Miller Perkins Engine Coolant Temp Sensor 110C

Protect Your Investment with the Miller 217695 Temp Switch

Your engine-driven welder is the heart of your mobile operation, and the engine is its most expensive component. The Miller 217695 Coolant Temperature Switch is a small but vital part that stands between a hard day's work and a blown engine. Designed for Miller welders running Perkins engines, this sensor keeps a constant watch on your coolant temperature, ready to act if things get too hot.

How It Works: This switch is set to trigger at 110°C (230°F). It operates as a "Normally Closed" switch. Under normal operating temps, it completes the circuit that keeps your engine running. If a hose bursts, the radiator gets clogged, or the fan belt snaps and the temperature spikes to 110°C, this switch opens the circuit. This usually kills the engine immediately, saving you thousands of dollars in rebuild costs by stopping the machine before the heat warps the head or scores the pistons.

Signs You Need a Replacement:

• False Shutdowns: If your machine shuts off randomly even when the engine isn't hot, an old sensor might be failing and "opening" the circuit prematurely due to vibration or internal corrosion.
• No Shutdown on Overheat: If your machine has boiled over without shutting down, the switch may be stuck closed, which is dangerous for the equipment.
• Physical Damage: Broken plastic connectors or corroded terminals can prevent the switch from sending the correct signal.

Don't risk your Perkins engine with generic auto-parts store sensors that might not have the right temperature rating. The Miller 217695 is the exact OEM part specified for your machine, ensuring the threads fit perfectly and the connector snaps right in. Get your machine back to reliable status and weld with confidence knowing your thermal protection is active.