The Wacker Neuson Relay is a genuine OEM component designed for the HSH700 and HSH650 hydronic surface heaters. Sourced directly from Wacker Neuson, this relay matches the original part specification exactly, ensuring correct integration into the heater's electrical control system. It is a direct replacement for the factory-installed relay on compatible HSH series machines.
Key Features
- OEM-Spec Electrical Rating — Manufactured to the exact switching capacity and coil voltage of the original, ensuring proper load control within the heater circuit.
- Drop-In Replacement — Matches the original mounting footprint and terminal configuration of the HSH700 and HSH650, allowing straightforward installation without modification to the wiring harness.
- HSH Series Fitment — Confirmed compatibility with the HSH700 and HSH650 hydronic surface heaters, covering both models in the current HSH lineup.
- Stable Control Signal — A properly functioning relay ensures clean, consistent switching of heating circuits; a failed relay can cause the heater to run erratically, fail to ignite, or not respond to thermostat inputs.
- Electrical Safety Integrity — As a switching component in a fuel-burning heating system, using an OEM-spec relay maintains the designed safety margins for circuit protection and load management.
A relay is an electrically operated switch that allows a low-current control signal — typically from a thermostat or control board — to switch a higher-current circuit on or off without direct mechanical contact. In a hydronic surface heater like the HSH700 and HSH650, the relay plays a central role in managing the burner, pump, and heating circuits in response to temperature demands. When a relay fails, common symptoms include circuits that stay on or off regardless of commands, intermittent operation, or a complete loss of heat output — all of which can bring concrete curing or ground thawing operations to a halt.
Part Details
| Part Number | 5000169171 |
|---|---|
| Old Part Number | 0169171 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Relay |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HSH700 | HSH700G | 5000620243 |
| HSH650 | HSH650 | 5000620991 |
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.
