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On-On SPDT Heavy Duty Toggle w/ Screw Terminals

SW279

$4.29

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This On-On SPDT heavy-duty toggle switch features a 10A @ 277V AC and 20A @ 125V AC rating with brass screw terminals and a steel frame with zinc chromate support. It offers latching in all three positions and a 1/2" mounting hole diameter, housed in black phenolic plastic rated UL 94V-1.

  • Circuitry: Single Pole Double Throw (SPDT)
  • Actuation: ON - ON (Maintained)
  • Electrical Ratings: 10A @ 250V AC, 20A @ 125V AC, 21A @ 14V DC, 3/4 HP 125-250V AC
  • Terminal Type: Screw Terminals
  • Operating Temperature: 0°F to 150°F (-17.8°C to +65.6°C)

Marine and Automotive Systems

With its high 21A rating at 14V DC, this switch is ideal for 12-volt marine and automotive electrical systems. It is commonly used for controlling lighting circuits, bilge pumps, auxiliary fans, and aftermarket accessories in trucks, buses, and watercraft. The robust brass and nickel plating provides excellent resistance to corrosion in these environments.

Industrial Controls and Machinery

The switch's AC ratings (up to 20A at 125V AC) and 3/4 HP motor rating allow it to be utilized in industrial control panels, factory automation equipment, and commercial generators. The slow-make, slow-break contact mechanism is particularly well-suited for handling the inrush currents associated with AC motors and heavy inductive loads.

Commercial and Emergency Equipment

Due to its long mechanical life of 100,000 cycles and durable phenolic casing, the switch is frequently specified for commercial food service equipment, office automation machines, and emergency lighting systems where reliability and safety are paramount.

UL 94 Flame Class 94V-2 (case material flammability rating)

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