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The SIEMENS ED42B100L is a molded case circuit breaker rated for 2-pole operation at 480 volts and 100 amps. It provides overcurrent and short-circuit protection in commercial and industrial electrical distribution systems. The ED4 frame design is built for panel board and switchboard applications where reliable fault interruption is required. Licensed electricians install this breaker during new construction, panel upgrades, and equipment branch circuit installations. The compact molded case housing protects the internal trip mechanism from environmental contamination common in industrial environments.
This breaker is suited for commercial and light industrial applications requiring 480V, 2-pole branch circuit protection. Typical installations include motor branch circuits, HVAC equipment disconnects, and distribution panel branch positions. The 100A continuous rating supports a range of medium-load electrical equipment. It fits applications governed by NEC requirements for overcurrent protection of 480-volt, 2-phase branch circuits in commercial buildings, industrial facilities, and mechanical rooms.
Designed as an OEM-style replacement or direct-fit breaker for ED4-frame commercial and industrial panelboards and switchboards rated for 480V, 2-pole positions.
Installation must be performed by a licensed electrician in accordance with the NEC and applicable local electrical codes. De-energize and lock out the panel before installing or replacing this breaker. Verify the bus bar rating and panel frame compatibility before insertion. Do not exceed the breaker's 100A continuous rating when sizing branch circuit loads.
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