The Wacker Neuson Plug Connector is a genuine OEM component designed for the E1250 and HSH380 series hydronic surface heaters. Sourced directly from Wacker Neuson, this plug connector delivers an exact match to the original part — ensuring a secure, properly seated electrical connection with no guesswork on compatibility. It fits a broad range of E1250S, E1250B, and E1250P variants across LP/NG, Diesel, Standard, Basic, and Premium configurations, as well as HSH380S and HSH380B units in both generator and non-generator setups. When an original Wacker Neuson part is what the job calls for, the is the correct choice.
Key Features
- OEM-Specified Contact Integrity — Manufactured to the original connector specification, maintaining correct pin alignment and contact pressure critical for low-voltage control circuits in hydronic heating systems.
- Direct Plug-In Replacement — Matches the original connector housing and locking tab configuration for a secure, tool-free swap into the existing wiring harness.
- Broad E1250 and HSH380 Coverage — Confirmed fitment across E1250S, E1250B, and E1250P models in LP/NG and Diesel configurations, plus HSH380S and HSH380B units with and without onboard generators.
- Protects Heating System Control Logic — A properly functioning plug connector maintains a clean, uninterrupted signal path; a failed or corroded connector can cause erratic heater behavior, fault codes, or a complete loss of heating output.
- Electrical Safety Compliance — As a connector within the heater's control and ignition circuit, using a genuine OEM part ensures the connection meets the original design's insulation and current-handling requirements.
The plug connector serves as the interface point between individual wiring harness segments or between a harness and a control component within the hydronic heater's electrical system. It locks two mating connectors together to maintain a continuous, low-resistance electrical circuit — allowing control signals, sensor data, or power to pass cleanly between system components. When a plug connector becomes corroded, cracked, or develops a loose locking tab, the resulting intermittent connection can trigger fault conditions, prevent the heater from igniting, or cause unpredictable shutdowns during operation.
Part Details
| Part Number | 5200017739 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug Connector |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| E12540B | E1250B | 5200012353, 5200007613 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359, 5200007614 |
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.
