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Mean Well DRC-40B Power Supply 40.02W 27.6V 950mA

with UPS functionpass LPS

SKU DRC-40B

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DRC-40B

DRC-100B 100W 27.6V In stock

DRC-180B 180W 27.6V Low stock

DRC-40B 40W 27.6V Low stock

DRC-60B 60W 27.6V In stock

Product variants

In stock

Overview

DRC-40B is the CH1: 27.6V / CH2: 27.6V output model of this series: rated current CH1: 0.95A / CH2: 0.5A, rated power 40.02W, typical efficiency 87%.

DRC-40 is a 40W AC/DC DIN rail type security power supply series. In addition to the primary output, there is a charger output with a smaller rated current, enabling the backup power supply application the security access systems require. DRC-40 accepts the universal input between 90VAC and 264VAC, and supplies 13.8VDC and 27.6VDC at output, respectively. With the efficiency up to 87%, it can operate with air convection cooling under -30℃ through 70℃. In addition to the key protection features such as overload protection, over voltage protection, battery low cut off, and battery reverse polarity protection (by fuse), the alarm signal for AC OK and battery low signaling is provided, via TTL open collector output for the standard model ( via relay contact output as the optional model), to facilitate the system design.

Features

Universal AC input / Full range
Protections: Short circuit / Overload / Over voltage
Battery low protection / Battery reverse polarity protection by fuse
Can be installed on DIN rail TS-35/7.5 or 15
Alarm signal for AC OK and Battery low (via TTL open collector, optional via relay)
Cooling by free air convection
Pass LPS
LED indicator for power on
100% full load burn-in test
3 years warranty

Specifications

DRC-40BSpecifications from the official datasheet (2026-03-31 edition)

OUTPUT

OUTPUT NUMBER: CH1 / CH2
DC VOLTAGE: CH1: 27.6V / CH2: 27.6V
RATED CURRENT: CH1: 0.95A / CH2: 0.5A
CURRENT RANGE: CH1: 0 ~ 1.45A / CH2: --------
RATED POWER: 40.02W
RIPPLE & NOISE (max.)^Note.2: CH1: 200mVp-p / CH2: --------
VOLTAGE ADJ. RANGE: CH1:24 ~ 30V
VOLTAGE TOLERANCE^Note.3: CH1: ±1.0% / CH2: --------
LINE REGULATION: CH1: ±0.5% / CH2: --------
LOAD REGULATION: CH1: ±0.5% / CH2: --------
SETUP, RISE TIME^Note.4: 400ms, 50ms/230VAC 800ms, 50ms/115VAC at full load
HOLD UP TIME (Typ.): 50ms/230VAC 10ms/115VAC at full load

INPUT

VOLTAGE RANGE: 90 ~ 264VAC 127 ~ 370VDC [DC input operation possible by connecting AC/L(+), AC/N(-)]
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 87%
AC CURRENT (Typ.): 0.8A/115VAC 0.6A/230VAC
INRUSH CURRENT (Typ.): COLD START 30A/115VAC 60A/230VAC

PROTECTION

OVERLOAD: 105 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: CH1:28.98 ~ 37.26V Protection type : Shut down o/p voltage, re-power on to recover
BATTERY CUT OFF: 20±1V

FUNCTION

AC OK: Open collector output, CONTACT : AC OK ; CUT OFF : AC Fail ; max. rating : 50V/30mA
BATTERY LOW: Open collector output, CUT OFF : Battery ; CONTACT : Battery Low ; max. rating : 50V/30mA; Battery low voltage : < 22V

ENVIRONMENT

WORKING TEMP.: -30 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 55℃) on CH1 output
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC (Note 5)

SAFETY STANDARDS: UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004, AS/NZS 60950.1 approved
WITHSTAND VOLTAGE: I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
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) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, BS EN/EN61204-3, light industry level, EAC TP TC 020

OTHERS

MTBF: 2496.2K hrs min. Telcordia SR-332 (Bellcore) ; 536.6K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 40*90*100mm (W*H*D)
PACKING: 0.3Kg; 42pcs/13.6Kg/0.82CUFT

Test conditions and notes8

1. All parameters NOT specially mentioned are measured at 230VAC 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. Length of set up time is measured at cold first start. Turning ON/OFF the power supply may lead to increase of the set up time.
5. 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 https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
6. Installation clearances : 40mm on top, 20mm on the bottom, 5mm on the left and right side are recommended when loaded permanently with full power. In case the adjacent device is a heat source, 15mm clearance is recommended.
7. 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).
8.The battery voltage is lower than the CUTOFF voltage and cannot perform AC reset charging.

