Pollak 31-181 4-Position Ignition Switch – 4 Stud Terminals (#10-32) – Various Keyed – Extra Heavy Duty

Industrial-Grade Reliability for High-Amp Systems

The Pollak 31-181 4-Position Ignition Switch is the professional choice for heavy-duty trucks, construction machinery, and specialized equipment that requires a high-amperage, dependable start. Built with a robust zinc die-cast housing and engineered for high-cycle life, this switch is designed to withstand the rigors of daily commercial use.

Optimized for Performance and Safety This 4-position switch (Accessory – Off – On/Accessory – Start) features a momentary start position with a spring return. For added safety and security, the key is designed to be removable only in the "Off" position. With four #10-32 stud terminals, it provides a stable, bolted connection that resists loosening due to vehicle vibration or thermal expansion.

Engineered for Harsh Environments Whether it’s dust on a job site or moisture on a coastal route, the Pollak 31-181 is up to the task. It features internal weather-resistant seals to protect the high-conductivity copper contacts, ensuring consistent electrical flow and preventing internal corrosion.

Key Features:

• Heavy-Duty Body: Rugged zinc die-cast construction with a 1-inch mounting stem.

• Secure Wiring: 4-terminal #10-32 stud design for reliable heavy-gauge wire attachment.

• Various Keying: Comes with two keys (various keyed for individual security).

• High Power Capacity: Rated for 40A Accessory, 8A Ignition, and 75A Start (Make) at 14V DC.

• Standard Fitment: Fits standard 1" diameter mounting holes (Mounting Hole Pattern 5).

Common Applications:

• Heavy-Duty Freight Trucks & Trailers

• Earthmoving & Construction Equipment

• Agricultural Tractors & Combines

• Large Fleet Commercial Vehicles