The Wacker Neuson Thermal Switch is a genuine OEM component designed for PS4-11003HH and PS4-1003HF series 100mm submersible pumps. Sourced directly from Wacker Neuson, this part carries the same specification as the switch fitted at the factory, ensuring correct calibration and a direct drop-in installation. Verified fitment spans multiple voltage and frequency configurations within the PS4 submersible pump family, including 400V/50Hz and 440V/60Hz variants.
Key Features
- OEM-Calibrated Trip Threshold — Genuine Wacker Neuson part matched to the exact temperature activation point specified for these submersible pump motors, not an approximation.
- Direct Drop-In Installation — Matches the original connector type and mounting configuration of the PS4-11003HH and PS4-1003HF, so installation requires no rework or adaptation to existing wiring.
- Broad PS4 Series Coverage — Confirmed fitment across PS4-11003HH and PS4-1003HF models in multiple voltage ratings, covering both 50Hz and 60Hz pump configurations.
- Motor Protection You Can Count On — A correctly functioning thermal switch cuts power before the motor reaches damaging temperatures; a failed or out-of-spec switch leaves the motor exposed to burnout during heavy pumping cycles.
- Electrical Safety Compliance — As an OEM electrical protection component, this switch meets the original design intent for overcurrent and overtemperature safeguarding in submersible pump applications.
A thermal switch is a protective electrical component fitted inside the motor housing of a submersible pump. It monitors motor temperature and automatically interrupts the electrical circuit if the motor overheats — typically caused by running dry, pumping debris-laden water, or sustained overload conditions. When the switch trips, it cuts power to prevent winding damage and potential motor failure. A worn or faulty thermal switch may fail to trip when needed, allowing the motor to overheat and burn out, or may nuisance-trip under normal operating temperatures, causing the pump to shut down unexpectedly on the job.
Part Details
| Part Number | 5200023120 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Thermal Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PS4-11003HH | PS411003HH | 5000008868, 5000008876, 5000009154, 5000009208 |
| PS4-1003HF | PS411003HF | 5000008872, 5000008878, 5000009210 |
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.
