The Wacker Neuson Circuit Breaker is a genuine OEM component designed for the HI 770 XHD Indirect Air Heater series, including Arctic Bear XHD and Extra Heavy Duty configurations. As a direct factory replacement, this circuit breaker matches the original electrical specifications of your machine, ensuring a straight swap with no guesswork on compatibility. It fits multiple HI 770 XHD configurations across diesel-powered indirect heater builds including 1x16, 1x20, and 2x12 duct arrangements. Keep part number on hand as a service spare to avoid unnecessary heater downtime on cold-weather jobsites.
Key Features
- Correct Trip Rating for HI Heater Electrical Systems — Matched to the OEM-specified current rating for the HI 770 XHD, preventing nuisance trips or under-protection of downstream circuits.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, this circuit breaker meets the exact electrical tolerances required by the HI 770 XHD platform.
- Direct Drop-In Replacement — Engineered to install in the same mounting position as the original, with matching terminal connections for a clean, secure fit.
- Broad HI 770 XHD Coverage — Compatible across Arctic Bear XHD, Arctic Bear XHD NS, and Extra Heavy Duty Air Heater variants in multiple duct configurations.
- Electrical System Protection — A functioning circuit breaker safeguards the heater's wiring and control components from overload; a failed or bypassed breaker puts the entire electrical system at risk.
- Critical Safety Component — As the primary overcurrent protection device on the heater, using the correct OEM-rated breaker is essential for safe operation in demanding cold-weather environments.
The circuit breaker on the Wacker Neuson HI 770 XHD Indirect Air Heater acts as the electrical system's first line of defense against overcurrent events. When current draw exceeds the rated threshold — whether from a wiring fault, a failing component, or a sudden load spike — the breaker trips and isolates the circuit before damage can occur. A worn, weakened, or incorrect breaker may fail to trip at the right point, leaving heater controls, burner components, and wiring harnesses exposed to damaging current levels and creating a potential fire hazard on site.
Part Details
| Part Number | 5000166783 |
|---|---|
| Old Part Number | 0166783 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Circuit Breaker |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 770 XHD Indirect Air Heater, Diesel, 2x12 | Arctic Bear XHD | 5000620676 |
| HI 770 XHD Indirect Air Heater, Diesel, 1x16 | HI770XHD | 5000620183, 5200003814, 5200004934, 5100049894 |
| HI770XHD Indirect Heater | Arctic Bear XHD NS | 5000620690 |
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.
