480//277V - 100A, 277V, 3-Phase, Pullout Switch

Engineered for demanding industrial and commercial environments, the 480//277V - 100A, 277V, 3-Phase Pullout Switch delivers reliable on/off isolation and robust overcurrent protection in a compact, maintenance-friendly package. Its 3-phase, 480Y/277V configuration makes it ideal for motor disconnects and branch-circuit protection within panelboards and switchgear lineups.

Why this pullout switch stands out

• Voltage and current versatility: rated for 480//277V with a 100A capacity, supporting both high-demand motors and lighting or control circuits in commercial buildings.
• Three-phase isolation: designed to break all three leads simultaneously for safe de-energization of heavy loads.
• Integrated overcurrent protection: fusible switch architecture provides protection against faults while simplifying panel integration.
• Compact, maintainable design: streamlined footprint with accessible fusible elements for quick maintenance and minimized downtime.
• Versatile applications: motor disconnects, panelboards, branch circuits—where a dependable disconnect is needed in tight spaces.
• Rugged construction for demanding environments: built to withstand industrial vibrations, dust, and temperature variations common in commercial spaces.

Ideal use cases

In manufacturing lines with 3-phase motors, this switch provides safe startup and shutdown, reducing wear on starters and electrical components. In commercial facilities, it protects branch circuits and panelboard feeders feeding heavy lighting, HVAC, compressors, and pumps. Its pullout mechanism allows maintenance personnel to isolate circuits quickly without disturbing adjacent protections.

Installation and compatibility tips

Designed to integrate with existing 3-phase distribution setups, this pullout switch is typically installed in appropriate enclosures as part of a larger switchgear assembly. Ensure correct alignment with the supply and load, and verify that the enclosure accommodates the 100A rating and 3-pole configuration. Regular inspections of the handle, contacts, and enclosure seals help maintain reliable operation in dusty or humid environments.

What makes it a smart choice

If you’re upgrading aging disconnects or designing a new 3-phase distribution for 480Y/277V systems, this pullout switch offers a compact, maintainable solution that consolidates isolation and protection in one device. It reduces wiring complexity and helps streamline maintenance routines, saving time and downtime when routine servicing is required.