Multiquip 0602201455 Heater Relay

The Multiquip 0602201455 Heater Relay is a genuine OEM component designed for DCA300SSC, DCA300SSCU, and MQP240 diesel-powered generators. As a direct OEM replacement, it meets the original design and electrical specifications set for these units, so you can restore proper heating system control without guesswork. Sourced directly through authorized Multiquip distribution channels, this part is the correct replacement when a failed or degraded relay is causing heating circuit issues on your generator. DHS Equipment stocks this part to help keep your generator running at full operational capacity.

Key Features

• Correct Electrical Specification — Manufactured to the original switching and load ratings required by the heater circuit on these Multiquip diesel generator models.
• Genuine OEM Quality — Produced under Multiquip's OEM program, ensuring the relay coil, contact material, and housing match the original unit exactly.
• Direct-Fit Replacement — Engineered to drop into the existing relay socket with no modifications to the wiring harness or mounting bracket.
• Confirmed Fitment — Compatible with DCA300SSC, DCA300SSCU, and MQP240 diesel-powered generator models.
• Restores Heating Circuit Control — A functioning heater relay ensures the heating element engages and disengages on demand; a faulty relay can cause the heater to fail entirely or run continuously, affecting cold-start performance and component longevity.

The heater relay is an electromechanical switching component that controls power delivery to the generator's heating element — typically a block heater or engine pre-heater used to bring the engine up to operating temperature in cold conditions. When the relay receives a control signal, it closes an internal contact to allow current to flow to the heater circuit; when the signal stops, the contact opens and cuts power. A worn or failed relay can result in a heating element that won't activate, leading to hard cold starts, excessive engine wear during startup, or a heater that stays on and risks overheating the coolant system.

For fitment questions or to confirm this part is correct for your specific unit, contact the DHS Equipment team directly.

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.