ABB SACE Emax ACB Air Circuit Breaker

Feature & Principle

It is ABB SACE flagship low voltage air circuit breaker series. It adopts modular withdrawable structure, matched with PR electronic trip unit to realize multi-segment protection. It supports IEC61850, Modbus communication for energy monitoring and remote control. Built with safety interlock, door closed racking function and arc protection. It can be configured as fixed type or withdrawable type for main incoming, bus coupler and feeder protection.

Specifications

Model: Emax (SACE Emax / Emax 2) Brand: ABB Frame range: E1.2, E2.2, E3.2, E4.2, E6.2 Rated current: 400A ~ 6300A Rated voltage: up to 690V AC Trip unit: PR121 / PR122 / PR123 / PR331 / PR332 optional Structure: Fixed / withdrawable Communication: IEC61850, Modbus TCP/RTU Application: Power plant, petrochemical, factory main distribution cabinet, data center power system Certification: CE, IEC

Components & Diagnostics

Main contact group, arc chute, electronic trip unit, stored energy operating mechanism, closing coil, auxiliary switch, current transformer. Common faults: contact burning, energy storage failure, trip unit false action, communication dropout, coil burnout.

Product Brief

Emax air circuit breaker, ABB SACE low voltage main distribution spare widely used for industrial power cabinet overhaul and replacement.