Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well DRDN40-48 Redundancy Module Power Supply 40A - DIN Rail

redundancy modulesupport 1+1 and N+1 redundancyrelay contacts for monitoring power status

SKU DRDN40-48

Log in to see price Trade pricing & online ordering for account holders

In stock

Overview

DRDN40-48 is the model of this series: rated current 0~40A per input Continuous, typical efficiency 98%.

The DRDN40 series is a 40A redundancy module that can be used with a power supply to improve overall system operation reliability. Product key features include:12V/24V/48V input voltage for selection, support N+1 and 1+1 redundancy systems,built-in two rails DC input contacts and single output. The MOSFET technology implemented can reduce heat loss and reduce the voltage difference between the input and output voltages, built-in 2 channels DC OK relay contacts for monitoring output status, ultra-wide operating temperature of -40 to +80℃ and narrow width (55mm).

Features

Support 1+1 and N+1 redundancy system
2 channels input and 1 output
Suitable for redundancy operation of 12V/24V/48V system
Output current up to 40A
Cooling by free air convection
-40~+80℃ ultra-wide operating temperature ( >+60℃ derating)
55mm slim width
Built-in 2 channels DC OK signal and alarm relay contact
3 years warranty

Specifications

DRDN40-48Specifications from the official datasheet (2026-03-31 edition)

INPUT

NUMBER OF INPUT: 2 Channels
DC NORMAL VOLTAGE: 48Vdc
DC VOLTAGE RANGE: 36~60Vdc
RATED CURRENT: 0~40A per input Continuous
VOLTAGE DROP (Vin-Vout) (max.): 0.3V
PEAK CURRENT: 0~60A per input 5Sec.
EFFICIENCY (Typ.): 98%
INPUT REVERSE CURRENT (max.): 1mA
INPUT REVERSE VOLTAGE (max.): 65Vdc

OUTPUT

RATED CURRENT: 0~40A, Continuous
PEAK CURRENT (max.): 60A, 5Sec.
CAPACITANCE(Typ.): 320uF
STANDBY POWER LOSSES(Typ.): 1.5W

PROTECTION

OVERLOAD: <60A,5Sec. No damage
SHORT CIRCUIT: <60A,5Sec. No damage

FUNCTION

REDUNDANCY: For 1+1 redundancy ,and support N+1 redundancy
BOTH INPUTS VOLTAGE ALARM: <34.2V or >63V (±5%)
RELAY: 30Vdc/1A resistive load
LED STATUS DISPLAY: Green LED OK

ENVIRONMENT

COOLING: Free air convection
WORKING TEMP.^Note.2: -40 ~ +80℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 5 ~ 95% RH non-condensing
STORAGE TEMP.: -40 ~ +85℃
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 60℃ )
VIBRATION: Component:10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes; Mounting: Compliance to IEC61373
OPERATING ALTITUDE^Note.3: 5000 meters/OVC II

SAFETY & EMC (Note.4)

SAFETY STANDARDS: IEC62368-1, UL62368-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: IP/OP - Chassis : 0.5KVac ; IP/OP- Relay : 0.5KVac ; Relay - Chassis : 0.5KVac
ISOLATION RESISTANCE: IP/OP - Chassis, IP/OP- Relay, Relay - Chassis:>100M Ohms / 500Vdc / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032(CISPR32) Class B
Radiated BS EN/EN55032(CISPR32) Class B
Voltage Flicker ----- -----
Harmonic Current ----- -----
EMC IMMUNITY: BS EN/EN55035, BS EN/EN61000-6-2(BS EN/EN50082-2)

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 4, 15KV air; Level 3, 8KV contact; criteria A
Radiated BS EN/EN61000-4-3 Level 3, 10V/m; criteria A
EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV; criteria A
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-Chassis ;criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V; criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m; criteria A

Parameter	Standard	Test Level
Conducted	BS EN/EN55032(CISPR32)	Class B
Radiated	BS EN/EN55032(CISPR32)	Class B
Voltage Flicker	-----	-----
Harmonic Current	-----	-----

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 4, 15KV air; Level 3, 8KV contact; criteria A
Radiated	BS EN/EN61000-4-3	Level 3, 10V/m; criteria A
EFT / Burst	BS EN/EN61000-4-4	Level 3, 2KV; criteria A
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line ;Level 3, 2KV/Line-Line-Chassis ;criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V; criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A/m; criteria A

