When your diesel tractor acts up on cold mornings and refuses to start after the heater plugs finish their cycle, a faulty heater plug switch is often the culprit keeping you from getting to work. This heavy-duty switch controls the electrical circuit that sends power to your tractor’s heater plugs, and when it fails, your engine loses the pre-heating it needs for reliable cold-weather starting. No point cranking the engine endlessly when the plugs aren’t getting the juice they need to warm those combustion chambers.
What You’re Getting
- 24-volt, 100-amp rating handles the high current load of multiple heater plugs without overheating
- Robust construction designed for the electrical demands of diesel engine heater systems
- Reliable switching mechanism that provides positive on/off control for heater plug circuits
- Direct replacement for original equipment in Ursus and Zetor diesel tractors
Built for Real Farm Work
This switch is engineered for Ursus tractors like the C-330 and various Zetor models that depend on heater plugs for cold-weather starting. Whether you’re running these tractors for hay production, feeding livestock, or general farm work, reliable starting in cold weather is essential when chores can’t wait for warmer temperatures. These European-built tractors are workhorses, but they need their electrical systems functioning properly to earn their keep.
Made to Last
Farm electrical components take a beating from vibration, temperature swings, and the high current loads of starter and heater systems. This switch uses heavy-duty contacts rated to handle the significant electrical load of heater plug circuits without burning out or developing the high resistance that causes poor heater plug performance.
Good to Know
Installation typically involves replacing the existing heater plug switch in your tractor’s electrical panel. Always disconnect the battery before working on electrical components, and make sure the new switch is properly grounded. If your heater plugs still don’t work after replacing the switch, check the plugs themselves and the wiring harness for damage or corrosion.
