Pollak 34-578Q Heavy-Duty Toggle Switch – (On)-Off-On DPDT with 6 Quick-Connect Terminals (20 Amp)

Specialized Hybrid Action: Momentary and Maintained Control

The Pollak 34-578Q is a professional-grade Double Pole Double Throw (DPDT) toggle switch designed for unique operational requirements in heavy-duty trucks and industrial machinery. This switch features a specialized (On)-Off-On configuration: one side is Momentary-On (springs back to center), while the other side is Maintained-On (stays in position). This hybrid action is perfect for applications requiring both a temporary "jog" or "override" function and a constant "run" mode.

Fast Installation with Quick-Connect Terminals Equipped with 6 Quick-Connect (QC) blade terminals (.250"), the 34-578Q is designed for high-efficiency builds and easy fleet maintenance. The blade terminals allow for secure, solderless connections, making it an ideal choice for tight dashboard assemblies or rapid field replacements where screw-tightening is impractical.

Engineered for Rugged Performance Built to Pollak’s legendary OEM standards, this switch is designed to withstand the high-vibration and harsh environments of commercial vehicles.

• Dual-Circuit Versatility: The DPDT 6-terminal design allows you to control two independent circuits simultaneously.

• Durable Construction: Features a zinc die-cast housing and a high-impact glass-filled nylon slide for long-term mechanical life.

• Weather Protection: Includes an O-ring seal in the mounting stem to guard internal contacts against moisture and dust.

• Tactile Operation: The standard 11/16" chrome-plated handle provides clear, positive feedback to the operator.

Key Specifications:

• Circuitry: (On)-Off-On (DPDT – 6 Terminals)

• Rating: 20 Amps @ 12VDC (Universal 6V-24V compatibility)

• Terminal Type: 6 x .250" Quick-Connect Male Blades

• Mounting: Standard 15/32" diameter mounting stem (fits 1/2" holes)

• Hardware Included: 1 nickel-plated hex nut and 1 aluminum knurled face nut