Multiquip ATS-53949 ATS 100A 480V 3-Pole NEMA 1 Open Service

The Multiquip ATS-53949 is a genuine OEM ATS 100A 480V 3-Pole NEMA 1 Open Service unit designed for NEMA1 series equipment. As a direct OEM replacement, this automatic transfer switch is built to the same specifications as the original component, ensuring correct electrical ratings and enclosure compliance. Sourced directly through Multiquip's authorized parts network, the part is the correct replacement when servicing or restoring automatic power transfer functionality on compatible equipment. DHS Equipment stocks this part to keep your power systems operating without compromise.

Key Features

• Correct Electrical Rating — Rated at 100A and 480V, this transfer switch matches the original load capacity and voltage specification, supporting safe and compliant power switching.
• 3-Pole Configuration — Three-pole design ensures proper phase switching for three-phase power systems, maintaining balanced load distribution across all legs.
• NEMA 1 Open Service Enclosure — NEMA 1 rated housing is suited for indoor installations where basic protection against contact with enclosed equipment is required.
• Direct OEM Replacement — Genuine Multiquip part this part installs directly in place of the original unit with correct mounting and terminal configurations for NEMA1 equipment.
• Automatic Transfer Function — Enables seamless automatic switching between power sources, protecting connected loads from interruption during primary power loss.
• Verified Compatibility — Confirmed fitment for NEMA1 series equipment; cross-reference ATS-53949 with your unit's parts list before ordering to ensure correct application.

An automatic transfer switch (ATS) is the component responsible for detecting a loss of primary power and automatically switching the electrical load to a backup or standby power source. In generator and power distribution applications, the ATS monitors incoming voltage and, upon detecting an outage or fault, transfers the connected load without manual intervention. A failed or degraded transfer switch can result in loss of automatic failover capability, leaving critical loads unprotected during a power event — making prompt replacement with the correct OEM part essential to maintaining system integrity.

For questions about fitment or to confirm this part is correct for your application, contact the DHS Equipment parts team before ordering.

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.