Multiquip 5825500422 Emergency Relay

The Multiquip 5825500422 Emergency Relay is a genuine OEM component designed for the DCA ultra-silent diesel generator series, including DCA25SSI, DCA25SSIU, DCA25SSAI, DCA25SSI2, DCA45SSIU2, and DCA45SSIU2-FEMA models. As a direct OEM replacement, this relay meets the exact electrical specifications required by the original design, ensuring correct operation within the generator's protective control circuit. Sourced directly from Multiquip, the part is the correct part for these units and installs in place of the original without modification.

Key Features

• Correct Switching Specification — Meets the original coil voltage and contact rating required by the DCA series emergency shutdown circuit, ensuring the relay activates and releases under the correct electrical conditions.
• Genuine OEM Component — Manufactured to Multiquip's original design tolerances, not a generic substitute — critical for a safety-linked relay where incorrect specs can compromise protective function.
• Broad DCA Series Fitment — Confirmed compatible with DCA25SSI, DCA25SSIU, DCA25SSIU-GEER, DCA25SSAI, DCA25SSI2, DCA45SSIU2, and DCA45SSIU2-FEMA ultra-silent generator models.
• Direct-Swap Installation — Matches the original relay footprint and terminal configuration, dropping into the existing control panel wiring without rewiring or adapters.
• Shutdown Circuit Integrity — A functioning emergency relay is essential for the generator to detect fault conditions and execute a safe shutdown. A failed relay can prevent proper shutdown response or trigger false stops, disrupting power delivery.
• Safety-Critical Replacement — This relay sits within the emergency protection circuit of the generator. Using the correct OEM-specified part is essential to maintain the intended protective response under fault or overload conditions.

The emergency relay is a key component in the generator's protective control system, responsible for detecting fault signals and triggering an automatic shutdown when abnormal operating conditions occur — such as low oil pressure, high coolant temperature, or an electrical overload. It acts as an electrically operated switch: when the control circuit sends a fault signal, the relay engages and interrupts power to shut the unit down safely. When this relay fails or operates outside its rated spec, the generator may either fail to shut down during a genuine fault — risking engine or alternator damage — or shut down unexpectedly during normal operation, interrupting critical power supply.

Need help confirming fitment for your unit? Contact the DHS Equipment team with your generator model and serial number and we'll verify the correct part before you order.

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.