Multiquip 7128 Thermal Protector

The Multiquip 7128 Thermal Protector is a genuine OEM component designed for ST4 and ST6 series submersible pumps, including ST41230, ST41460, ST61230, and ST61460 models. As a direct OEM replacement, it meets the original design specifications Multiquip built into these pumps from the factory. Sourced directly through authorized channels, the 7128 ensures you are installing the exact part your pump was engineered to use. If your submersible pump is overheating, shutting down unexpectedly, or showing signs of motor stress, this is a critical component to inspect and replace.

Key Features

• Genuine OEM Thermal Protection: — Built to the original switching threshold for ST-series submersible pump motors, ensuring the protector trips at the correct temperature — not too early, not too late.
• Drop-In Replacement: — Matches the original mounting configuration and electrical connections of the factory-installed protector, allowing straightforward installation without modification.
• Broad ST-Series Compatibility: — Confirmed fitment across ST41230, ST41460, ST61230, ST61460, ST4, and ST6 submersible pump models.
• Motor Overload Defense: — When pump motor temperature exceeds a safe operating threshold, this protector interrupts the circuit before heat buildup causes winding damage or motor failure.
• Electrical Safety Compliance: — Proper thermal protection is a critical safety function in submersible pump applications; using a correctly rated OEM component ensures the circuit protection performs as the pump's electrical system was designed to require.

A thermal protector is an automatic safety device embedded in a submersible pump's motor circuit. Its job is to monitor motor temperature and cut power if the motor begins to overheat — protecting the windings from heat damage that would otherwise cause permanent motor failure. When a thermal protector wears out or fails, the pump loses this safeguard entirely: it may shut down at random, fail to restart, or worse, run without any overtemperature protection at all. Replacing a faulty thermal protector with the correct OEM-spec part restores the motor's built-in defense against heat-related failure and keeps the pump operating safely in demanding dewatering conditions.

Need help confirming this part fits your specific unit? Contact the DHS Equipment team with your model and serial number for support.

Part Details

Compatibility & Fitment

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.