Pollak 21-485 Precision Ball Switch – Normally Open (NO), Sealed Terminals (Fits MP 12052644)

Heavy-Duty Performance with Weatherproof Reliability

The Pollak 21-485 Precision Ball Switch is a top-tier sensing solution engineered for the most demanding environments in the trucking and heavy machinery industries. This Normally Open (NO) switch is designed to provide precise electrical activation upon physical contact, making it an essential component for critical vehicle systems.

Sealed for Maximum Protection Equipped with sealed terminals, the 21-485 is built to repel moisture, road salt, and grime. It is specifically designed to mate with the Metri-Pack 150 Series (MP 12052644) connector, ensuring a professional-grade, watertight seal that prevents corrosion and electrical failure.

Engineered to Outlast With a mechanical life of 1,000,000 cycles, this switch is a "set it and forget it" solution for fleet managers and owner-operators. Whether utilized for neutral sensing, backup lamps, or PTO engagement, its rugged construction ensures it performs flawlessly in temperatures ranging from -40°F to +250°F.

Key Specifications:

• Circuitry: Normally Open (NO)

• Termination: Sealed Terminals (Mates with MP 12052644)

• Connector Series: Metri-Pack 150

• Thread Size: 9/16-18

• Hex Size: 7/8"

• Voltage Rating: 5.0 - 24.0 VDC

• Operating Temp: -40°F to +250°F (-40°C to +121°C)

• Cycle Life: 500,000 Electrical / 1,000,000 Mechanical

• Design: Encapsulated with O-ring seal for superior environmental resistance.