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Mean Well DDRH-15-24ST Ultra Wide Input DC-DC Converter, 15W 24V, Screw Terminal Type 625mA

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

SKU DDRH-15-24ST

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Overview

DDRH-15-24ST is the 24V output model of this series: rated power 5Vo: 10W 12Vo ~ 24Vo: 15W, typical efficiency 88%.

DDRH-15 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-15 is designed to meet UL1741 and 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-15-24STSpecifications from the official datasheet (2024-10-18 edition)

MODEL SELECTION TABLE

INPUT VOLTAGE (RANGE): Nominal 800Vdc (150~1500Vdc)
INPUT CURRENT NO LOAD: 0.2mA
INPUT CURRENT FULL LOAD: 30mA
OUTPUT VOLTAGE: 24V
OUTPUT CURRENT: 0.625A
EFFICIENCY (Typ.): 88%
CAPACITOR LOAD (MAX.): 625μF

INPUT

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

VOLTAGE ACCURACY: ±2.0%
RATED POWER: 5Vo: 10W 12Vo ~ 24Vo: 15W
RIPPLE & NOISE^Note.2: 5 ~ 15Vo: 100mVp-p 24Vo: 150mVp-p
LINE REGULATION: ±1%
LOAD REGULATION: ±1% (10% Load to Full Load)
SWITCHING FREQUENCY (Typ.): 25 ~ 75.6KHz
HOLD UP TIME: 16ms min. @Vin=800Vdc
SETUP TIME: 1s 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: 147Vdc
DC INPUT UNDER VOLTAGE LOCKOUT Shutdown voltage: 137Vdc

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% / ℃ (0 ~ 50℃)
VIBRATION: Component: 10 ~ 500Hz, 3G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting clip: Compliance to IEC60068-2-6
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: 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: 388Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): P Type: 76.2*50.8*25mm, ST Type: 122.3*57.3*32mm, DR Type: 122.3*57.3*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 : 170g ; 6pcs/Tray, 18pcs/per carton ST Type : 210g ; 6pcs/Tray, 18pcs/per carton DR Type : 215g ; 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-15-24ST ‧Tolerance: x.x±0.7mm (x.x±0.0275") — ‧Tolerance: x.x±0.7mm (x.x±0.0275")

DDRH-15-24ST ‧Tolerance: x.x±0.7mm (x.x±0.0275") (2) — ‧Tolerance: x.x±0.7mm (x.x±0.0275") (2)

DDRH-15-24ST DDRH-15-xxST (Screw Terminal Type) — DDRH-15-xxST (Screw Terminal Type)

DDRH-15-24ST DDRH-15-xxDR (DIN Rail Type) — DDRH-15-xxDR (DIN Rail Type)

DDRH-15-24ST Installation Instruction(DDRH-15-xxDR only) — Installation Instruction(DDRH-15-xxDR only)

DDRH-15-24ST External Fuse Wiring Instruction — External Fuse Wiring Instruction

DDRH-15-24ST DDRH-15-xxST — DDRH-15-xxST

DDRH-15-24ST DDRH-15-xxDR — DDRH-15-xxDR

Typical applications

Downloads

Datasheet1

DDRH-15-24ST datasheetDDRH_15_spec_sheet.pdf · 2024-10-18 edition PDF Download

FAQ

Can the DDRH-15-24ST supply 24V control power to a relay output module or safety relay in an industrial panel wired from a high-voltage DC bus?

Yes. The DDRH-15-24ST provides a stable 24V/0.625A (15W) output from a 150–1500VDC input through screw terminal connections, making it practical to wire into industrial panels where safety relays or relay output modules need a 24VDC supply derived from a high-voltage DC bus.

Is the DDRH-15-24ST suitable for use in rail vehicles or heavy equipment where wide input voltage variation is expected?

The DDRH-15-24ST's 10:1 ultra-wide input range (150–1500VDC) and -40°C to +80°C operating temperature (with derating per the curve) handle widely varying high-voltage DC supplies and wide ambient conditions. The components are vibration-tested at 10–500Hz, 3G along X, Y and Z axes; the sheet lists no railway-specific standard, so verify those requirements for rail vehicles.

