Square D HLA36100SL 100A 3-Pole 600 V Circuit Breaker

Introducing the Square D HLA36100SL 100A 3-Pole 600 V Circuit Breaker—a purpose-built protection device engineered for demanding three-phase power systems in commercial and industrial environments. With a 100-amp current rating and a 600-volt limit, this breaker guards critical feeders and equipment against overloads and short circuits, helping keep downtime to a minimum and reducing the risk of electrical damage.

• Part Number: HLA36100SL
• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V
• Brand: Square D

Why a three-pole design matters

In three-phase installations, synchronized disconnection across all phases is essential for safely interrupting fault conditions. The 3-pole configuration ensures a coordinated shutoff of all live conductors, protecting motors, drives, and other equipment from uneven phase faults and reducing the risk of damage from partial tripping.

Ideal use cases

• Industrial motor circuits (pumps, conveyors, compressors) operating on three-phase power
• Commercial HVAC and other large equipment feeders that require robust phase protection
• Three-phase distribution in panels and switchgear designed for 600 V systems

Installation and compatibility

Built to work with Square D panels and distribution boards that accept 3-pole devices. When installing, verify that the panel is rated for 600 V and supports 3-pole protection, and follow standard wiring practices and manufacturer torque guidelines to ensure a secure, compliant connection.

Operational benefits

• Rapid, predictable tripping minimizes downstream damage and downtime
• Durable construction tailored for industrial environments
• Clear protection for essential three-phase loads, enhancing overall system reliability

Maintenance and care

Regularly inspect for signs of overheating, arcing, or loose connections. Keep terminations clean and tight, watch for corrosion, and replace the unit if you observe any damage or repeated nuisance trips.

For reliable three-phase protection of demanding 600 V systems, the Square D HLA36100SL 100A 3-Pole 600 V Circuit Breaker delivers precise, coordinated protection and easy integration into compatible electrical panels.