Amazon.com: Siemens 3RT2018-1BB42 CONTACTOR, AC-3, 7.5KW/400V, 1NC, DC 24V, 3-POLE, SZ S00 SCREW TERMINAL: Home Improvement
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
Amazon.com: Siemens 6EP13325BA10, Power Supply; AC-DC; 24V@4A; 85-264V in; Enclosed; DIN Rail Mount; SITOP Power Series: Computers & Accessories
Siemens SITOP PSU100D 24 Volt Direct Current, 12.5 Amp Power Supply: Amazon.com: Industrial & Scientific
LOGO 1.3A Power Supply 115/230V to 24vdc: Electronic Components: Amazon.com: Industrial & Scientific