Pollak 31-103 4-Position Ignition Switch – Heavy Duty (Acc-Off-On/Res-Start) with 4 Threaded Studs

Professional Grade Control: Pollak 31-103 4-Position Ignition Switch

The Pollak 31-103 is a robust, versatile ignition switch engineered for heavy-duty trucks, construction equipment, and agricultural machinery. Designed for long-term durability, this 4-position switch provides seamless control over your vehicle’s electrical system, from auxiliary power to engine cranking.

This switch features a 4-position configuration (Accessory - Off - On/Resistance - Start), making it ideal for diesel engines that require a "Heat" or "Resistance" position before starting. The internal silver-plated contacts ensure maximum conductivity and a service life tested to 50,000 cycles. With four #10-32 threaded stud terminals, you get a secure, vibration-resistant connection that outperforms standard blade terminals in high-use industrial environments.

Key Features:

• 4-Position Versatility: Includes Accessory, Off, On (Run/Resistance), and Momentary Start positions for comprehensive vehicle control.

• Vibration-Resistant Terminals: Equipped with four #10-32 threaded studs (nuts and washers included) for a permanent, high-integrity wiring connection.

• Rugged Housing: Features a heavy-duty zinc die-cast housing and a high-impact plastic insulator to protect internal components from the rigors of the road.

• Secure Keying: Various keyed configurations provide an added layer of security for fleet vehicles and equipment.

• Standard Dashboard Fit: The 1" diameter mounting stem fits panels up to 3/32" thick, making it a drop-in replacement for many OEM applications.

Technical Specifications:

• Part Number: 31-103

• Positions: 4 (Acc - Off - On/Res - Start)

• Terminals: (4) #10-32 Threaded Studs

• Electrical Rating: 10A @ 12V DC (Ignition/Acc), 5A @ 12V DC (Start)

• Mounting Stem: 1" -24 Thread, 13/32" Long

• Housing: Die-Cast Zinc