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Mean Well RSD-100B-24 DC-DC Converter - 100.8W - 16.8~31.2V in 24V out 4.2A

miniature sizeeconomicalwithstand 5G vibration and 70°C operation

SKU RSD-100B-24

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Overview

RSD-100B-24 is the 24V output model of this series: rated current 4.2A, rated power 100.8W, typical efficiency 89%.

Features

Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
2:1 wide input range
Protections: Short circuit / Overload / Over voltage / Input reverse polarity
4000VDC I/O isolation
Cooling by free air convection
Half encapsulated
Built-in constant current limiting circuit
1U low profile 36mm
All using 105℃ long life electrolytic capacitors
LED indicator for power on
100% full load burn-in test
3 years warranty

Specifications

RSD-100B-24Specifications from the official datasheet (2025-07-18 edition)

OUTPUT

DC VOLTAGE: 24V
RATED CURRENT: 4.2A
CURRENT RANGE: 0 ~ 4.2A
RATED POWER: 100.8W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
VOLTAGE TOLERANCE^Note.3: ±2.0%
LINE REGULATION: ±0.2%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME: 800ms, 50ms at full load
HOLD UP TIME (Typ.): Please refer to page 3 Hold up Time( Load de-rating curve )

INPUT

VOLTAGE RANGE CONTINUOUS: 16.8 ~ 31.2VDC
VOLTAGE RANGE 1 SEC.: 14.4 ~ 33.6VDC
EFFICIENCY (Typ.): 89%
DC CURRENT (Typ.): 4.8A/24V
INRUSH CURRENT (Typ.): 30A/24VDC
INTERRUPTION OF VOLTAGE SUPPLY: EN50155:2021-Comply with S1 level

PROTECTION

OVERLOAD: 105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE: 27.6 ~ 32.4V Protection type : Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.: -40 ~ +55℃ (no derating) ; +70℃ @ 60% load by free air convection ; +70℃ no derating with external base plate, TX class compliance
WORKING HUMIDITY: 5 ~ 95% RH non-condensing
STORAGE TEMP.: -40 ~ +85℃
TEMP. COEFFICIENT: ± 0.03%/℃ (0 ~ 50℃ )
VIBRATION: 10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes ; Mounting : compliance to IEC61373
OPERATING ALTITUDE: 5000 meters

SAFETY & EMC (Note 5)

SAFETY STANDARDS: IEC 62368-1, UL 62368-1, AS/NZS 62368-1, EAC TP TC 004 approved, Design refer to BS EN/EN62368-1
WITHSTAND VOLTAGE: I/P-O/P:4KVDC I/P-FG:2.5KVDC O/P-FG:2.5KVDC
ISOLATION RESISTANCE: I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Compliance to BS EN/EN55032 (CISPR32) Conduction Emission: Class A, Radiation Emission: Class B, EAC TP TC 020
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8, BS EN/EN55035, light industry level, EAC TP TC 020
RAILWAY STANDARD: BS EN/EN50155 / IEC60571 including IEC61373 for shock & vibration, BS EN/EN50121-3-2 for EMC ; BS EN/EN45545-2 for fire protection

OTHERS

MTBF: 2446.2K hrs min. Telcordia SR-332 (Bellcore) ; 254.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 161*68*36mm (L*W*H)
PACKING: 0.563Kg; 24pcs/14.5Kg/0.91CUFT

Test conditions and notes6

1. All parameters NOT specially mentioned are measured at 24,48,110VDC 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. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Strongly recommended that external output capacitance should not exceed 5000uF. (Only for: RSD-100-5 / -12)
5. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. 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 https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
6. 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).

Technical drawings

RSD-100B-24 Mechanical Specification — Mechanical Specification

RSD-100B-24 Block Diagram — Block Diagram

RSD-100B-24 Input Under-Voltage Protection — Input Under-Voltage Protection

RSD-100B-24 Efficiency vs Load & Vin Curve — Efficiency vs Load & Vin Curve

RSD-100B-24 Overload Protection — Overload Protection

RSD-100B-24 Immunity to Environmental Conditions — Immunity to Environmental Conditions

Downloads

Certificates1

EMC Certificate(RSD-100)(EN) PDF Download

Test reports1

Test Report(RSD-100B-24)(EN) PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the RSD-100B-24 to derive a regulated 24V DC rail from a 24V battery or DC source?

Yes, this model accepts a 16.8~31.2VDC input range and delivers a regulated 24V DC output. It is rated for 4.2A and 100.8W, so it fits moderate-power 24V loads in battery-backed or DC-bus systems.

Is the RSD-100B-24 a fit for PLCs, sensors, or industrial controls that require 24V?

It can be suitable when the connected equipment specifically requires a constant 24V rail and total demand stays within 4.2A and 100.8W. That makes it relevant for many automation, control, and instrumentation applications built around 24V DC.

Would this converter work in mobile equipment or transport platforms that distribute 24V to subsystems?

Yes, provided the input source stays within 16.8~31.2VDC and the downstream 24V load remains within 100.8W. Its -40°C to +55°C full-load rating (up to +70°C with derating or an external base plate) and 5G vibration rating with IEC61373 compliance support use in more demanding mobile environments.

Can the RSD-100B-24 be used for 24V communications or embedded equipment inside an enclosure?

It is suitable for enclosed 24V DC systems that need a regulated supply from a 16.8~31.2VDC input source. The converter provides up to 4.2A at 24V and has compact dimensions of 161.0 x 68.0 x 36.0 mm.

Is the RSD-100B-24 suitable for outdoor cabinets or exposed installations?

It operates from -40°C to +55°C without derating, and up to +70°C at 60% load by free air convection or at full load when mounted on an external base plate (EN50155 TX class). However, there is no listed IP rating, so it should be housed in a suitable enclosure rather than used directly in exposed outdoor or wet conditions.

What is the difference between the RSD-100B-24 and the other RSD-100B models?

The RSD-100B family includes RSD-100B-5 at 100W, 5V, 20A; RSD-100B-12 at 100.8W, 12V, 8.4A; and RSD-100B-24 at 100.8W, 24V, 4.2A. The main difference is the output voltage, with current adjusted accordingly across the three versions.

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Mean Well RSD-100B-24 DC-DC Converter - 100.8W - 16.8~31.2V in 24V out 4.2A

Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note 5)

OTHERS

Technical drawings

Downloads

Certificates1

Test reports1

Catalogues2

FAQ

Payment & Security

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Mean Well RSD-100B-24 DC-DC Converter - 100.8W - 16.8~31.2V in 24V out 4.2A

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