The Wacker Neuson Relay is a genuine OEM component designed for the HI 120HD indirect-fired air heater. Sourced directly from Wacker Neuson, this relay matches the original part specification exactly, ensuring a drop-in replacement with no guesswork. It is the correct relay for the HI 120HD series, making it the right choice for technicians and operators looking to restore full heater function quickly and confidently.
Key Features
- Genuine OEM Electrical Specification — Matches the original coil voltage, contact rating, and switching characteristics of the factory-installed relay, so the heater's control circuit operates exactly as designed.
- Direct Connector Match — Engineered to seat into the original relay socket on the HI 120HD, with terminal positions and housing dimensions identical to the part being replaced.
- Confirmed HI 120HD Fitment — Verified for the HI 120HD indirect-fired air heater, eliminating compatibility questions before you begin the repair.
- Restores Reliable Ignition and Burner Control — A failed relay can prevent the burner from firing or cause erratic heater cycling; replacing it with the correct OEM part brings the heating system back to consistent, controlled output.
- Electrical Safety Compliance — As a switching component in a fuel-burning heater's control circuit, using the correct OEM relay maintains the intended safety switching behavior and protects against uncontrolled burner operation.
A relay is an electrically operated switch that allows the heater's low-voltage control board to switch higher-current circuits — such as the igniter, fuel valve, or blower motor — on and off without routing that load through the control electronics directly. In an indirect-fired air heater like the HI 120HD, the relay is a critical link in the ignition and combustion control sequence. When a relay fails, it can result in the burner not starting, the heater shutting down unexpectedly, or specific functions becoming unresponsive, all of which halt heating output on the jobsite.
Part Details
| Part Number | 5200024753 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relay |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 120HD | HI120HD | 5200019343 |
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.
