• Output Power: 480 W (Max Continuous System Power)
• Output Voltage: 12 V DC
• Output Current: 0 – 40 A
• Input Voltage Range: 9 – 14 V DC (Dual Input Channels)
• Efficiency: High efficiency using ultra-low loss MOSFET design
• Ripple & Noise: Ultra-low drop voltage loss
• Inrush Current: N/A (Passive Redundancy Device)
• No-load Power Consumption: Minimal internal dissipation
• Operating Temperature: −40 °C to +80 °C
• Cooling: Free air convection (fanless)
• Protections: Input Reverse Polarity, Over Voltage, Short Circuit
• Overvoltage Category: OVC II
• Isolation Voltage: 500 V AC (Relay contact to GND)
• Dimensions (H x W x D): 125.2 mm x 55 mm x 100 mm
• Weight: approx. 500 g
• Safety & EMC Certificates: UL 62368-1, IEC 62368-1, EAC, CE, UKCA
• LED Indicator: 2-channel DC OK status LEDs & Alarm relay contacts
• Manufacturer Warranty: 3 Years

Information on MEAN WELL DRDN40-12

Engineered to deliver fail-safe performance across mission-critical dual-input networks, the MEAN WELL DRDN40-12 operates as a specialized 1+1 and N+1 redundancy module for demanding industrial setups. Designed with an ultra-wide operating temperature range of −40 °C to +80 °C, this model withstands extreme thermal environments without compromising system stability. Real-time diagnostics are handled via built-in 2-channel DC OK signal relay contacts that immediately report bus failures to higher-level controllers. Fully compliant with international UL 62368-1 safety standards and backed by a 3-year warranty, this 55mm slim module offers ideal structural protection for high-availability DIN-rail installations.