Williams P323665 Thermal Cutoff L99H008 The Functional Devices RIBM2401SB is

The Functional Devices RIBM2401SB is a heavy-duty

ensuring a precise fit and restoring system performance to factory specifications

verify your specific wiring diagram as fan circuitry is electrically separate from thermostatic circuitry

cap screws should be tightened to 204 in-lb to ensure a secure polyurethane-to-metal bond during operation

this round metal-case capacitor provides the specific 45 microfarad capacitance required for the compressor circuit and 5 microfarads for the condenser fan motor

Williams P323665 Thermal Cutoff L99H008 The Functional Devices RIBM2401SB isWhen you're troubleshooting a Williams wall furnace that won't kick on despite a healthy pilot, the Williams P323665 Thermal Cutoff is a primary failure point to inspect. This genuine OEM Williams furnace part serves as a critical high limit safety switch, designed to interrupt the electrical circuit if internal temperatures exceed safe operating parameters. Specifically calibrated with a 167C (333F) trip point, this thermal link provides non