Power supply: 48–250 V DC / 100–230 V AC
Line differential protection (87L)
3 phase CT + neutral and residual current inputs
4 VT voltage inputs
40 digital inputs, 16 digital outputs
Withdrawable design with 10-minute backup memory
Ethernet / Serial communication, up to 2 km (fiber optic)
Front protection IP54, panel or rack mounting
Voltage ratings: 240V, 480V, 600Y/347V
Trip units: 15A to 250A
Interrupting capacity: 10kAIC to 100kAIC
One-inch pole spacing (except QR 250A frame)
Suitable for spas, hot tubs, kitchens, bathrooms and various construction applications
Field-installable accessories: shunt trip, auxiliary switch, shunt/aux combinations (side-car mounted or internal pockets)
Complies with UL, CSA, NOM, IEC global standards
Product Type: Protection Relay
Relay Application: Universal
Reference / Model: REL52056
Mounting Size: 30TE, flush mounting
Power Supply: 48–230 V AC/DC
Measuring Inputs: 3 CT phase current, 1 CT residual current, 4 VT 100/110 V
Digital Inputs (DI): 16
Digital Outputs (DO): 8
Communication Ports: 2 rear RJ45, 1 front USB
Communication Protocols: IEC 61850 ed.1 & 2, IEC 60870‑5‑101, DNP3 TCP, Modbus TCP, EtherNet/IP
Protection Functions: Phase overcurrent, overload, earth fault, breaker failure, broken conductor detection, inrush protection, automatic recloser, switch‑ON to fault (SOTF), etc.
Dimensions: Height 169.5 mm, Width 170 mm, Depth 205 mm
Net Weight: 2.5 kg
Front Protection Degree: IP54
