Phoenix Contact 3相 电压 监控继电器, 带单刀双掷 触点, 24 V 直流，24 → 230 V 交流
**EMD Monitoring Relays**
This range of multifunctional monitoring relays allows to monitor electrical as well as physical system parameters. EMD Monitoring Relays can measure:
贸泽:
I/O Modules EMD-SL-3V-400-N
艾睿:
Electromechanical Relay 230V to 400VAC 5A SPDT 22.5x113x90mm DIN Rail Monitoring Relay
Allied Electronics:
Voltage Monitoring Relay with SPDT Contacts, 3 Phase, 24 V dc, 24 to 230 V ac