Heil Quaker/ICP 1171981 Gas Furnace Interlock Switch

Gas Furnace Interlock Switch ensures safe operation by interrupting power if a panel is opened or a door is removed. This Interlock Switch is a direct OEM-compatible replacement for Heil Quaker/ICP systems and is used on 9MPT050F12B1, 9MPT075F14B1, 9MPT100J16B1, and 9MPT125L20B1 natural gas furnaces.

Built for dependable performance in residential gas furnaces, this furnace safety switch helps prevent dangerous conditions by ensuring the burner cannot operate unless all safety covers are in place. The part is a rugged, plug-and-play replacement that fits seamlessly with the listed models and similar Heil Quaker/ICP installations.

Designed for straightforward installation, this interlock switch uses standard wiring connections and is a direct replacement part that helps maintain warranty compliance. It is suitable for natural gas furnaces in residential settings and is compatible with common Heil Quaker/ICP control circuits.

• Compatibility: 9MPT050F12B1 / 9MPT075F14B1 / 9MPT100J16B1 / 9MPT125L20B1 natural gas furnaces
• Safety: reliable interlock switch for furnace safety and compliant shutoff
• Easy installation: plug-and-play replacement with standard wiring
• Durable build: rugged construction for extended service life in furnace environments
• OEM alignment: designed to fit Heil Quaker/ICP systems (1171981)