Multiquip ATS-54689 ATS 125A 480V 3PH 3 Pole Nema 3R

The Multiquip ATS-54689 is a genuine OEM ATS 125A 480V 3PH 3 Pole Nema 3R designed for NEMA3R-rated equipment applications. As a direct OEM replacement, this automatic transfer switch is manufactured to Multiquip's exact electrical specifications, ensuring correct voltage rating, phase configuration, and enclosure classification right out of the box. Sourced directly through authorized distribution, the part is the correct verified part for NEMA3R installations where dependable automatic power transfer is critical.

Key Features

• Exact Electrical Rating — Rated at 125A, 480V, 3-phase, 3-pole to match the precise load and voltage requirements of NEMA3R-rated power transfer applications.
• Weatherproof NEMA 3R Enclosure Rating — The NEMA 3R housing provides protection against rain, sleet, and external ice formation, making this switch suitable for outdoor and semi-exposed installations.
• Genuine OEM Component — Manufactured to Multiquip's original design specifications, ensuring the switch responds correctly to utility outage conditions and transfers load at the right threshold without nuisance tripping.
• Direct Drop-In Replacement — Designed to replace the original switch in NEMA3R-configured systems with no electrical re-engineering required — terminal layout and mounting configuration match the original installation.
• Critical Power Continuity — A properly functioning automatic transfer switch seamlessly shifts power between the utility source and backup generator; a failed or degraded unit can result in lost generator activation, leaving connected equipment without power during an outage.
• Electrical Safety Compliance — As a genuine OEM transfer switch, this unit is built to the specified interrupting capacity and dielectric ratings for the application, supporting safe and code-compliant automatic transfer switching in 480V 3-phase systems.

An automatic transfer switch monitors incoming utility power and automatically switches a connected load to a standby generator source when primary power is interrupted. In 3-phase 480V systems, the transfer switch must handle the full rated current across all three poles simultaneously while maintaining isolation between the two power sources. When a transfer switch fails — whether through contact wear, coil failure, or control board fault — the generator may fail to come online during an outage, leaving critical connected equipment without power. The NEMA 3R enclosure rating on this unit is specifically designed for applications where the transfer switch is mounted in outdoor or partially exposed environments, protecting internal components from moisture ingress and environmental contamination that would compromise switching reliability.

Part Details

Compatibility & Fitment

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Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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