GE Multilin SR489-CASE – Replacement Draw‑Out Enclosure for SR489 Generator Protection Relay

You might notice the model reads “SR489-CASE.” From my experience, this part number belongs to GE Multilin’s SR family rather than Yokogawa. It’s the OEM replacement enclosure (draw‑out case) used with the GE Multilin SR489 generator protection relay. If you’re repairing a damaged housing, standardizing fleets, or preparing a spare for critical units, this is typically the right mechanical shell to restore a relay to safe, panel‑mount service.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express delivery: FedEx, UPS, DHL

Key Features

• Direct‑fit enclosure for SR489 – Designed to house the GE Multilin SR489 generator protection relay cradle without modification, keeping panel cutouts and fasteners consistent.
• Supports draw‑out maintenance – The relay withdraws from the case for testing or replacement, helping reduce outage time and disturbance to existing control wiring.
• Panel‑mount ready – Bezel and mounting hardware align with typical switchgear or control cabinet installations, making retrofit work straightforward in most cases.
• Restores damaged housings – Useful when the front bezel, latch points, or case rails are worn or broken, while the relay electronics are still healthy.
• Clean wiring interface – Maintains the relay’s rear terminal arrangement, so technicians typically won’t need to extend cables or change ferrules.

Technical Specifications

Related or Supporting Products

• GE Multilin SR489 – Generator protection relay main unit; the SR489-CASE is the mating enclosure.
• GE Multilin 889 – New‑generation generator protection; more advanced platform, different case and footprint.
• GE Multilin SR469 – Motor protection relay; similar SR‑series styling but different function and case compatibility.
• SEL-700G – SEL generator protection relay; alternative platform, not compatible with SR489 case dimensions.

Installation & Maintenance

• Cabinet & mounting – Install in a rigid panel or switchgear door that meets your plant’s IEC/NEMA standards. Keep the original SR489 panel cutout and fastener pattern. Ensure the door can support the relay’s insertion force without flexing.
• Ventilation – Provide normal convection airflow around the relay area. Avoid blocking the relay’s ventilation paths; heat buildup shortens electronics life even if the case itself is unaffected.
• Wiring – De‑energize circuits, label terminals, and verify torque per the SR489 manual. From my experience, reusing existing terminal ferrules and cable dressing reduces rework time and mistakes.
• ESD & handling – Use ESD protection when inserting/removing the relay chassis. The case rails and latch are mechanical, but the relay electronics are ESD‑sensitive.
• Routine checks – Periodically verify latch integrity, bezel screws, and the draw‑out mechanism. Clean dust from the bezel and vents with a dry, non‑abrasive cloth. No calibration is required for the case; firmware updates apply to the relay only.

Quality & Certifications

The SR489-CASE is a mechanical enclosure; certifications typically apply to the complete SR489 relay assembly. In most cases, installed SR489 systems carry CE and UL/CSA compliance as specified by GE Multilin for the relay. We back this enclosure with a 365‑day warranty as stated above.