International Environmental 70665401 Relay This genuine OEM furnace limit

This genuine OEM furnace limit switch is standard in Nordyne

The brass construction is machined for high-heat durability and consistent gas delivery across the burner profile

Unlike manual rollout switches

the limit switch may have opened due to high internal temperatures

Key Benefits Broad Compatibility: Fully interchangeable with part number 143-16-021-02 for simplified inventory management

International Environmental 70665401 Relay This genuine OEM furnace limitThe International Environmental 70665401 Relay is a heavy duty 24V SPDT switching relay engineered for reliable performance in commercial fan coil units and industrial air handling systems. As a genuine IEC replacement part (also referenced as E030 70665401), this component is designed to handle both Normally Open (N O) and Normally Closed (N C) circuits, providing essential versatility for contractors managing complex HVACR control logic. With a