Pollak 52-337 Continuous Duty Solenoid Switch with Internal Diode – 12V, 100A, SPST

The Pollak 52-337 Continuous Duty Solenoid is a premium 12-volt relay designed for applications that require constant power delivery over long periods. Unlike intermittent solenoids, the 52-337 is engineered to remain "On" indefinitely without overheating, making it the perfect choice for dual battery systems, lift gates, and auxiliary power circuits in heavy-duty trucks and industrial equipment.

The standout feature of the Pollak 52-337 is its integrated internal diode. This diode absorbs reverse voltage spikes (inductive kickback) that occur when the solenoid is deactivated. By suppressing these spikes, the 52-337 protects sensitive vehicle electronics and prevents premature wear on your switch contacts, ensuring a longer life for your entire electrical system.

• Continuous Duty Rating: Engineered for 100% duty cycles—stays on as long as you need it.

• Internal Diode Protection: Safely manages voltage spikes to protect onboard computers and sensitive electrical components.

• Heavy-Duty Capacity: Rated for 100 Amps continuous carry and a massive 600 Amp in-rush.

• Rugged Steel Housing: Plated steel "Short Case" design provides excellent durability and resistance to harsh under-hood conditions.

• Normally Open (N.O.): SPST circuitry ensures safe, reliable "Off-On" operation.