Multiquip 7128-08 Thermal Protector

The Multiquip 7128-08 is a genuine OEM Thermal Protector designed for ST-series submersible pump models including ST4, ST6, ST41230, ST41460, ST61230, and ST61460. As a direct OEM replacement, this part is manufactured to the same specification as the original component, ensuring a correct fit and proper electrical integration within the pump motor housing. Keep a spare on hand for any ST4 or ST6 series pump in regular service — thermal events can occur without warning and having Multiquip part 7128-08 available means fast turnaround when it counts.

Key Features

• OEM-Spec Thermal Cutoff Rating — Manufactured to the original trip temperature and reset specification, ensuring the protector responds correctly under real overload conditions rather than cutting out prematurely or failing to trip.
• Drop-In Motor Replacement — Matches the original mounting configuration and terminal connections inside the pump motor, allowing straightforward installation without reworking wiring or brackets.
• Broad ST-Series Fitment — Confirmed for ST4, ST6, ST41230, ST41460, ST61230, and ST61460 Multiquip submersible pump models.
• Motor Protection You Can Count On — A properly functioning thermal protector prevents motor winding damage during sustained overload or dry-run events, extending pump service life significantly.
• Electrical Safety Compliance — Submersible pump motors operating in wet or flooded environments demand components that meet original overcurrent and thermal protection requirements; this OEM part satisfies those requirements out of the box.

A thermal protector is an automatic safety device embedded in the pump motor that monitors winding temperature during operation. When the motor overheats — due to overloading, running dry, or blocked flow — the protector interrupts the circuit to prevent damage to the motor windings. Once the motor cools to a safe temperature, the protector resets and normal operation can resume. A failed or bypassed thermal protector leaves the motor vulnerable to burnout, turning a minor service call into a costly motor replacement.

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.