The Wacker Neuson Thermal Switch is a genuine OEM component designed for the PS21503 and PS31503 submersible pump series. As a direct factory replacement, this switch integrates seamlessly into the pump's thermal protection circuit without adaptation. It is engineered to Wacker Neuson's original specifications, ensuring the same protection thresholds and electrical characteristics as the part it replaces. Compatible with both the 50mm/2-inch and 75mm/3-inch 575V/60Hz submersible pump configurations, this is the correct OEM part to restore your pump's built-in overload protection.
Key Features
- OEM-Calibrated Trip Point — Factory-set thermal threshold matches the original switch's activation temperature, ensuring accurate overload protection for the pump motor.
- Direct Drop-In Replacement — Connects to the existing thermal protection circuit on PS21503 and PS31503 pumps without rewiring or modification to the harness.
- Confirmed Fitment — Verified for the PS21503 50mm/2-inch and PS31503 75mm/3-inch submersible pumps operating at 575V/60Hz.
- Motor Protection Restored — A functioning thermal switch automatically interrupts power when the motor overheats, preventing winding damage and extending pump service life.
- Motor Burnout Prevention — A failed or bypassed thermal switch leaves the pump motor unprotected against heat buildup, risking catastrophic electrical failure in demanding dewatering applications.
The thermal switch monitors motor temperature inside the submersible pump and automatically cuts power if the motor exceeds a safe operating temperature. This protects the motor windings from heat damage caused by dry running, blockages, or sustained heavy loads. When the switch fails or degrades, the pump loses this automatic safeguard, leaving the motor vulnerable to overheating and permanent electrical damage.
Part Details
| Part Number | 5000150579 |
|---|---|
| Old Part Number | 0150579 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Thermal Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 50mm/2in Submersible Pump 575V /60Hz | PS21503 | 5000009122 |
| 75mm/3in Submersible Pump 575V /60Hz | PS31503 | 5000009125 |
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.
