MEAN WELL DRC-40B 34.5W 13.8V DIN Rail DC-UPS with Battery Charger

With a wide 90-264 VAC input and 13.8 VDC / 2.5 A output, the MEAN WELL DRC-40B delivers 34.5 W of reliable backup power for critical DC loads. This DIN rail mountable DC-UPS integrates a 1 A battery charger for 12 V lead-acid batteries, ensuring seamless transition during mains failure.

Overview

The DRC-40B is a compact, all-in-one uninterruptible power supply designed for industrial control systems, security devices, and automation equipment. It accepts universal AC input and provides regulated 13.8 VDC output, while simultaneously charging a connected 12 V lead-acid battery. In the event of AC loss, the unit instantly switches to battery power, maintaining output without interruption. The built-in charger supports flooded, gel, and AGM battery types, making it versatile for various installations.

What stands out

• Wide input range: 90-264 VAC (127-370 VDC) for global compatibility.
• Integrated 1 A charger for 12 V lead-acid batteries (flooded, gel, AGM).
• DIN rail mounting (TS-35/7.5 or TS-35/15) for quick installation in control cabinets.
• Comprehensive protection: short circuit, overload, over voltage, battery low disconnect, and battery reverse polarity.
• Status signaling via relay contact and LED for DC OK, battery fail, and charger fail.
• High efficiency up to 89% and free air convection cooling for silent operation.
• Safety approvals: UL60950-1, TUV EN60950-1, EAC; harmonic compliance EN61000-3-2 Class A.

Technical details

• Output voltage: 13.8 VDC
• Output current: 2.5 A
• Output power: 34.5 W
• Charger output current: 1 A
• Battery compatibility: 12 V lead-acid (flooded, gel, AGM)
• Efficiency: up to 89%
• Operating temperature: -30 to +70 °C
• Isolation voltage (I/P-O/P): 3 KVAC
• Housing material: plastic
• Cooling: free air convection

Our verdict

The MEAN WELL DRC-40B is a robust and reliable DC-UPS solution for industrial applications. Its wide input range, battery charging capability, and DIN rail mounting make it an excellent choice for ensuring uninterrupted operation of critical equipment.