The Wacker Neuson Relay Base is a genuine OEM component designed for the HSH and E-series hydronic surface heater lineup, including the HSH700, HSH700G, HSH650, HSH350, HP252, E2200, and E700M. As a direct factory replacement, this part restores proper relay mounting and electrical function to the heater's control circuit. Wacker Neuson genuine OEM parts are manufactured to the same specifications as the original, ensuring correct fit and consistent operation across compatible models.
Key Features
- OEM-Spec Electrical Interface: — Manufactured to exact original specifications, ensuring correct terminal alignment and contact rating for the relay circuit in Wacker Neuson hydronic heaters.
- Drop-In Replacement: — Mounts directly in place of the original base with no modification to existing wiring or mounting points, simplifying service time in the field.
- Broad HSH and E-Series Fitment: — Compatible with the HSH700G, HSH700, HSH650, HSH350, HP252, E2200, and E700M, covering a wide range of Wacker Neuson hydronic surface and ground heater configurations.
- Sustained Heat Output: — A correctly seated relay base maintains solid electrical contact at the relay, supporting uninterrupted control of heating cycles; a failed or corroded base can cause intermittent operation or complete loss of heat output.
- Electrical Safety Compliance: — Using the correct OEM relay base ensures the control circuit operates within its designed current and voltage parameters, reducing the risk of overheating or arcing at the relay connection.
The relay base serves as the fixed mounting socket for the relay in the heater's electrical control system. It provides the stable mechanical and electrical connection that allows the relay to switch the heater's heating circuit on and off in response to thermostat or control board signals. When the base becomes corroded, cracked, or develops loose contacts, the relay may fail to seat properly, leading to inconsistent heating cycles, error faults, or a complete loss of heater function — making prompt replacement essential for reliable cold-weather operations.
Part Details
| Part Number | 5000166806 |
|---|---|
| Old Part Number | 0166806 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relay Base |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HSH700 | HSH700G | 5000620243 |
| Hydronic Surface Heater | HSH350 | 5000620254, 5200001677 |
| HP252 | HP252 | 5000620249 |
| E2200 GROUND HEATER, W/ LIFT BAIL | E2200 | 5000620215 |
| HSH650 | HSH650 | 5000620991 |
| Hydronic Surface Heater, 700m hose | E700M | 5000620195 |
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.