Technical drawings

DRC-40B D R C - 4 0 series — D R C - 4 0 series

DRC-40B AC OK (Battery low) — AC OK (Battery low)

DRC-40B Mechanical Specification — Mechanical Specification

DRC-40B Installation Instruction — Installation Instruction

Typical applications

Downloads

Certificates6

Mean Well DRA-DRC-40-60-TUV Certificate PDF Download

Mean Well DRA-DRC-60-40-CB(UL) Certificate PDF Download

Mean Well DRA-DRC-40-60-CB(TUV) Certificate PDF Download

Mean Well DRA-DRC-40-60-EMC Certificate PDF Download

Mean Well DRA-DRC-40-60-CE-dec Certificate PDF Download

Mean Well DRA-DRC-40-60-UK-dec Certificate PDF Download

Test reports1

Mean Well DRC-40B Test Report PDF Download

Catalogues1

Mean Well Catalog (Industrial) PDF Download

FAQ

What is the Mean Well DRC-40B designed for?

The Mean Well DRC-40B is a 40.02W DIN rail power supply intended for security and other control-panel applications that need a 27.6V DC output. Its UPS-oriented feature set, including battery cut-off protection and AC OK and battery low alarm signals, makes it suited to systems where power status monitoring matters.

What output does the DRC-40B provide?

This model provides a rated 27.6V DC output with a rated current of 0.95A, for a total power rating of 40.02W. The output voltage is adjustable from 24V to 30V.

What protection features are included on the DRC-40B?

The DRC-40B includes overload protection (105~150% of rated power, hiccup mode with automatic recovery) and over-voltage protection (28.98~37.26V, shuts down the output; re-power on to recover). It also has battery cut-off at 20±1V, which helps distinguish it from a basic DIN rail power supply.

What input range does the Mean Well DRC-40B support?

The unit accepts a universal input range of 90 to 264VAC, and it also supports 127 to 370VDC input. This wide range makes it practical for use across varied mains power environments without needing a region-specific version.

Is the DRC-40B suitable for demanding industrial or enclosure environments?

The DRC-40B is rated for operation from -30°C to +70°C, with output derating at higher ambient temperatures per the derating curve. It is also designed for DIN rail TS-35/7.5 or 15 mounting, which fits typical panel and enclosure environments where compact DIN rail hardware is preferred.

What certifications and compliance standards does the DRC-40B meet?

This model is approved to UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004, and AS/NZS 60950.1 safety standards. For EMC, it meets EN55032 Class B and related EN61000 immunity and harmonic standards listed in the specification.

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Model	Power	Voltage	Current	Battery Voltage
Mean Well DRC-100A Power Supply 96.6W 13.8V 4.5A	96.6W	13.8V	4.5A	13.8V	View
Mean Well DRC-60A Power Supply 59.34W 13.8V 2.8A	59.34W	13.8V	2.8A	13.8V	View
Mean Well DRC-60B Power Supply 59.34W 27.6V 1.4A	59.34W	27.6V	1.4A	27.6V	View
Mean Well DRC-40A Power Supply 40.02W 13.8V 1.9A	40.02W	13.8V	1.9A	13.8V	View
Mean Well DRC-180B 179.4W 27.6V Power Supply With UPS 4.5A	179.4W	27.6V	4.5A	27.6V	View
Mean Well DRC-100B Power Supply 96.6W 27.6V 2.25A	96.6W	27.6V	2.25A	27.6V	View
Mean Well DRC-180A 179.4W 13.8V Power Supply With UPS 9A	179.4W	13.8V	9A	13.8V	View

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