The Husqvarna 579276201 Overload 220V 1Ph Pg280 is a genuine OEM overload protection component designed for Husqvarna and HTC floor grinders, including the PG280, PG400, PG400II, PG400III, PG400IV, PG510, PG510I, HTC280, HTC450, HTC510, PG450, and PG450II. This component delivers the correct single-phase, 220V trip rating specified for these machines, ensuring the electrical protection system performs exactly as Husqvarna engineered it. As a genuine OEM part, it matches the original component in both form and electrical specification, so installation is straightforward with no adaptation needed. DHS Equipment supplies this part to help keep your floor grinding equipment operating at full capacity.
Key Features
- Correct Electrical Rating — Matched to the 220V single-phase specification of these floor grinders, ensuring the overload trips at the right current threshold — not too early, not too late.
- Genuine OEM Component — Sourced directly from Husqvarna, this part meets the same electrical and mechanical standards as the original unit installed at the factory.
- Direct Drop-In Replacement — Engineered to fit the existing mounting and terminal configuration on compatible PG and HTC floor grinders, replacing the original without rewiring or bracket modification.
- Broad Floor Grinder Compatibility — Fits a wide range of Husqvarna and HTC planetary floor grinders, including the PG280, PG400 series, PG450 series, PG510 series, HTC280, HTC450, and HTC510.
- Motor Protection Restored — A functioning overload component prevents sustained overcurrent from burning out the drive motor. A failed or incorrect unit puts the motor at risk of thermal damage during heavy grinding passes.
- Electrical Safety Compliance — Replacing a worn or tripped overload with the correct OEM-rated component maintains the machine's designed level of electrical protection for the operator and the equipment.
An overload relay or protector monitors the current drawn by the grinder's motor during operation. When the motor pulls more current than its rated threshold — due to a stall, overload, or fault condition — the overload component trips and interrupts the circuit before heat can damage the motor windings. On 220V single-phase machines like the PG280 and PG400 series, the trip rating must match the motor's full-load amperage precisely; a component rated too high will fail to protect the motor, while one rated too low will cause nuisance tripping during normal operation. Replacing a failed overload with the correct Husqvarna 579276201 unit restores full motor protection and keeps the grinder running safely through demanding floor prep work.
Part Details
| Part Number | 579276201 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Overload 220V 1Ph Pg280 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Grinder | PG280 |
| Floor Grinder | PG400 |
| Floor Grinder | PG400II |
| Floor Grinder | PG400III |
| Floor Grinder | PG400IV |
| Floor Grinder | HTC510 |
| Floor Grinder | PG510 |
| Floor Grinder | PG510I |
| Floor Grinder | HTC280 |
| Floor Grinder | HTC450 |
| Floor Grinder | PG450 |
| Floor Grinder | PG450II |
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.