OTHERS

MTBF: 1672.9K hrs min. Telcordia SR-332 (Bellcore) ; 499.5K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 55*125.2*100mm (W*H*D)
PACKING: 0.5Kg;20psc/11Kg/1.49CUFT

Test conditions and notes4

1. All parameters NOT specially mentioned are measured at normal input(12V/24V/48V) , rated load and 25℃ of ambient temperature.
2. Derating may be needed over high ambient temperature. Please check the derating curve for more details.
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 as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the 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 )

Technical drawings

DRDN40-48 Derating Curve — Derating Curve

DRDN40-48 Typical Application Notes — Typical Application Notes

DRDN40-48 Mechanical Specification — Mechanical Specification

Typical applications

Industrial control system
Semiconductor fabrication equipment
Factory automation
Electro-mechanical apparatus

Downloads

Certificates6

Mean Well DRDN20-DRDN40-ERDN20-ERDN40 CB(UL) Certificate PDF Download

Mean Well DRDN20-40 EMC Certificate PDF Download

Mean Well DRDN20-40 CE-dec Certificate PDF Download

Mean Well DRDN20-40 UK-dec Certificate PDF Download

Mean Well EAC Certificate PDF Download

Mean Well E215312-UL Certificate PDF Download

Test reports1

Mean Well DRDN40-48 Test Report PDF Download

Catalogues2

Mean Well Catalog (Industrial) PDF Download

Mean Well DIN RAIL Catalog PDF Download

FAQ

Can I use the DRDN40-48 in a 48V industrial automation panel that needs redundant power?

Yes. The DRDN40-48 is a 48V redundancy module rated for 40A continuous (60A peak for 5 seconds) and supports both 1+1 and N+1 redundancy, which fits automation panels built around redundant 48V DC power. Its DIN rail format also makes it appropriate for structured control cabinet layouts.

Is the DRDN40-48 suitable for 48V control cabinets that need monitored power status?

It is suitable where the cabinet uses a 48V DC bus and requires redundancy with status monitoring. The relay contacts for monitoring power status help integrate the module into supervised industrial control systems. With 40A output capacity, it supports higher-current 48V cabinet power designs.

Can this model be used in building management enclosures that run on 48V DC?

Yes, when the building management enclosure is designed around 48V DC and needs redundant supply architecture. The DRDN40-48 supports 1+1 and N+1 redundancy and is built for DIN rail installation, which aligns with enclosure-based control systems. Each of its two inputs accepts 36-60Vdc, and the output carries up to 40A continuous.

Is the DRDN40-48 a practical choice for high-power 48V DIN rail systems?

Yes. This model is rated for 40A continuous at 48V nominal (36-60Vdc input range), so it fits higher-power 48V DIN rail systems that need redundancy rather than a single feed path. The 125.2 × 100.0 × 55.0 mm housing keeps that capacity in a cabinet-oriented format.

What are the differences between the DRDN40-48 and the other DRDN40 models?

The DRDN40-12 is for 12V systems (9-14Vdc input range), the DRDN40-24 for 24V systems (19-29Vdc), and the DRDN40-48 for 48V systems (36-60Vdc). All three share the 40A current rating, while the input voltage range and alarm thresholds differ by version. Selection should follow the required DC bus voltage in the target system.

Should the DRDN40-48 be used inside a control enclosure?

Yes, that is the more appropriate use case based on the DIN rail form factor and redundancy role. The operating temperature range of -40°C to +80°C supports demanding cabinet conditions, but the product is best matched to enclosed control or electrical cabinets rather than exposed mounting. Its 0.5 kg weight also supports standard panel integration.

Payment & Security

Payment methods

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Please log in to write a review.

{ "id":8343008674091, "variants" :[{ "context":"default", "variant_id": 45316789207339, "sku":"DRDN40-48", "inventory_qty" : 5, "customer" :false, "custom_html" :"\u003ca class=\"text-current logged-out-price logged-out\" href=\"https:\/\/wellforces.co.nz\/customer_authentication\/redirect?locale=en\u0026region_country=NZ\"\u003e\n \u003cspan \u003ePlease \u003c\/span\u003e \u003cspan class=\"login-text\"\u003eLogin\u003c\/span\u003e \u003cspan\u003e for Pricing\u003c\/span\u003e\n \u003c\/a\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }