The Husqvarna 586991801 Contactor is a genuine OEM electrical component designed for Husqvarna and HTC floor grinders, including the HTC510, HTC450, HTC280, PG280, PG450, PG510I, and PG510. As a direct OEM replacement, this contactor is manufactured to Husqvarna's exact specifications, ensuring correct electrical ratings and a proper drop-in installation with no adaptation required. Cross-reference part number 586991801 against your parts diagram to confirm fitment before ordering. DHS Equipment supplies this part to help keep your floor grinder operating at full capacity.
Key Features
- OEM-Spec Electrical Rating — Manufactured to Husqvarna's exact voltage and current specifications, ensuring the contactor switches motor load reliably without risk of undersized or oversized contact ratings.
- Direct Drop-In Replacement — Matches the original mounting configuration and terminal layout, allowing straightforward installation into the machine's electrical panel without rewiring or modification.
- Broad Floor Grinder Compatibility — Fits multiple Husqvarna and HTC floor grinder models including the HTC510, HTC450, HTC280, PG280, PG450, PG510, and PG510I.
- Restored Motor Control Performance — A functioning contactor delivers clean, consistent power switching to the grinder's drive motor; a failed or pitted contactor causes erratic startups, motor stalls, or complete loss of drive power.
- Electrical Safety Compliance — Using a correctly rated OEM contactor maintains the integrity of the machine's electrical control circuit, reducing the risk of arcing, overheating, or nuisance tripping under full grinding loads.
The contactor is an electromechanical switch inside the floor grinder's control circuit that connects and disconnects power to the drive motor each time the machine is started or stopped. It handles the high-current switching that would quickly damage a standard relay or toggle switch, making it a critical component for safe and repeatable motor operation. When the contactor's contacts wear, burn, or weld together, the grinder may fail to start, start intermittently, or in some cases fail to shut off — all conditions that point to contactor replacement as the immediate corrective action.
Part Details
| Part Number | 586991801 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Contactor |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Grinder | HTC510 |
| Floor Grinder | PG280 |
| Floor Grinder | PG450 |
| Floor Grinder | PG510I |
| Floor Grinder | PG510 |
| Floor Grinder | HTC450 |
| Floor Grinder | HTC280 |
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.
