Siemens 3TG10 10-0AL2 Coupling Power Relay, Screw Connections, 4 Pin, Hum Free, 35mm Standard Mounting Rail Size, 4 NO Contacts, 20VAC Max Resistive Load, 5Hp Rating of Three Phase Load at 50Hz,
Amazon.com: Siemens | 6ES7216-2BD23-0XB0 | CPU 226 Compact Unit : Electronics