The Miller 177123 Oil Pressure Switch is a vital safety component designed to protect the heart of your engine-driven welding equipment. In the demanding environments where welders operate—from dusty construction sites to remote pipelines—engine health is paramount. This genuine Miller OEM part serves as the first line of defense against catastrophic engine failure caused by lubrication loss.
Engineered specifically for Miller Electric power sources, this switch is calibrated to activate at exactly 4 PSI. It utilizes a Normally Open (NO) contact configuration, which is standard for many safety shutdown circuits. When oil pressure builds upon startup, the switch changes state to allow the engine to run; if pressure drops below the critical 4 PSI threshold during operation, the switch reverts, breaking the circuit and triggering an immediate engine shutdown. This instantaneous response prevents the engine from running without adequate lubrication, saving you thousands of dollars in potential rebuild or replacement costs.
When it comes to internal engine components and safety sensors, aftermarket alternatives often lack the precise calibration and durability of OEM parts. The Miller 177123 is built to withstand the high vibration, thermal cycling, and harsh conditions inherent to industrial welding generators. It features a robust housing and a secure friction terminal connection to ensure consistent electrical contact, even when the machine is rattling during heavy operation.
Replacing a faulty oil pressure switch is a straightforward maintenance task that can significantly extend the life of your equipment. If your welder is shutting down unexpectedly or failing to stay running after the start cycle, a faulty pressure switch is a common culprit. Installing this genuine replacement restores the factory-specified protection your machine was designed with.
| Additional Information |
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| Packaging Description:1 Per Ea |
| Part Type:Oil Pressure Switch |
| Pressure Rating:4 PSI |
| Contact Configuration:Normally Open (NO) |
| Terminal Type:Friction Terminal |
| Application:Engine Driven Welders |
| ----- new values below ---- |
| Part Type:Oil Pressure Switch |
| Pressure Rating:4 PSI |
| Contact Configuration:Normally Open (NO) |
| Terminal Type:Friction Terminal |
| Application:Engine-Driven Welders |
| Brand:Miller OEM |
| Packaging Description:1 Per Ea |
