Square D HGL36040 Molded Case Circuit Breaker 40A 3P

Product Description

The SQUARE D HGL36040 is a 3-pole molded case circuit breaker rated for 40 amps at 600 VAC and 250 VDC. It uses a thermal-magnetic trip mechanism to provide overload and short-circuit protection in industrial and commercial power distribution panels. The breaker accepts wire sizes from 14 AWG through 3/0 AWG via lug-style terminal connections and is actuated by a toggle switch reset. At 4.15 pounds, this is a full-size frame breaker suited for panel mount or free-standing enclosure installations where three-phase or multi-pole branch circuit protection is required. Licensed electricians and panel builders are the primary installers for this device.

The HGL36040 is designed for use in commercial and industrial power distribution systems requiring reliable multi-pole overcurrent protection at up to 600 VAC. The input data notes compatibility with communication network equipment, front display modules, operating assistance devices, and power meters. Its lug terminals accommodate a wide conductor range, making it a practical fit for new panel builds and replacement projects in facilities where 40-amp 3-pole protection is specified.

Key Features

• 40-amp continuous rating at 600 VAC and 250 VDC
• 3-pole configuration for three-phase or multi-wire branch circuits
• Thermal-magnetic trip mechanism for overload and short-circuit protection
• Lug terminal connections accepting 14 AWG through 3/0 AWG conductors
• Toggle switch reset actuator for manual operation
• Panel mount and free-standing enclosure installation support

Compatibility

Noted for use with communication network equipment, front display modules, operating assistance accessories, and power meters per manufacturer data. Designed as an OEM-style molded case circuit breaker for commercial and industrial panel applications requiring 40-amp 3-pole overcurrent protection at 600 VAC.

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 panel before installing or replacing any circuit breaker. Verify conductor sizing against the 14 AWG through 3/0 AWG lug terminal range before making connections. Confirm enclosure and panel compatibility for the breaker frame dimensions before mounting.