Pollak 31-399 3-Position Ignition Starter Switch – 7 Blade Terminals – Includes (PR) Proof Terminal – Heavy-Duty Zinc Die-Cast

Advanced Ignition Control with Integrated System Monitoring

The Pollak 31-399 3-Position Ignition Switch is a specialized electrical solution designed for modern heavy-duty vehicles and industrial machinery. Engineered with a rugged zinc die-cast housing, this switch stands out due to its 7-blade terminal configuration, which includes a dedicated (PR) Proof Terminal. This feature allows for integrated circuit testing or indicator light "proof" functionality, ensuring your vehicle's safety systems are operational every time you turn the key.

Built to withstand the rigors of the construction, agricultural, and trucking industries, the 31-399 provides a reliable interface for engine starting and accessory management while protecting the internal components from environmental damage.

Key Features & Benefits:

• 3-Position Functionality: Precise indexing for Off – On/Accessory – Start (Momentary Start) operations.

• 7-Blade Terminal Base: Provides a comprehensive wiring interface, allowing for complex electrical setups and accessory integration.

• Integrated (PR) Proof Terminal: Includes a specialized terminal for "Press-to-Test" or proof-of-operation circuits, ideal for monitoring critical engine functions.

• Heavy-Duty Construction: Features a one-piece zinc die-cast housing and a high-impact plastic base for maximum durability.

• Internal Safety Seals: Equipped with weather-resistant O-rings and a lip seal to block out moisture, dust, and debris, extending the life of the internal contacts.

• Standard Mounting: Fits a 1" diameter mounting hole (Pattern 4), making it a direct replacement for many OEM and aftermarket applications.

Technical Specifications:

• Part Number: 31-399 (also available as 31-399P)

• Positions: 3 (Off-On/Acc-Start)

• Terminals: 7 Blade Terminals (Includes PR Terminal)

• Rating: 12V DC, 30A (Typical)

• Material: Zinc Die-Cast Housing

• Keying: Assorted Key Codes (Includes 2 Keys)

• Starter Lockout: No