CATEngine Parts

241-4620 Electric Power Varistor — Cat C13 C15

This electric power varistor is a crucial surge protection device within the generator's electrical system, designed to safeguard sensitive components from voltage spikes. It is manufactured to meet rigorous CAT standards, offering reliable protection against transient overvoltages that can damage circuitry. Operators may not observe direct symptoms until a significant voltage surge occurs, at which point unprotected components could fail, leading to generator malfunction.

Electric Power Varistor – Part No 241-4620 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeVoltage Varistor
MaterialMetal Oxide Semiconductor
ApplicationGenerator electrical protection
Service LifeDesigned for the life of the generator, replace if surge event detected
CompatibilityCAT C13, C15, C9 Engines, SR4B, XQ570 Generators
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing varistor may not exhibit obvious symptoms until it has absorbed multiple voltage surges or experienced a significant event. If the varistor fails to protect the system, operators might notice intermittent electrical faults or the failure of sensitive electronic control modules. The ultimate consequence of a failed varistor is the potential for costly damage to the generator's control systems.

Installation Tip

Ensure the generator is completely de-energized and all capacitors are discharged before attempting to replace the varistor. Avoid overtightening the mounting hardware, which can stress the varistor's housing.

Service Note

After replacing the varistor, it is advisable to test the generator's electrical system for proper voltage regulation and transient suppression.