Square D HDA36100U31X 100A 600V 3P Molded Case Circuit Breaker

Product Description

The SQUARE D HDA36100U31X is a 3-pole, plug-in molded case circuit breaker rated for 100 amps at 600 VAC. It uses an electronic trip mechanism, which provides consistent and precise overcurrent protection compared to thermal-magnetic designs. The breaker accepts wire sizes from 14 AWG through 3/0 AWG and supports multiple breaking capacity ratings, making it suitable for a range of fault-current environments. Licensed electricians install this type of breaker in commercial and industrial panelboards and switchgear assemblies where reliable branch or feeder circuit protection is required.

The HDA36100U31X is designed for use in commercial and industrial electrical distribution systems. The plug-in I-Line and lug terminal connection options allow installation in compatible Square D panelboard enclosures and bus configurations. This breaker is commonly specified for feeder and branch circuit protection in manufacturing facilities, commercial buildings, and heavy mechanical rooms where 600 VAC distribution and multiple breaking capacity performance are required.

Key Features

• 100-amp continuous rating at 600 VAC for robust circuit protection
• Electronic trip mechanism for precise and repeatable overcurrent response
• 3-pole configuration for three-phase circuit protection
• Accepts 14 AWG through 3/0 AWG conductors
• Multiple breaking capacity ratings for versatile fault-current applications
• Compatible with I-Line and lug terminal connection types

Compatibility

Designed for installation in compatible Square D I-Line panelboards and switchgear enclosures that accept plug-in molded case circuit breakers with I-Line or lug terminal connections.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the panelboard or switchgear assembly before removing or installing the breaker. Verify that conductor sizing and terminal torque requirements meet NEC table specifications for the wire gauge used. Do not exceed the breaker's rated voltage or amperage for the intended circuit.