The Wacker Neuson Socket Relay, 15A, DPDT is a genuine OEM electrical component designed for the HI750 and HI900 series mobile indirect fired air heaters. As a direct factory replacement, this relay socket is built to the exact switching and current specifications required by Wacker Neuson's indirect heater control circuits. It fits a wide range of HI750 and HI900 configurations — including diesel, natural gas, LP, skid-mounted, and surge brake variants — so whether you're servicing a standard unit or a heavy-duty cold-weather model, you're covered with the correct OEM part. Ordering by part number ensures you receive the verified component without guesswork.
Key Features
- Correct Switching Capacity: — Rated at 15A with DPDT (Double Pole Double Throw) configuration, matching the exact switching demand of the heater control circuit.
- Genuine OEM Part: — Sourced directly from Wacker Neuson, this socket relay meets the original electrical tolerances specified for the HI750 and HI900 heater platforms.
- Drop-In Socket Replacement: — Designed to seat directly into the existing relay socket position on the control board assembly — no rewiring or adapter needed.
- Broad HI-Series Fitment: — Compatible with HI750 and HI900 models across diesel, natural gas, LP, skid-mounted, and surge brake configurations, including heavy-duty and cold-weather (-40°) variants.
- Protects Heater Control Operation: — A failed or intermittent relay socket can cause erratic ignition behavior, burner shutdowns, or complete loss of heater control — replacing it restores proper switching function and consistent heat output.
- Electrical Safety Compliance: — Using the correct OEM-rated relay socket maintains the intended circuit protection characteristics of the heater's control system, which is critical in fuel-burning equipment operating in enclosed or cold-weather environments.
A socket relay in an indirect fired air heater acts as an electrically controlled switch within the burner control circuit, directing power to ignition, fuel, and blower functions based on signals from the thermostat and control board. When the relay socket degrades — through corrosion, heat cycling, or contact wear — it can cause unreliable switching that leads to nuisance shutdowns, failure to ignite, or uncontrolled burner cycling. Replacing a worn socket relay restores clean, predictable control signals and keeps the heater operating safely through demanding heating seasons.
Part Details
| Part Number | 5000192466 |
|---|---|
| Old Part Number | 0192466 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Socket Relay, 15A, DPDT |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI750 DGM HEATER-INDIRECT | HI750GM | 5000620859, 5000620930 |
| Mobile Indirect Fired Air Heat er, Diesel | HI750D | 5000620856, 5000620923, 5000620924 |
| HI 750GM HD-Mobile Indirect Ai r Heater-Surge, -40 | HI750GMHD | 5000620969 |
| HI750G HEATER-INDIRECT | HI750G | 5000620857, 5000620928, 5000620929 |
| HI900 Heater-DGM,Srg,-40 | HI900DGM | 5200014221, 5200014222, 5200014165, 5200014166 |
| HI 900D Heater-Indirect | HI900D | 5200014158, 5200014159, 5200014160 |
| Skid Indirect Air Heaters Natu ral Gas | HI900G | 5200014161 |
| HI 900G Heater-Indirect,3x16 | HI900 G | 5200014163, 5200014164 |
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.
