The Multiquip 1511660260 Emergency Relay D640B 50SS is a genuine OEM relay designed for the Multiquip D640B super-silent diesel generator. Sourced directly from Multiquip, this relay meets the exact electrical specifications required by the D640B, ensuring the emergency shutdown and protection circuits operate as intended. If you're servicing a D640B unit, this is the correct OEM replacement part for the job.
Key Features
- Correct OEM Electrical Specification — Engineered to the exact coil resistance and contact rating required by the D640B emergency circuit, ensuring proper switching response under load.
- Direct-Fit Replacement — Matches the original relay mount and connector configuration on the D640B, dropping into the existing relay socket without rework.
- D640B Generator Fitment — Confirmed for the Multiquip D640B super-silent diesel generator series.
- Emergency Circuit Integrity — A functioning relay in this position is critical to the generator's protective shutdown response; a failed relay can leave the machine unprotected during fault conditions.
- Genuine OEM Quality — Supplied as a genuine Multiquip OEM component, held to the same contact durability and housing standards as the part it replaces.
The emergency relay in the Multiquip D640B controls the protective shutdown circuit that responds to fault conditions such as low oil pressure, high coolant temperature, or overcurrent events. When triggered, the relay cuts power to the appropriate system to prevent engine or alternator damage. A relay that has degraded or failed entirely may cause the generator to shut down unexpectedly under normal load, fail to shut down when a genuine fault occurs, or prevent the unit from starting altogether — making prompt replacement critical to both uptime and equipment protection.
Need help confirming this is the right part for your machine? Contact the DHS Equipment parts team with your model and serial number and we'll verify fitment before you order.
Part Details
| Part Number | 1511660260 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Emergency Relay D640B 50SS |
Compatibility & Fitment
| Name | Model |
|---|---|
| D640B | D640B |
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.
