The Wacker Neuson Circuit Breaker is a genuine OEM component designed for the HI 770 XHD series indirect-fired air heaters, including Arctic Bear XHD and Extra Heavy Duty Air Heater configurations. Sourced directly from Wacker Neuson, this circuit breaker delivers the correct trip rating and electrical specifications for these diesel-powered units. It fits across multiple HI 770 XHD variants, covering 1x16, 1x20, and 2x12 output configurations. When your heater's electrical protection needs to be restored, part number is the factory-correct answer.
Key Features
- Correct Trip Rating for HI 770 XHD Heaters — Genuine OEM spec ensures the breaker opens at the precise overload threshold these high-output diesel heaters demand, protecting wiring and control components.
- Drop-In Electrical Replacement — Matches the original mounting footprint and terminal connections of the HI 770 XHD electrical panel for a straightforward swap with existing wiring harnesses.
- Broad HI 770 XHD Fitment — Compatible with Arctic Bear XHD, Arctic Bear XHD NS, and Extra Heavy Duty Air Heater variants across multiple machine numbers, covering the full HI 770 XHD production range.
- Electrical Overload Protection — A functioning circuit breaker is the last line of defense between an electrical fault and costly damage to the heater's fuel, ignition, and control systems; a worn or tripped breaker that won't reset puts that protection at risk.
- Critical Safety Component — In diesel indirect-fired heating equipment, proper circuit protection is essential for safe operation in temporary heat applications on construction sites and cold-weather worksites.
A circuit breaker acts as an automatic safety switch within the heater's electrical system. When current draw exceeds a safe threshold — due to a fault, short, or component failure — the breaker trips and interrupts power before wiring or downstream components can be damaged. Unlike a fuse, it can be reset once the fault is cleared, making it a reusable protective device. On the HI 770 XHD, where diesel combustion, fuel delivery, and blower systems all draw from the same electrical circuit, a correctly rated breaker is essential to keeping the unit operating safely and preventing cascading electrical damage.
Part Details
| Part Number | 5000166775 |
|---|---|
| Old Part Number | 0166775 |
| 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.
