制造商：ABB Control
功能描述：RELAY 1 PHASE 2C/O OVER/UNDER CURRENT
制造商：ABB Control
功能描述：RELAY, 1 PHASE, 2C/O, OVER/UNDER CURRENT
制造商：ABB Control
功能描述：RELAY, 1 PHASE, 2C/O, OVER/UNDER CURRENT; Contact Configuration
制造商：ABB Control
功能描述：Current Monitoring Relay 24-240 Vac/dc