The 803676157 Heater Toggle Switch is a genuine OEM electrical component manufactured by XCMG for motor graders and heavy construction equipment. This rugged toggle switch controls the cab heating system, allowing operators to turn the heater fan and coolant valve on or off.
Designed to withstand extreme vibration, dust, and temperature fluctuations, the 803676157 switch features a sealed IP67-rated body and a durable metal lever. It directly replaces failed or intermittent heater switches on XCMG GR series graders and compatible machinery.
Each unit is rated for 20A at 24V DC, making it suitable for direct control of heater blower motors and water valves. The two-position (ON-OFF) operation provides simple, reliable climate management in harsh working environments.
| Parameter | Specification |
|---|---|
| OEM Number | 803676157 |
| Brand | XCMG (Genuine Original Equipment) |
| Product Type | Heater Toggle Switch (2-Position ON-OFF) |
| Switch Function | SPST (Single Pole Single Throw) |
| Contact Rating | 20A @ 24V DC (resistive), 15A @ 24V DC (inductive) |
| Terminal Type | 2 x 6.3mm quick-connect (spade terminals) |
| Actuator | Metal toggle lever, bat-style, 12mm height |
| Panel Cutout | 12mm diameter (round), fits standard toggle switch holes |
| Mounting Thread | M12 x 0.75, includes hex nut and lock washer |
| Ingress Protection | IP67 (front panel and body sealed) |
| Operating Temperature | -40°C to +85°C |
| Electrical Life | 50,000 cycles at rated load |
| Mechanical Life | 100,000 cycles |
| Contact Resistance | < 20 mΩ (initial) |
| Insulation Resistance | > 100 MΩ at 500V DC |
| Dielectric Strength | 1500V AC for 1 minute |
| Housing Material | Black nylon 6/6 (UL94 V-0 flame retardant) |
| Lever Material | Nickel-plated brass |
| Sealing Boot Option | Available separately (rubber weather boot) |
| Compatible Models | XCMG GR135, GR165, GR180, GR215, GR260, GR300, GR350 motor graders |
| Certifications | CE, RoHS, ISO 9001:2015 |
The XCMG 803676157 Heater Toggle Switch provides simple ON-OFF control of the cab heating system. When activated, it sends power to the heater blower motor and opens the coolant control valve, allowing warm coolant to flow through the heater core. This ensures operator comfort in cold weather environments.
Unlike cheaper automotive switches, the 803676157 is built for heavy equipment duty cycles. The silver-alloy contacts resist welding and pitting, even when switching inductive loads like blower motors. The internal snap-action mechanism provides positive tactile feedback, confirming the switch state by feel alone.
The switch’s IP67 rating means it is completely dust-tight and can withstand temporary immersion in water. This is essential for graders working in wet conditions, pressure washing, or dusty environments. The sealed body prevents corrosion and ensures long-term reliability.
The 803676157 switch is a direct fit for the factory heater toggle switch on XCMG GR series motor graders. It mounts into a standard 12mm diameter round panel cutout, secured by an M12 threaded bushing and hex nut. The two spade terminals accept 6.3mm quick-connect female terminals.
Installation is simple: disconnect the battery, remove the old switch by unscrewing the retaining nut, pull it out of the panel, and disconnect the wires. Connect the wires to the new 803676157 (polarity insensitive for SPST), push it into the panel, and tighten the nut. Reconnect the battery and test.
Common failure symptoms: heater does not turn on, switch feels loose or gritty, intermittent operation, or melted terminals. Replacing with the genuine XCMG part restores full heater function and eliminates safety hazards caused by arcing or overheating.
XCMG engineers designed the 803676157 switch to survive the intense vibration levels found in motor graders. The internal mechanism uses a stainless steel spring and a hardened steel cam follower, ensuring consistent operation even after thousands of actuations. The terminal connections are reinforced to prevent breakage.
The toggle lever is made of nickel-plated brass, which resists corrosion and wear. The lever boot (available separately) adds an extra layer of sealing for the most extreme conditions. The switch body is molded from UL94 V-0 flame-retardant nylon, preventing fire in case of electrical fault.
XCMG tests each production batch to 20g vibration for 24 hours, followed by thermal shock from -40°C to +85°C for 100 cycles. No contact chatter or mechanical failure is permitted. This ensures the 803676157 will outlast the original equipment.
Aftermarket toggle switches often use thin brass terminals that overheat under continuous load, melting the switch housing. The genuine XCMG switch features solid silver-alloy contacts and heavy-gauge copper terminals rated for 20A continuous. This eliminates the risk of fire or switch failure.
Counterfeit switches may have a lower IP rating (e.g., IP54), allowing dust and moisture to enter, leading to internal corrosion and erratic operation. The 803676157 is fully sealed and tested to IP67 standards. Also, the toggle lever on genuine switches has a precise detent feel, whereas cheap copies feel mushy.
XCMG provides a 12-month warranty against defects. Each switch is laser-etched with the XCMG logo and part number. This supersedes older numbers 803676001, 803676088, and 803676112.
If your heater fails to operate, test the 803676157 switch with a multimeter. With the switch in the OFF position, resistance between terminals should be infinite (open). In the ON position, resistance should be less than 0.5 ohms. Also check for voltage at the switch input (should be battery voltage when ignition is on).
If the switch passes but the heater still does not work, check the blower motor, fuse, and coolant valve. The switch is rarely the cause of failure, but when it does fail, it is usually due to contact erosion from high current. Replace immediately with a genuine 803676157.
For fleet maintenance, consider replacing heater switches every 5,000 operating hours as part of a preventive maintenance program. The low cost of the switch is far less than the cost of a cab disassembly or downtime due to operator discomfort.
The 803676157 Heater Toggle Switch is stocked in XCMG regional warehouses in North America (Houston), Europe (Rotterdam), Middle East (Dubai), and Asia (Shanghai). Standard air freight delivers within 3-7 business days worldwide. Expedited shipping (1-2 days) is available for urgent repairs.
Bulk orders (10+ pieces) receive volume discounts and can be shipped via sea freight. Each switch is individually bagged with desiccant and anti-static protection. For large fleets, consignment stock programs ensure immediate availability.
Don’t let a failed heater switch make your operator miserable in cold weather. Order the genuine XCMG 803676157 today and restore reliable cab heating. Genuine quality, perfect fit, and long service life – designed for the toughest jobsites.
The 803676157 Heater Toggle Switch is a small but critical component for operator comfort and safety. A functioning cab heater reduces fatigue, prevents window fogging, and allows year-round operation. Keep your XCMG motor grader productive with genuine OEM electrical parts.
Upgrade or replace your worn heater switch today. The XCMG 803676157 delivers reliable performance in the harshest environments – from Arctic cold to desert dust. Order now and experience the difference of genuine XCMG engineering.
