Pollak 21-361 Precision Ball Switch – Normally Open (N.O.) with Exposed Stud Terminals

Rugged Reliability for Critical Vehicle Functions

The Pollak 21-361 is a high-precision, momentary ball switch designed for the toughest automotive and industrial environments. This Single Pole, Single Throw (SPST) switch is Normally Open (N.O.), completing the electrical circuit only when the ball is depressed. It is the go-to solution for manufacturers and fleet mechanics who require a reliable trigger for backup lights, neutral safety starts, or equipment indicators.

Superior Connection Design What sets the 21-361 apart is its exposed stud terminals. Unlike recessed or blade-style connectors, these threaded studs allow for a secure, bolted connection using ring terminals. This ensures that even under high vibration or heavy off-road use, your wiring remains firmly attached, preventing flickering signals or circuit failure.

Built for the Long Haul Constructed with a heavy-duty metal housing and a precision-ground ball, this switch is engineered to withstand moisture, grease, and road debris. Its robust design ensures a long service life, even in safety-critical applications like transmission gear sensing and PTO engagement.

Key Features:

• Momentary Action: Normally Open (N.O.) configuration—circuit closes upon ball depression.

• Exposed Stud Terminals: Threaded studs provide a high-vibration resistant connection point.

• Heavy-Duty Construction: Zinc-plated metal body resists corrosion and physical impact.

• Precision Ball Actuator: Smooth operation with tight tolerances for accurate switching.

• Broad Application: Compatible with both 12V and 24V DC electrical systems.

Common Applications:

• Backup/Reverse Light Activation

• Neutral Safety Start Circuits

• Power Take-Off (PTO) Engagement

• Transmission Position Sensing

• Heavy-Duty Door or Compartment Lighting