Pollak 52-623 Extra-Long Plunger Door Jamb Switch – Normally On (Mom. Off) – High-Impact Nylon

The Ultimate Long-Reach Door Switch for Specialized Cabs

The Pollak 52-623 Door Jamb Switch is engineered for maximum versatility in heavy-duty trucks, trailers, and utility vehicles. Featuring an industry-leading 1-3/8" extended plunger, this switch is designed to bridge larger gaps, making it the perfect solution for thick-walled refrigerated units, custom toolboxes, and deep-set cab doors where standard switches fail to make contact.

Corrosion-Proof & Durable Performance

Unlike metal-bodied switches, the 52-623 features a high-impact nylon housing. This construction offers superior resistance to moisture, salt, and road chemicals, ensuring the internal components remain protected in harsh environments. The "Normally On" (Momentary Off) circuitry provides reliable automatic control for interior lighting, "door ajar" alarms, and cargo area illumination.

Key Features:

• Extra-Long Plunger: 1-3/8" extended length with 1" of travel for maximum reach.

• Non-Corrosive Housing: High-impact nylon body for longevity in wet or salty conditions.

• Circuitry: SPST Normally On (Momentary Off)—the circuit breaks when the plunger is depressed.

• Heavy-Duty Rating: Rated for 15 Amps at 12V DC.

• Secure Terminals: (2) #8-32 screw terminals for a permanent, vibration-proof connection.

Specifications:

• Part Number: 52-623 (Bulk) / 52-623P (Packaged)

• Rating: 15 Amps @ 12V DC

• Mounting Stem: 1/2" Long, 7/16" Diameter

• Plunger Length: 1-3/8" Extended

• Housing Material: High-Impact Nylon