ABB REX 521 Motor Protection Relay

Part Number: REX521GHHPSH07G

General Information 

• Product Type: Motor Protection Relay / Feeder Protection Relay

• Manufacturer: ABB

• Auxiliary Power Supply:

• AC: 110/120/220/240 V (85% to 110% of rated value)

• DC: 24/48/60 V or 110/125/220 V (80% to 120% of rated value)
  Inputs:

• Energizing inputs for conventional current and voltage transformers

• Versions available with inputs for current and voltage sensors

• Interfaces:

• LCD display and navigation buttons for local operation

• Optically isolated serial communication port

Dimensions & Weight 

• Width: 148.8 mm 

• Height: 249.8 mm

• Depth: 235 mm

• Weight: 5 kg

Environmental Ratings 

• Operating Temperature: -10°C to +55°C

• Storage Temperature: -40°C to +70°C

The ABB REX 521 is designed for robust motor protection and feeder protection, ensuring the safety of medium-voltage networks and large three-phase motors. It offers a wide range of protection functions and comes with easy-to-use interfaces for local control and remote monitoring.