160 A MCCB with motor protection and communication
Designed specifically for motor protection, it includes phase failure detection and an adjustable overload trip with a 32 A minimum setting up to the 160 A full-scale value. The 3-pole frame carries a 187 kA interrupting rating at 240 V, stepping down to 121 kA at 415/440 V and 75.6 kA at 500 V, with a 4.5 kA floor at 690 V.
At 690 V the 4.5 kA rating is low enough that this breaker should not be the sole protection on a 690 V motor circuit unless the available fault current is confirmed below that threshold. The short-time delay is adjustable from 3 s to 20 s, which lets you coordinate with downstream motor starters and avoid nuisance trips on inrush.
Monitoring and communication functions
This MCCB includes communication capability and other measurement functions beyond basic overcurrent protection.