CATEngine Parts

139-4724 30A Breaker Assembly Circuit — Cat

This is a 30A circuit breaker assembly designed to protect electrical systems from overcurrents and short circuits. It meets stringent OEM standards for reliable operation, ensuring it performs comparably to a new factory unit and is superior to a worn or damaged breaker. Operators may notice intermittent power loss, flickering lights, or the inability to start the equipment if this breaker fails.

30A Breaker Assembly Circuit – Part No 139-4724 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

Related CAT Parts

From the same category — may also be needed

1878969
Camshaft Bushing
1032858
Ring-Set (Os=.25Mm)
227-4239
6 Pcs Fuel Injector Sleeve
1746102
Body As-Piston
375-0740-375-0741
Arm Cylinder Seal Kit
1752841
Cabin Air Filter

Browse all CAT Engine Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 TypeCircuit Breaker Assembly
MaterialHigh-impact plastic, metal contacts
ApplicationElectrical system protection
Service LifeReplace as needed based on electrical load and fault history
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

An initial sign of failure may be the breaker tripping unexpectedly under normal load. If ignored, intermittent electrical faults can become more frequent, leading to unreliable operation of connected systems. Eventually, the breaker may fail to trip, leaving the electrical system vulnerable to damage from overcurrents.

Installation Tip

Ensure the main power supply to the breaker is completely disconnected before removal and installation. Avoid overtightening the terminal connections, as this can damage the breaker's internal components.

Service Note

Inspect associated wiring and connectors for any signs of corrosion, melting, or loose connections.