Wacker Neuson 5000166779 Battery Disconnect Switch

The Wacker Neuson is a genuine OEM Battery Disconnect Switch designed for the HI 770 XHD series indirect air heaters. As a direct factory replacement, this switch installs in place of the original with no guesswork — correct connector, correct form factor, correct function. It is compatible across multiple HI 770 XHD configurations including the 2x12, 1x16, and 1x20 duct variants, as well as Arctic Bear XHD and Extra Heavy Duty Air Heater builds. Sourcing the genuine Wacker Neuson means you are getting the exact component specified for these machines, with no compromise on fitment or electrical integrity.

Key Features

• Genuine OEM Electrical Spec: — Manufactured to the original switch rating and terminal configuration, ensuring correct circuit isolation without voltage drop or contact resistance issues.
• Direct-Fit Replacement: — Matches the original mounting position and wiring connections on HI 770 XHD heater models, dropping straight into place during service.
• Broad HI 770 XHD Compatibility: — Verified fitment across Arctic Bear XHD, Arctic Bear XHD NS, and standard HI 770 XHD configurations in multiple duct sizes.
• Maintains Clean Power Shutoff: — A functioning disconnect switch allows a complete and immediate isolation of battery power, protecting heater electronics during service, transport, or storage.
• Electrical Safety Critical: — A failed or corroded disconnect switch can prevent proper power isolation, creating risk during maintenance or in emergency shutoff situations — replace promptly with the correct OEM part.

The battery disconnect switch provides a hard cutoff between the battery and the heater's electrical system. On diesel indirect air heaters like the HI 770 XHD, this switch is used to fully isolate battery power during storage, transport, or servicing — preventing parasitic drain and protecting sensitive control components from unintended electrical activity. When the switch fails or becomes corroded, the operator loses the ability to reliably cut power, which can result in battery drain, difficulty servicing the unit safely, or potential damage to downstream electrical components.

Part Details

Compatibility & Fitment

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.