BOX-RELAY & TRANSFORMER 3728298 - Caterpillar

Replace circuit breakers with the same type and size only. Otherwise, electrical damage can result.If it is necessary to reset circuit breakers frequently, an electrical problem may exist. Contact your Caterpillar dealer.
The circuit breaker panel is located in the cab, below and to the left of the dash panel. The circuit breakers protect the electrical system from damage caused by circuit overload.
Circuit Breakers - Push in the button to reset the circuit breaker. If the electrical system is working properly, the button will remain depressed. If the button does not remain depressed, check the appropriate electrical circuit. Repair the electrical circuit, if necessary.
Illustration 1 g00900212
Circuit breaker panel
Illustration 2 g00903578
Circuit breaker panel (1) 30 amp (Automatic) - Left head light (low beam and high beam), right head light (high beam). (2) 30 amp (Automatic) - Right head light (low beam)/tail lights, dash lamps. (3) 15 amp - Idle timer/fire suppression control, Engine ECM, engine start switch. (4) 15 amp - Horn, turn indicators, dome lamp, cassette, payload system, accessories. (5) 15 amp - Transmission oil filter bypass indicator, backup alarm. (6) 15 amp - Block light, rear cab flood light, dash lamps, tail/park lamps. (7) 15 amp - Front/rear window wiper/washers. (8) 30 amp - Air conditioning system. (9) 15 amp - Automatic lubrication system, air seat. (10) 15 amp - Caterpillar Monitoring System, retarder indicator, body up indicator, fuel level sensor, body position sensor. (11) 15 amp - Service port, Engine ECM. (12) 15 amp - Transmission oil pressure sensor, transmission gear position sensor, retarder position sensor, shift lever position sensor, hoist control position sensor, Power Train/Chassis ECM. (13) 15 amp - Payload system. (14) 15 amp - Cassette, payload system, camera monitor, accessories, residual brake oil indicator/stop lights.
Illustration 3 g00903889
(15) 105 amp - alternator circuit breaker.
Illustration 4 g00903891
(16) 80 amp - main supply to circuit breaker panel.The circuit breakers prevent circuit overload. Each circuit breaker has a specified current rating, depending on the system requirements. If an overload occurs on a system, the circuit breaker element will separate, power will not be supplied to the system until the circuit breaker has been reset. If the circuit breaker element separates again a fault is present in the related electrical system.