The Wacker Neuson Circuit Breaker is a genuine OEM electrical protection component designed for the HI 770 XHD series indirect-fired diesel air heaters, including Arctic Bear XHD configurations. Sourced directly from Wacker Neuson, this circuit breaker meets the exact electrical specifications required by these heavy-duty heating units. It fits the full range of HI 770 XHD variants — from the 2x12 and 1x16 duct configurations to the 1x20 and Extra Heavy Duty models — making it the correct choice for operators maintaining any machine in this series. When your heater's electrical system needs protection you can count on, part number is the OEM answer.
Key Features
- Correct Trip Rating for HI 770 XHD Heaters — Matched to the exact amperage and voltage demands of this diesel indirect-fired heater series, ensuring the breaker trips when it should and holds when it should.
- Drop-In Electrical Replacement — Engineered to connect directly into the existing circuit breaker position without modification to the wiring harness or mounting bracket.
- Broad HI 770 XHD Coverage — Confirmed fitment across Arctic Bear XHD, HI 770 XHD 2x12, 1x16, 1x20, and Extra Heavy Duty variants — one part number covers the full model range.
- Protects Downstream Electrical Components — A functioning circuit breaker prevents overloads from reaching sensitive controls and ignition components; a failed or bypassed breaker puts the entire electrical system at risk.
- Electrical Safety Compliance — On heating equipment operating in enclosed or semi-enclosed job environments, correct overcurrent protection is a safety-critical requirement — only a properly rated OEM breaker fulfills this role.
- Genuine OEM Part — Supplied as an authentic Wacker Neuson component, built to the same specification as the breaker installed on the production line.
A circuit breaker is the electrical system's first line of defense against overcurrent events. In a diesel indirect-fired air heater like the HI 770 XHD, it monitors the current flowing through the control and ignition circuits and trips automatically if current exceeds a safe threshold — cutting power before wiring, controls, or ignition components can be damaged. When a circuit breaker weakens or fails, it may trip unexpectedly under normal load, causing nuisance shutdowns, or it may fail to trip under a true fault condition, leaving the heater's electrical components exposed to damaging current. Replacing it with the correct OEM-rated part restores reliable overcurrent protection and keeps the heater operating safely in demanding cold-weather applications.
Part Details
| Part Number | 5000166770 |
|---|---|
| Old Part Number | 0166770 |
| 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 |
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.
