Technical Information & Details for MEAN WELL DUPS20 DC-UPS Module
- Rated Output Current: 20 A
- Input Voltage Range: 24 – 29 V DC
- Output Voltage Range: 21 – 29 V DC
- Battery Charging Current: 2 A
- Supported Battery Capacities: 4 AH – 135 AH (Lead-acid)
- Normal Battery Voltage: 24 V DC (e.g., 2 x 12 V in series)
- Operating Temperature: −30 °C to +70 °C
- Cooling: Fanless free air convection
- Protection Functions: Battery reverse polarity, Short circuit, Deep discharge, Over-discharge current
- Relay Contacts: DC BUS OK, Battery Discharge, Battery Fail (max. 30V/1A)
- LED Indicators: Green (DC OK), Yellow (Discharge), Red (Fail/Warning)
- Isolation Resistance: > 100M Ohms / 500V DC
- Dimensions (H x W x D): 125.2 mm x 40 mm x 113.5 mm
- Weight: 310 g
- Safety & EMC Certificates: UL62368-1, EAC, CE, UKCA, BS EN/EN55032 Class B
- Manufacturer Warranty: 3 Years
Information about the MEAN WELL DUPS20
The MEAN WELL DUPS20 is a high-performance 20A DIN rail type DC-UPS controller designed to provide seamless backup functionality for 24V industrial power systems. When paired with a primary power supply and external lead-acid batteries, it ensures continuous system operation by immediately connecting the load to the battery pack during AC mains failure. One of its standout characteristics is the comprehensive diagnostic capability, featuring a battery test function that activates every 30 seconds to detect faulty cells or connection issues before a crisis occurs. The unit is remarkably efficient, housed in a compact 40mm slim design that optimizes rail space in crowded cabinets. It also features a sophisticated battery management system with low voltage disconnect (LVD) to prevent deep discharge, thereby protecting your battery investment. Engineered for high reliability, it supports a wide variety of battery capacities from 4AH up to 135AH, making it a versatile solution for semiconductor fabrication, industrial control systems, and critical communication infrastructure where uninterrupted power delivery is essential.