Multiquip 8973022030 Overheat Warning Switch

The Multiquip 8973022030 Overheat Warning Switch is a genuine OEM component designed for DCA-series ultra-silent diesel generators including the DCA25SSIU3, DCA20SPXU2, DCA20SPXU2D, DCA25USI, DCA25USI2, DCA25USI4CAN, and DCA25USI4CAN (FR). Sourced directly from Multiquip, this switch meets the original design specification for these generator models and installs as a direct replacement for the failed or damaged factory unit. Keeping this switch in proper working order is essential for protecting the generator's engine and electrical systems from heat-related damage.

Key Features

• Genuine OEM Thermal Switching Accuracy — Activates at the correct temperature threshold for DCA-series generators, ensuring the warning system trips when it should — not before, not after.
• Direct Drop-In Replacement — Matches the original connector type and mounting configuration, allowing straightforward removal and reinstallation without adapting wiring or hardware.
• Broad DCA-Series Compatibility — Fits DCA25SSIU3, DCA20SPXU2, DCA20SPXU2D, DCA25USI, DCA25USI2, DCA25USI4CAN, and DCA25USI4CAN (FR) ultra-silent generator models.
• Engine Protection You Can Count On — A functioning overheat switch triggers shutdown or alarm before thermal damage can occur; a failed switch leaves the engine running blind into potentially destructive heat conditions.
• Critical Electrical Safety Component — In generator applications, a correctly rated and responsive overheat switch is a front-line safeguard against fire risk and generator damage caused by undetected overheating.

The overheat warning switch monitors engine or coolant temperature and signals the generator's control system when a dangerously high temperature is detected. When the threshold is reached, the switch triggers a warning alarm, a controlled shutdown, or both, depending on the generator's control logic — preventing heat from escalating into engine failure or electrical damage. When this switch fails, the generator loses its thermal protection signal, leaving operators with no indication of an overheating condition and no automatic safeguard to prevent serious mechanical or electrical damage.

For fitment questions or help confirming this part is right for your machine, contact the DHS Equipment team before ordering.

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.