The Multiquip LY2DUS12VDC is a genuine OEM Relay With Diode designed for the DCA Ultra-Silent and Super-Silent generator series, including DCA70SSJU, DCA125SSIU, DCA150SSJU, DCA220SSJU, DCA300SSJU, and a wide range of related DCA models. As a direct OEM replacement, this relay carries the same design and construction specifications as the component originally installed at the factory, ensuring correct electrical integration with the generator's control circuit. DHS Equipment supplies this part with verified part number accuracy so you can order with confidence that LY2DUS12VDC is the correct relay for your machine.
Key Features
- Integrated Diode Protection — The built-in suppression diode eliminates voltage spikes when the relay coil de-energizes, protecting sensitive control electronics from back-EMF damage.
- Correct Coil Voltage Rating — Rated for 12V DC operation, matching the control circuit voltage spec across the DCA Ultra-Silent and Super-Silent generator lines.
- Genuine OEM Construction — Manufactured to Multiquip's original design, ensuring proper contact resistance, switching capacity, and terminal geometry for a clean, secure installation.
- Broad DCA Series Compatibility — Fits an extensive range of DCA generator models spanning 20 kVA through 300 kVA class units, including Tier 4 and CAN-market variants.
- Electrical Safety Compliance — As a genuine OEM electrical component, this part meets the original design intent for safe switching within the generator's control panel, reducing risk of misfire or control failure.
A relay is an electrically operated switch that allows a low-current control signal to switch a higher-current load circuit on or off. In diesel generators like the DCA series, relays manage critical functions including start circuits, shutdown solenoids, and auxiliary control outputs. The integrated diode in this relay suppresses the inductive voltage spike generated when the coil is switched off — a spike that, if uncontrolled, can damage programmable controllers, sensors, or other relay coils sharing the same circuit. When a relay fails, the circuit it controls may stop responding entirely, resulting in a generator that will not start, will not shut down on command, or loses a controlled output function. Replacing a faulty relay with the correct OEM unit restores full control circuit integrity.
Part Details
| Part Number | LY2DUS12VDC |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Relay With Diode |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diesel Powered Generators | DCA125SSIU |
| Diesel Powered Generators | DCA125SSIU4F |
| Diesel Powered Generators | DCA125SSJU4I |
| Diesel Powered Generators | DCA125USI3CAN |
| Diesel Powered Generators | DCA150SSJU3 |
| Diesel Powered Generators | DCA150SSJU4F |
| Diesel Powered Generators | DCA150SSJU4F3 |
| Diesel Powered Generators | DCA180SSJU4F3 |
| Diesel Powered Generators | DCA20SPXU4F |
| Diesel Powered Generators | DCA220SSJ |
| Diesel Powered Generators | DCA220SSJU |
| Diesel Powered Generators | DCA220SSJU4F |
| Diesel Powered Generators | DCA220SSJU4F3 |
| Diesel Powered Generators | DCA25SSIU4F |
| Diesel Powered Generators | DCA300SSJU4F2 |
| Diesel Powered Generators | DCA300SSJU4F3 |
| Diesel Powered Generators | DCA36SPXU4F |
| Diesel Powered Generators | DCA40SSKU4F2 |
| Diesel Powered Generators | DCA45SSIU4F |
| Diesel Powered Generators | DCA70SSIU4F |
| Diesel Powered Generators | DCA70SSJU4F |
| Diesel Powered Generators | DCA150SSVU |
| Diesel Powered Generators | DCA70SSJU |
| Diesel Powered Generators | DCA125USI |
| Diesel Powered Generators | DCA150USJ |
| Diesel Powered Generators | DCA-70USJ |
| Diesel Powered Generators | DCA85USJ |
| Diesel Powered Generators | DCA100SSVU |
| Diesel Powered Generators | DCA180SSJU |
| Diesel Powered Generators | DCA20SPX |
| Diesel Powered Generators | DCA20SPXU2 |
| Diesel Powered Generators | DCA150USJ3CAN |
| Diesel Powered Generators | DCA25USI4CAN |
| Diesel Powered Generators | DCA45USI4CAN |
| Diesel Powered Generators | DCA70USI3CAN |
| Diesel Powered Generators | DCA150SSJU4F2 |
| Diesel Powered Generators | DCA180SSJU4F |
| Diesel Powered Generators | DCA220SSJU4F2 |
| Diesel Powered Generators | DCA300SSJU4F |
| Diesel Powered Generators | DCA300SSJU4F3PD |
| Diesel Powered Generators | NGA100SSPUL |
| Diesel Powered Generators | DCA45SSIU4FC8 |
| Diesel Powered Generators | DCA150USJ2 |
| Diesel Powered Generators | DCA125SSJU4i 60Hz |
| Diesel Powered Generators | DCA150SSJU4F3 (60HZ) |
| Diesel Powered Generators | DCA150SSVU-FEMA |
| Diesel Powered Generators | DCA15SPX4 |
| Diesel Powered Generators | DCA180SSJU4F (60HZ) |
| Diesel Powered Generators | DCA20SPXU2D |
| Diesel Powered Generators | DCA20SPXU2 Servpro |
| Diesel Powered Generators | DCA220SSJU4F2 (60Hz) |
| Diesel Powered Generators | DCA220SSJU4F 60Hz |
| Diesel Powered Generators | DCA25SSIU4FC8 60Hz |
| Diesel Powered Generators | DCA300SSJU4F2 60Hz |
| Diesel Powered Generators | DCA300SSJU4F (60Hz) |
| Diesel Powered Generators | DCA36SPXU4F (60Hz) |
| Diesel Powered Generators | DCA40SSKU4F2 (60Hz) |
| Diesel Powered Generators | DCA70SSIU2-FEMA |
| Diesel Powered Generators | DCA70SSIU4F (60Hz) |
| Diesel Powered Generators | DCA70SSJU4F 60Hz |
| Diesel Powered Generators | DCA25SSIU4FC8 |
| Diesel Powered Generators | DCA40SSKU4F |
| Diesel Powered Generators | DCA70SSIU2 |
| Diesel Powered Generators | DCA70SSJU2 |
| Diesel Powered Generators | DCA70SSJU4i |
| Diesel Powered Generators | DCA45USI2 |
| Diesel Powered Generators | DCA125SSIU50HZ |
| Diesel Powered Generators | DCA125SSIU60HZ |
| Diesel Powered Generators | DCA150USJ3CAN (FR) |
| Diesel Powered Generators | DCA180SSJU4F3 (60HZ) |
| Diesel Powered Generators | DCA20SPXU4F SERVPRO |
| Diesel Powered Generators | DCA220SSJU4F3 60Hz |
| Diesel Powered Generators | DCA25USI4CAN (FR) |
| Diesel Powered Generators | DCA300SSJU4F3PD 60Hz |
| Diesel Powered Generators | DCA300SSJU4F3 60Hz |
| Diesel Powered Generators | DCA45SSIU4FC8 60Hz |
| Diesel Powered Generators | DCA45SSIU4F 60Hz AGGREKO |
| Diesel Powered Generators | DCA45USI4CAN (FR) |
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.
