Input DC-DC Converter, 30W 48V, Din Rail Type 625mA

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

SKU DDRH-30-48DR

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Overview

DDRH-30-48DR is the 48V output model of this series: rated power 30W, typical efficiency 91%.

DDRH-30 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-30 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-30-48DRSpecifications 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: 50mA
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: 48V
OUTPUT CURRENT: 0.625A
EFFICIENCY (Typ.): 91%
CAPACITOR LOAD (MAX.): 625μF
VOLTAGE ACCURACY: ±2.0%
RATED POWER: 30W
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: 16ms 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: 144Vdc
DC INPUT UNDER VOLTAGE LOCKOUT Shutdown voltage: 132Vdc

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

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^Note.4: 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/Burest 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/Burest	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: 318Khrs 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-30-48DR ‧Tolerance: x.x±0.7mm (x.x±0.0275") — ‧Tolerance: x.x±0.7mm (x.x±0.0275")

DDRH-30-48DR ‧Tolerance: x.x±0.7mm (x.x±0.0275") (2) — ‧Tolerance: x.x±0.7mm (x.x±0.0275") (2)

DDRH-30-48DR DDRH-30-xxST (Screw Terminal Type) — DDRH-30-xxST (Screw Terminal Type)

DDRH-30-48DR DDRH-30-xxDR (DIN Rail Type) — DDRH-30-xxDR (DIN Rail Type)

DDRH-30-48DR Installation Instruction(DDRH-30-xxDR only) — Installation Instruction(DDRH-30-xxDR only)

DDRH-30-48DR External Fuse Wiring Instruction — External Fuse Wiring Instruction

DDRH-30-48DR DDRH-30-xxST — DDRH-30-xxST

DDRH-30-48DR DDRH-30-xxDR — DDRH-30-xxDR

Typical applications

Downloads

Datasheet1

DDRH-30-48DR datasheetDDRH_30_spec_sheet.pdf · 2024-10-18 edition PDF Download

FAQ

Can the DDRH-30-48DR power 48 V PoE switches or VoIP equipment in industrial Ethernet networks fed from a high-voltage DC bus?

The DDRH-30-48DR provides 48 V at up to 0.625 A (30 W), which can supply small 48 V PoE or VoIP devices in industrial network cabinets. Its 150–1500 VDC input is compatible with high-voltage DC distribution rails common in industrial facilities. Loads above 30 W exceed its rating.

Is this converter suitable for supplying 48 V control power to telecom rectifiers or DC UPS systems with high-voltage string inputs?

Yes. The 150–1500 VDC ultra-wide input of the DDRH-30-48DR covers high-voltage battery strings and DC UPS buses that fall within that range. It can deliver a stable 48 V / 0.625 A auxiliary supply for monitoring boards, alarms, or control circuits in these systems.

Can the DDRH-30-48DR be installed in outdoor telecom huts or roadside cabinets exposed to extreme temperatures?

The DDRH-30-48DR is rated for –40°C to +80°C operation (with load derating at higher ambient temperatures per the derating curve), which covers wide temperature swings in telecom huts and roadside cabinets. No IP rating is given and humidity must stay within 20–90% RH non-condensing, so the cabinet must protect it from moisture and dust.

Is the DDRH-30-48DR appropriate for powering 48 V bus devices in renewable energy systems such as battery management units?

Yes. When the source DC bus falls within 150–1500 VDC, the DDRH-30-48DR can provide a regulated 48 V / 0.625 A output for battery management units, charge controllers, or communication modules in off-grid or grid-tied renewable energy systems.

How does the DIN rail 30 W 48 V model compare to the PCB and screw terminal variants?

All three deliver 30 W at 48 V / 0.625 A from 150–1500 VDC input with –40°C to +80°C range. The DDRH-30-48DR (DIN rail) measures 135.0 × 70.0 × 43.5 mm and weighs 0.31 kg; the DDRH-30-48P (PCB) is 89.0 × 63.5 × 25.0 mm at 0.24 kg; the DDRH-30-48ST (screw terminal) is 135.0 × 70.0 × 32.0 mm at 0.305 kg.

What certifications does the DDRH-30-48DR hold and what is its warranty?

The DDRH-30-48DR is approved to UL1741, CSA C22.2 No.107.1-16, IEC62109-1 (LVD) and EAC TP TC 004. The spec sheet does not state a warranty period.

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Model	Power	Voltage	Current	IP Rating
Mean Well DDRH-30-48ST Ultra Wide Input DC-DC Converter, 30W 48V, Screw Terminal Type 625mA	30W	48V	0.625A	IP20	View
Mean Well DDRH-30-48P Ultra Wide Input DC-DC Converter, 30W 48V, PCB Mounting Type 625mA	30W	48V	0.625A	IP20	View
Mean Well DDRH-30-24ST Ultra Wide Input DC-DC Converter, 30W 24V, Screw Terminal Type 1.25A	30W	24V	1.25A	IP20	View
Mean Well DDRH-30-24P Ultra Wide Input DC-DC Converter, 30W 24V, PCB Mounting Type 1.25A	30W	24V	1.25A	IP20	View
Mean Well DDRH-30-24DR Ultra Wide Input DC-DC Converter, 30W 24V, Din Rail Type 1.25A	30W	24V	1.25A	IP20	View
Mean Well DDRH-30-15ST Ultra Wide Input DC-DC Converter, 30W 15V, Screw Terminal Type 2A	30W	15V	2A	IP20	View
Mean Well DDRH-30-15P Ultra Wide Input DC-DC Converter, 30W 15V, PCB Mounting Type 2A	30W	15V	2A	IP20	View
Mean Well DDRH-30-15DR Ultra Wide Input DC-DC Converter, 30W 15V, Din Rail Type 2A	30W	15V	2A	IP20	View
Mean Well DDRH-30-12ST Ultra Wide Input DC-DC Converter, 30W 12V, Screw Terminal Type 2.5A	30W	12V	2.5A	IP20	View
Mean Well DDRH-30-12P Ultra Wide Input DC-DC Converter, 30W 12V, PCB Mounting Type 2.5A	30W	12V	2.5A	IP20	View
Mean Well DDRH-30-12DR Ultra Wide Input DC-DC Converter, 30W 12V, Din Rail Type 2.5A	30W	12V	2.5A	IP20	View

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