Can this converter power a 24V wireless I/O transmitter or remote monitoring node in a high-voltage DC power system?

Yes. The DDRH-15-24ST can power 24V wireless I/O nodes, remote monitoring transmitters, or data acquisition modules at up to 0.625A. The screw terminal connections simplify field wiring in remote panel installations, and the wide input range accommodates variable high-voltage DC source conditions.

How does the DDRH-15-24ST behave in environments with extreme ambient temperature swings, such as outdoor utility substations?

The DDRH-15-24ST is rated for -40°C to +80°C operation (load derating at high ambient per the derating curve) with a fanless design and 20–90% RH non-condensing humidity. This lets it handle the temperature extremes seen in utility substation panels through seasonal and diurnal cycles. No IP rating is specified, so the unit must be installed inside a weatherproof enclosure.

What is the difference between the DDRH-15-24ST, DDRH-15-24DR, and DDRH-15-24P?

All three deliver 24V/0.625A/15W from a 150–1500VDC input. The DDRH-15-24ST (screw terminal, 122.3 × 57.3 × 32.0 mm, 0.21 kg) is wired via screw terminals without DIN rail clips; the DDRH-15-24DR (DIN rail, 122.3 × 57.3 × 43.5 mm, 0.215 kg) snaps onto a DIN rail; and the DDRH-15-24P (PCB mount, 76.2 × 50.8 × 25.0 mm, 0.17 kg) mounts directly on a PCB. The screw terminal version is preferred when DIN rail is unavailable but direct wire connections are needed.

Does the DDRH-15-24ST meet certification requirements for European industrial installations?

The DDRH-15-24ST is approved to IEC62109-1 (LVD) and EAC TP TC 004, and meets BS EN/EN55032 Class A emissions (with external components) and BS EN/EN55035 immunity. As a component, the final equipment must be re-confirmed to meet EMC directives.

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Model	Power	Voltage	Current	IP Rating
Mean Well DDRH-15-24DR Ultra Wide Input DC-DC Converter, 15W 24V, Din Rail Type 625mA	15W	24V	0.625A	IP20	View
Mean Well DDRH-15-15ST Ultra Wide Input DC-DC Converter, 15W 15V, Screw Terminal Type 1A	15W	15V	1A	IP20	View
Mean Well DDRH-15-15DR Ultra Wide Input DC-DC Converter, 15W 15V, Din Rail Type 1A	15W	15V	1A	IP20	View
Mean Well DDRH-15-12ST Ultra Wide Input DC-DC Converter, 15W 12V, Screw Terminal Type 1.25A	15W	12V	1.25A	IP20	View
Mean Well DDRH-15-12DR Ultra Wide Input DC-DC Converter, 15W 12V, Din Rail Type 1.25A	15W	12V	1.25A	IP20	View
Mean Well DDRH-15-05ST Ultra Wide Input DC-DC Converter, 10W 5V, Screw Terminal Type 2A	10W	5V	2A	IP20	View
Mean Well DDRH-15-05DR Ultra Wide Input DC-DC Converter, 10W 5V, Din Rail Type 2A	10W	5V	2A	IP20	View
Mean Well DDRH-15-24P Ultra Wide Input DC-DC Converter, 15W 24V, PCB Mounting Type 625mA	15W	24V	0.625A	IP20	View
Mean Well DDRH-15-15P Ultra Wide Input DC-DC Converter, 15W 15V, PCB Mounting Type 1A	15W	15V	1A	IP20	View
Mean Well DDRH-15-12P Ultra Wide Input DC-DC Converter, 15W 12V, PCB Mounting Type 1.25A	15W	12V	1.25A	IP20	View
Mean Well DDRH-15-05P Ultra Wide Input DC-DC Converter, 10W 5V, PCB Mounting Type 2A	10W	5V	2A	IP20	View

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