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Mean Well DDRH-30-48ST Ultra Wide Input DC-DC Converter, 30W 48V, Screw Terminal Type 625mA

Name: Mean Well DDRH-30-48ST Ultra Wide Input DC-DC Converter, 30W 48V, Screw Terminal Type 625mA
Brand: Mean Well
SKU: DDRH-30-48ST
Price: 93.95 USD
Availability: InStock

$93.95 USD

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Model

30W 48V Din 30W 48V PCB 30W 48V Screw 45W 48V Din 45W 48V PCB 45W 48V Screw 60W 48V 120W 48V 240W 48V

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Overview

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

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

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

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

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

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

DDRH-30-48ST DDRH-30-xxST — DDRH-30-xxST

DDRH-30-48ST DDRH-30-xxDR — DDRH-30-xxDR

Typical applications

Downloads

Datasheet1

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

FAQ

Can the DDRH-30-48ST supply 48 V power to industrial Ethernet switches or wireless access points in a panel with a high-voltage DC bus?

Yes. The DDRH-30-48ST provides 48 V at 0.625 A (30 W), which covers small industrial Ethernet switches and wireless access points. Its screw terminal connections and 150–1500 VDC input allow direct wiring from a high-voltage DC distribution rail in industrial control panels.

Is this converter suitable for providing 48 V auxiliary power in rail or transit control cabinets?

The DDRH-30-48ST's 150–1500 VDC input range accommodates many high-voltage DC buses used in transit systems. Its –40°C to +80°C operating range (with load derating at higher ambient temperatures per the derating curve) and vibration rating per MIL-STD-810F support use in control cabinets, but the sheet lists no railway-specific standards, so confirm rail compliance requirements separately.

Can the DDRH-30-48ST be used in outdoor enclosures or harsh environments without active cooling?

It can be used inside a protective enclosure. The –40°C to +80°C operating range (with load derating at higher ambient temperatures per the derating curve) covers wide ambient swings in substations, wind farms, and remote monitoring installations, but no IP rating is given and humidity must stay within 20–90% RH non-condensing, so the enclosure must provide environmental protection.

Is the DDRH-30-48ST a good choice for powering 48 V load cells or precision measurement instruments in industrial weighing systems fed from a high-voltage DC rail?

At 48 V / 0.625 A (30 W), the DDRH-30-48ST can supply 48 V instruments and measurement devices with moderate power draws. The screw terminals provide robust wiring connections suitable for industrial measurement environments, and the wide input range supports integration into high-voltage DC-powered weighing system panels.

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

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

What certifications and warranty coverage apply to the DDRH-30-48ST?

The DDRH-30-48ST 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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