• 421-S33-3282 421S333282 Switch KOMATSU Wheel Loader Spare Parts For WA150-6 WA200-6

• Specification

• Functions

1.Safety Interlock Control
A primary role is to enforce safety protocols: for example, it may act as an operator presence switch (requiring the operator to be seated and engage the switch before the engine starts or hydraulics activate) or a emergency stop interlock (cutting power to non-essential systems if triggered). This prevents accidental machine activation and reduces injury risks.

2.System Power Regulation
It controls power flow to specific subsystems, such as:
Enabling/disabling auxiliary hydraulic attachments (e.g., breakers, grapplers).
Activating/deactivating comfort features (e.g., cab lights, climate control) without disrupting critical operations.

3.Rugged Environmental Resistance
The IP65 rating and oil-resistant housing protect internal components from dust, mud, water, and hydraulic fluid—common in construction sites. The flame-retardant material also meets safety standards for cab environments.

4.Reliable Electrical Performance
Silver-plated contacts minimize voltage drop and prevent arcing (a common cause of switch failure), ensuring consistent signal transmission even in high-vibration conditions (e.g., during excavator digging or loader bucket operation).

5.Ergonomic Design
The compact size and panel-mount layout fit seamlessly into Komatsu’s operator cab control panels. Push-button or toggle actuation provides clear tactile feedback, so operators can confirm switch activation without visual checks.

• Compatible models

• More other switch parts fit for KOMATSU machine

• Catalog parts list

• We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

• Advantage

1. Offer Top quality & competitive products

2. Support 12-month warranty

3. 100% tested before shipping

4. Delivery in time

5. A wide range of Oil Pressure Sensor, Fuel Tank Level Sensor, Temperature Sensor, Speed Sensor for excavator 

6. More than 15 years production and 11 years foreign trade experience

7. Professional QC team

8. Best sales team, 24 hours service

• Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .