Pollak 31-257 4-Position Ignition Switch - 5-Screw Terminals, D250 Keyed Alike

Heavy-Duty Reliability for Commercial and Industrial Vehicles

The Pollak 31-257 Ignition Switch is a rugged, professional-grade 4-position switch designed to withstand the demanding environments of heavy-duty trucks, construction equipment, and industrial machinery. Featuring a durable die-cast housing and a high-impact base, this switch is built for longevity and consistent performance.

Engineered for Precision & Protection This universal-type switch includes a momentary start function and is engineered with an internal lip seal and weather-resistant O-ring to prevent moisture and dust from entering the contact chamber. The D250 Keyed Alike configuration is ideal for fleet managers and operators who require a standardized keying system across multiple vehicles or pieces of equipment.

Key Features:

• 4-Position Function: Accessory – Off – On/Run – Start (Momentary).

• Keyed Alike (D250): Uses the industry-standard D250 key code for easy fleet integration.

• 5-Screw Terminals: Provides secure, vibration-resistant electrical connections.

• Weatherproof Design: Equipped with a lip seal and O-ring for superior protection against the elements.

• Robust Construction: Zinc die-cast housing with a high-impact plastic base and solid copper contacts.

Technical Specifications

• Part Number: 31-257 (Pollak Aftermarket)

• Switch Positions: 4 (Acc-Off-On-Start)

• Terminal Type: 5 Screw Terminals

• Key Code: D250 (Keyed Alike)

• Housing Material: Die-Cast Zinc

• Base Material: High-Impact Plastic

• Mounting Hole Pattern: Pattern 5 (Standard Universal)

• Current Rating: 12V DC (Typical: Ignition 8A, Accessory 30A, Start 75A make/20A break)

• Typical Applications: Commercial Trucks, Bobcat Skid Steers, Agricultural Equipment, Generators, and Construction Machinery.