alarm switch type AL-HU, auxiliary switch type AX-HU, shunt trip device type SHT-HU, and undervoltage trip device type UVT-HU intended for installation in Type BK63HU circuit breakers
alarm switch type AL-HU, auxiliary switch type AX-HU, shunt trip device type SHT-HU, and undervoltage trip device type UVT-HU intended for installation in Type BK63HU circuit breakers