The Husqvarna 502543601 Contactor is a genuine OEM electrical component designed for PG680, PG820, PG680RC, and PG820RC floor grinders. As a factory-sourced part, it matches the original electrical ratings and mounting configuration, ensuring the machine's motor control circuit operates exactly as designed. This contactor is the correct replacement for PG680 and PG820 series floor grinders, including the remote-control RC variants. DHS Equipment supplies this part to help keep your equipment running at full capacity.
Key Features
- Matched Electrical Rating — Genuine OEM specification ensures the correct coil voltage, contact capacity, and switching characteristics for Husqvarna floor grinder motor circuits.
- Drop-In Replacement — Engineered to the original mounting footprint and terminal layout, allowing direct installation without modification to the control panel or wiring harness.
- Broad PG Series Compatibility — Confirmed fitment across PG680, PG680RC, PG820, and PG820RC planetary floor grinders, covering both standard and remote-control configurations.
- Restored Motor Control Performance — A functioning contactor delivers clean, reliable switching of the drive motor circuit; a failed unit can cause intermittent starts, motor drop-out, or complete loss of machine operation.
- Electrical Safety Compliance — Using the correct OEM-rated contactor maintains the integrity of the machine's electrical control system, reducing the risk of arcing, overheating, or unintended motor engagement.
The contactor is an electrically operated switch that controls the flow of power to the floor grinder's drive motor. When the operator activates the machine, the contactor closes its contacts to complete the motor circuit; when the machine is switched off, it opens the circuit to cut power. A worn or failed contactor can result in the motor failing to start, running intermittently, or not shutting down correctly — all of which interrupt grinding operations and can pose a safety risk. Replacing a faulty contactor with the correct OEM part restores dependable motor switching and keeps the control system operating within its original design parameters.
Part Details
| Part Number | 502543601 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Contactor |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Grinder | PG680 |
| Floor Grinder | PG820 |
| Floor Grinder | PG820RC |
| Floor Grinder | PG680RC |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
