The DUPS40 is a 24V / 40A DIN rail DC-UPS controller designed to work with an external power supply and battery to provide backup power for 24V systems.

When the DC bus fails or is interrupted, the load is immediately transferred to the battery to ensure continuous operation.

Key Specifications

• Nominal voltage: 24V DC

• Input range: 24–29V DC

• Output range: 21–29V DC

• Rated current: 40A

• Charging current: 2A

• Lead-acid batteries 4–135Ah

• Natural convection cooling

• IP20

• 3-year warranty

Protection Features

• Battery reverse polarity protection

• Short circuit protection (auto recovery)

• Over discharge current protection

• Battery deep discharge cut-off

LED indicators: DC BUS OK (Green), Battery Fail (Red), Battery Discharge (Yellow).
Relay outputs: DC OK and Battery Fail (30VDC / 1A).