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 diesel air heater configurations. As a direct factory replacement, this part ensures the electrical protection system in your heater operates exactly as engineered. Sourced directly from Wacker Neuson, part is built to the same specification as the original unit installed at the factory. Compatible across multiple HI 770 XHD configurations and machine numbers, this circuit breaker is a straightforward, drop-in replacement that keeps your heating equipment running safely and reliably on the jobsite.
Key Features
- Genuine OEM Overcurrent Protection: — Factory-spec trip rating ensures the circuit breaks at the correct amperage threshold, protecting the heater's wiring and electrical components from damage caused by overloads or shorts.
- Direct-Fit Replacement: — Matches the original mounting configuration and electrical connections of the HI 770 XHD heater platform, allowing for straightforward installation without modification.
- Broad HI 770 XHD Compatibility: — Fits multiple HI 770 XHD indirect air heater builds, including Arctic Bear XHD, Arctic Bear XHD NS, and Extra Heavy Duty diesel configurations.
- Protects Critical Heater Systems: — A functioning circuit breaker is the last line of defense for the heater's electrical system; a failed or undersized breaker can allow wiring damage or component failure that takes the entire unit offline.
- Electrical Safety Compliance: — Using the correct OEM-rated circuit breaker ensures the heater's protection circuit performs within its designed safety parameters, particularly important in high-demand diesel heating applications on construction sites.
A circuit breaker is an automatic electrical safety switch that interrupts power flow when current exceeds a safe level, protecting the heater's wiring harness and downstream electrical components from overload damage. In an indirect-fired diesel air heater like the HI 770 XHD, the circuit breaker safeguards the control board, burner ignition system, and blower motor circuitry during operation. When a circuit breaker fails — whether it trips permanently, fails to trip, or loses its rated capacity — the heater may shut down unexpectedly or, worse, leave sensitive electrical components exposed to damaging current spikes.
Part Details
| Part Number | 5000166777 |
|---|---|
| Old Part Number | 0166777 |
| 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.
