The York S1-024-27542-000 Relay is a mission-critical 24V DPDT relay designed for precise switching in residential and light commercial HVAC systems

and steam systems up to 366°F

Designed to integrate seamlessly with Selectra Series 14 modulation controls

this model features a 120V coil

Precision Switching: Narrow differential of 0

Bard EHWA03-A10B Heat Kit 30067439-890 The York S1-024-27542-000 Relay isThe Bard EHWA03 A10B is a 10KW electric heat kit designed for field installation in specific Bard wall mount air conditioners and heat pumps. This 230 208V single phase heater package serves as the direct replacement for EHWA03 A10, providing supplemental or emergency heat for HVACR systems. Built with heavy duty nichrome heating elements and integrated safety limits, the EHWA03 A10B ensures reliable thermal performance in demanding commercial