Wacker Neuson 5200014542 Relay DPDT 8 Pin 10A 24VDC

The Wacker Neuson Relay DPDT 8 Pin 10A 24VDC is a genuine OEM component designed for the HI 770 XHD Indirect Air Heater series, including Arctic Bear XHD and Arctic Bear XHD NS configurations. As a factory-sourced part, the is built to the exact electrical specifications required by these diesel indirect heaters — no guesswork on voltage rating, contact arrangement, or pin configuration. It fits directly into the existing socket on compatible HI770XHD models, restoring proper control circuit operation without adaptation. If your heater is failing to cycle correctly or losing control circuit continuity, this relay is a common and straightforward service item to address.

Key Features

• Matched Electrical Specification — Rated at 10A with a 24VDC coil voltage, this relay meets the precise switching requirements of the HI 770 XHD control circuit — no substituting with off-spec alternatives.
• DPDT 8-Pin Configuration — Double-pole double-throw design with an 8-pin base drops directly into the existing relay socket, maintaining correct circuit routing for both switched legs.
• Genuine OEM Sourcing — Supplied by Wacker Neuson as an authorized replacement, ensuring the part carries the correct part number, coil rating, and contact capacity for these heaters.
• Broad HI 770 XHD Coverage — Compatible across multiple HI770XHD build configurations, including Arctic Bear XHD, Arctic Bear XHD NS, and Extra Heavy Duty Air Heater variants.
• Restores Reliable Heater Cycling — A failed relay in this position can cause the heater to fail to start, shut down unexpectedly, or lose control over combustion sequencing — replacing it returns the unit to normal operation.
• Electrical Safety Compliance — Using the correct OEM-rated relay ensures the control circuit operates within designed load limits, reducing the risk of overheating or contact failure in a fuel-burning heater application.

A double-pole double-throw (DPDT) relay acts as an electrically controlled switch within the heater's control circuit, using a 24VDC signal to open or close two independent sets of contacts simultaneously. In an indirect air heater like the HI 770 XHD, relays like this one manage sequencing functions such as ignition control, blower activation, or fuel system switching — tasks where the control board needs to switch higher-current loads safely. When a relay fails, the contacts may weld shut, fail to close, or become intermittent, causing symptoms like no-start conditions, mid-cycle shutdowns, or erratic heater behavior. Replacing the relay with a correctly rated OEM unit restores predictable control circuit performance.

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.

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