VolvoElectrical Parts

3987034 — Battery Main Switch 3987034 For Volvo Loader L120E L150E L180E Truck A25D A30D Excavator Ec280 Ec340

This is a high-quality Battery Main Switch designed to disconnect the main power supply to the vehicle's electrical system, essential for safety during maintenance or storage. Manufactured to meet rigorous OEM standards, it offers reliable performance and durability compared to a worn switch that may fail to disconnect power or become difficult to operate. Operators may experience issues with the vehicle not starting, intermittent power loss, or the inability to safely shut down electrical systems when this switch is faulty.

Battery Main Switch 3987034 For Volvo Loader L120E L150E L180E Truck A25D A30D Excavator Ec280 Ec340 – Part No 3987034 – Volvo Spare Part
Part Specifications
BrandVolvo
CategoryElectrical 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.

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

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Installation & Application Notes

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeBattery Disconnect Switch
MaterialHeavy-duty plastic and metal contacts
ApplicationMain electrical system power cutoff
Service LifeReplace every 5,000 hrs or 5 years
CompatibilityVolvo specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Difficulty in turning off the vehicle's electrical system or the inability to start the engine are early indicators of a failing battery main switch. If ignored, the switch may fail to disconnect power, leading to battery drain or electrical system malfunctions. A completely failed switch can prevent safe servicing of the vehicle's electrical components.

Installation Tip

Ensure the battery terminals are clean and free of corrosion before connecting the new switch. Avoid applying excessive force when turning the switch to prevent damage to the internal mechanism.

Service Note

Inspect the battery terminals and cables for corrosion or damage when replacing the battery main switch.