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
LOGO 1.3A Power Supply 115/230V to 24vdc: Electronic Components: Amazon.com: Industrial & Scientific
Siemens 3RT1045-1BB40 Contactor, rated at 80 A, 37 kW with a coil voltage of 24V DC. Switching Voltage 400 V AC: Amazon.com: Industrial & Scientific
Amazon.com: Siemens 6EP13325BA10, Power Supply; AC-DC; 24V@4A; 85-264V in; Enclosed; DIN Rail Mount; SITOP Power Series: Computers & Accessories