Pollak 21-532 Precision Ball Switch – Normally Open (NO), Sealed Terminals (Fits WP 12015792)

OEM-Quality Precision for Weatherproof Performance

The Pollak 21-532 Precision Ball Switch is a heavy-duty sensing solution engineered for maximum reliability in the most demanding automotive and industrial environments. This Normally Open (NO) switch is designed to activate electrical circuits upon ball compression, providing the accuracy required for modern vehicle safety and operational systems.

Superior Environmental Protection Built to survive where other switches fail, the 21-532 features sealed terminals and an integrated O-ring seal. This design offers a completely watertight and dust-proof interface, protecting the electrical contacts from corrosive road salt, moisture, and grime. It is specifically designed to mate with the Packard Weather Pack (WP 12015792) connector, ensuring a secure, factory-standard connection that won't vibrate loose.

Industrial-Grade Durability Constructed with a cold-rolled steel body and a protective zinc-plated chromate finish, this switch is built for long-term service. Whether it is used for back-up lamp switching, neutral sensing, or PTO interlock, the 21-532 performs consistently in extreme temperatures ranging from -40°F to +250°F.

Key Specifications:

• Circuitry: Normally Open (NO)

• Termination: Sealed Terminals (Mates with WP 12015792)

• Connector Series: Packard Weather Pack

• 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

• Construction: Zinc-plated steel with O-ring for environmental resistance.