Siemens 3RT10 23-3BB40 Motor Contactor, 3 Poles, Spring Loaded Terminals, S0 Frame Size, 24V DC Coil Voltage: Amazon.com: Industrial & Scientific
Siemens 3RH2140-1AB00 4 pole 10 AMP Control Relay with 4 N.O. and contacts and a 24 volt AC coil - Screw Terminals: Amazon.com: Industrial & Scientific