Description

RXHB/RAHB – Compact breaker failure relay and protection assemblies

The compact current relay RXHB 411 has a wide application range as an important part of the backup protection for feeders and lines, transformers, capacitor banks, electric boilers, as well as generators and motors.

Main Features:

• Three-phase compact numerical breaker failure relay
• Single- and three-phase breaker failure protection
• Pole disagreement protection

RXHB 411 is available in four different versions:

• Basic version
• Basic version together with overcurrent and earth-fault protection
• Basic version together with binary I/O option
• Basic version together with overcurrent and earth-fault protection and binary I/O option

Options:

• Phase overcurrent protection with two stages and definite time delay
• Earth-fault protection with two stages and definite time delay
• 4 additional inputs and 4 additional outputs