Technical Information & Details for the MEAN WELL DUPS40 DC-UPS Module
- Function: Uninterruptible DC-UPS Controller
- Normal Input Voltage: 24 V DC
- Input Voltage Range: 24 – 29 V DC
- Rated Current: 40 A
- Output Voltage Range: 21 – 29 V DC
- Battery Charging Current: 2 A
- Compatible Battery Type: Lead-acid (24V system)
- Battery Capacity Range: 4 AH – 135 AH
- Protections: Battery reverse polarity, Short circuit, Over discharge current, Deep discharge
- Relay Contact Ratings: 30 VDC / 1 A (max.) resistive load
- Diagnostic Monitoring: DC BUS OK, Battery Discharge, Battery Fail
- Operating Temperature: −30 °C to +70 °C
- Cooling: Free air convection
- Dimensions (H x W x D): 125.2 mm x 63 mm x 113.5 mm
- Weight: 420 g
- Safety & EMC Certificates: EAC, CE, UKCA, BS EN/EN55032 Class B
- LED Indicators: Green (DC BUS OK), Red (Battery Fail), Yellow (Battery Discharge)
- Manufacturer Warranty: 3 Years
Information about the MEAN WELL DUPS40
The MEAN WELL DUPS40 is a high-performance 40A DIN rail type DC-UPS module specifically engineered to ensure uninterrupted system operation during AC mains failures. By acting as a sophisticated controller between a 24V power supply, a battery pack, and the load, it provides seamless power buffering to prevent costly system downtime in industrial environments. A standout characteristic of this module is its intelligent battery management, which features a 2A charging current and supports a wide range of lead-acid battery capacities from 4AH to 135AH, making it highly adaptable for various backup duration requirements. The DUPS40 is equipped with comprehensive diagnostic tools, including dedicated relay contacts and tri-color LED indicators for real-time monitoring of the DC bus status, battery discharge conditions, and potential battery failures. Its robust design includes internal reverse polarity protection and a low voltage disconnect feature to safeguard the battery's lifespan against deep discharge. This module is an ideal solution for critical infrastructure such as data centers, semiconductor fabrication, and security systems where high reliability and fast installation are paramount.