Eaton / Moeller DILA-40 4 pole control relay with a 24 volt AC coil. Comes with 4 N.O. base contacts, rated for 16 AMPS and mounts on standard 35mm DIN rail: Amazon.com: Industrial & Scientific
Enclosed Fan Relay, SPNO/SPNC, 24V: Amazon.com: Tools & Home Improvement
Baomain General Purpose Power Relay LY2NJ DC 24V Coil LED Indicator 8 pin Terminal with DIN Rail PTF08A Socket Base: Amazon.com: Industrial & Scientific
Universal Trane American Standard 24 Volt 40 amp Relay Contactor C147094P02: Amazon.com: Industrial & Scientific
Amazon.com: YWBL-WH AC Contactor 4P 2NO 2NC 63A 24V/230V 50/60Hz Household AC Contactor 100,000 Times Electrical Life(AC24V), Contactor : Industrial & Scientific
Amazon.com: Multi Voltage Time Delay Relay Off Switch with 7 Function Choices DC 24V & AC 24-240V Delay Timer Selectable Time Range 0.1s to 100h : Industrial & Scientific
Amazon.com: OONO DPST 1NO 1NC 8Amp Power Relay Module, AC 110V 115V 120V Control Voltage : Industrial & Scientific
Amazon.com: Yinhing Household AC, 4P 25A 24V/230V 50/60Hz Household AC Contactor DIN Rail Mount 2NO 2NC(AC230V) : Tools & Home Improvement
Amazon.com: DIN Rail Mount AC/DC Control DPDT 5Amp Pluggable Power Relay Interface Module (AC/DC 24V, 2 Relay) : Industrial & Scientific
Electronics-Salon 4 SPDT 10Amp Power Relay Module, DC 24V Version.: Amazon.com: Industrial & Scientific