PRESSURE SWITCH

The Pollak 52-104 (also sold as 52-104EP or 52-104P) is a high-performance hydraulic stoplight switch engineered for precision and durability. Designed primarily for heavy-duty trucking, agricultural, and construction equipment, this switch activates brake lights or auxiliary systems when hydraulic pressure reaches a specific threshold. With a robust metal construction and 100% factory testing, it provides the reliability needed for critical safety systems.

Key Features & Benefits

• Precise Pressure Sensing: Calibrated for a 60-100 PSI operating range, making it ideal for hydraulic braking systems that require consistent "on/off" performance.

• Normally Open (N.O.) Circuitry: The switch remains open until the hydraulic pressure reaches the trigger point, completing the circuit to activate lights or signals.

• Superior Conductivity: Features copper alloy conductors that ensure maximum electrical flow with minimal resistive loss.

• Built to Last: The die-cast metal housing is designed to withstand the harsh environments of engine compartments and chassis mounting, resisting vibration and corrosion.

• Easy Installation: Equipped with two male bullet-style terminals for quick, secure wiring connections.

Technical Specifications

• Part Number: 52-104 / 52-104EP / 52-104P

• Function: Hydraulic Stoplight Switch

• Circuitry: Normally Open (N.O.)

• Pressure Rating: 60-100 PSI

• Terminals: 2 Male Bullet Terminals

• Thread Size: 1/8" - 27 NPT

• Housing Material: Metal / Copper Alloy Conductors

• Compatibility: 6V, 12V, and 24V DC Systems