241-8368 switch assembly 139-4724 breaker CAT bulldozer parts

241-8368 switch assembly 139-4724 breaker CAT bulldozer parts

The CAT 241-8368 switch assembly and 139-4724 circuit breaker are core circuit control and protection components of the Caterpillar bulldozer’s electrical control system. Strictly adhering to Caterpillar’s original equipment manufacturing standards and design tolerances, they are specifically designed for the heavy-duty, dusty, and high-vibration operating conditions of Caterpillar bulldozers. Working together, they achieve precise control and overload protection of the equipment’s circuitry, effectively preventing equipment downtime or component damage caused by circuit faults. They are the preferred original equipment manufacturer (OEM) parts for the repair, maintenance, and replacement of Caterpillar bulldozer electrical control systems, and are widely applicable to various harsh operating scenarios such as mining, infrastructure construction, and earthmoving projects.

The 241-8368 switch assembly, as the “control center” of the bulldozer’s electrical system, undertakes core tasks such as controlling the on/off state of key equipment functions and switching modes, encompassing the precise execution of operating commands such as power output and auxiliary device start/stop. The accessories utilize Caterpillar-specific high-conductivity silver alloy contacts, with a switching response speed of ≤5ms and a contact resistance of <0.01Ω, ensuring stable and lossless circuit transmission. The housing is made of high-strength flame-retardant engineering plastic with a wear-resistant and oil-resistant surface treatment, achieving an IP65 protection rating. It can withstand extreme temperatures from -30℃ to 120℃, strong vibrations, and dust and oil contamination, effectively resisting moisture and short-circuit risks. It adopts the original factory standard snap-fit ​​installation design, with anti-oxidation gold-plated terminals. The mounting holes perfectly match the original factory layout, allowing for direct plug-and-play adaptation without additional adjustments, significantly improving maintenance and replacement efficiency.

The 139-4724 breaker acts as a “safety barrier” for the bulldozer’s electrical system, focusing on rapid protection against abnormal conditions such as circuit overload and short circuits. When the circuit current exceeds the rated value, it can automatically disconnect within 0.1 seconds, cutting off the faulty circuit and preventing damage to core components such as the control module and motor due to overcurrent. The circuit breaker employs a dual protection structure of electromagnetic and thermal tripping, with a tripping accuracy error of ≤±5%. Its rated voltage and current fully match the original Caterpillar bulldozer circuit parameters. The casing is made of high-temperature resistant and flame-retardant material, and the internal arc-extinguishing design quickly extinguishes any arc generated during disconnection, ensuring operational safety. It also adheres to original factory installation dimensions, with a secure and reliable bolt fixing method, seamlessly integrating with the 241-8368 switch assembly to ensure a closed-loop control and protection system, providing a robust safety barrier for stable equipment operation.

Both accessories have passed Caterpillar’s original QAP quality certification and have undergone rigorous performance tests including high-temperature resistance, vibration resistance, fatigue resistance, and corrosion resistance. Their quality is completely consistent with original factory parts, allowing direct replacement of original components without additional modification or circuit matching, effectively reducing equipment downtime for maintenance. Whether for routine maintenance, system upkeep, or emergency fault replacement, the CAT 241-8368 switch assembly and 139-4724 circuit breaker perfectly match the operational requirements of Caterpillar bulldozer electrical control systems, reducing long-term equipment operation and maintenance costs, ensuring continuous and stable operation of bulldozers in various heavy-duty tasks, and are suitable for all Caterpillar bulldozer models.

Core Technical Parameters

Compatible Models: Caterpillar bulldozers of all series

241-8368 Switch Assembly: Contact material silver alloy, response speed ≤5ms, contact resistance <0.01Ω, operating temperature -30℃~120℃, protection rating IP65, rated voltage DC12~24V

139-4724 Circuit Breaker: Tripping accuracy error ≤±5%, breaking response time ≤0.1 seconds, protection rating IP65, rated current compatible with original circuit standards, enclosure flame retardant rating V0

Quality Standards: Complies with Caterpillar original quality specifications, passes vibration resistance 12g@10~1500HZ cycle test, salt spray resistance 480 Hourly Testing

Core Advantages

Original factory precise fit, direct replacement without modification; sensitive and stable switching, rapid protection response; high temperature and vibration resistance, strong adaptability to working conditions; waterproof, oil-proof, and corrosion-resistant, long service life; dual safety protection, reducing the risk of failure; convenient and efficient installation, controllable maintenance costs.

Get a personalized quote now

251-9905 Bearing – Sleeve (Ebar Center Pin)
381-2491 Fan As
3E5239 Relay As
441-3637 Relay As
528-3183 Switch As
241-8368 Switch As – Main Relay
139-4724 Breaker
333-8538 Sensor As – Inclination
586-1837 Panel As – Switch
528-7903 Harness As – Dash
584-5632 Display Gp – Front Touchscreen
487-6570 Switch As – Module
344-7391 Sensor – Pressure
256-6453 Sensor – Temperature
367-9098 Sensor Gp – Pressure (AC)
367-9097 Sensor Gp – Pressure (AC)
3E7891 Switch As – Pressure
344-7389 Sensor Gp – Pressure
430-9456 Sensor Gp – Level
358-2399 Sensor – Speed
174-7875 Horn As – 24V
163-1201 Horn As – 24V
541-6340 Lamp As – LED Underhood
320-3063 Sensor – Pressure
256-6453 Sensor – Temperature
430-9453 Sensor – Coolant Level
213-9100 Alarm – Backup
490-0579 Adapter – 2 Wire Ethernet
490-0588 Nut – Panel
110-2656 Drive Gp-Final
124-2375 Seal – Lip (Axle Seal)
124-2074 Coupling – Permanent – PT Oil Cooler Front
124-2090 Coupling – Permanent – PT Oil Cooler Rear Right
201-0968 Coupling – Permanent – Pt Oil Cooler Rear Left
432-2074 Coupling – Permanent – TC Oil Filter Bottom of TC
432-2087 Coupling – Permanent – TC Oil Filter Gear Pump

*For other spare parts procurement needs, please contact us!