Square D HLA36100SD 100A 3-Pole 600 V Circuit Breaker

Meet the Square D HLA36100SD 100A 3-Pole 600 V Circuit Breaker—a rugged, compact overcurrent protection device designed for reliable performance in three‑phase power systems. With the part number HLA36100SD, this Square D breaker delivers precise protection for feeders and branch circuits in commercial and light industrial panels.

Key specifications

• Part Number: HLA36100SD
• Current Rating: 100 A
• Poles: 3
• Voltage Rating: 600 V

Why this breaker stands out

Designed as an exact-fit solution for Square D panel boards and compatible switchgear, this 3‑pole breaker provides robust protection for 3‑phase circuits in demanding environments. Its straightforward, durable design supports quick replacement and reliable trip performance, helping you maintain continuous operation with less downtime. By aligning precisely with the Square D family, it minimizes compatibility concerns and ensures a secure, dependable install in your 600 V distribution system.

Ideal use cases

• Three-phase feeder protection in commercial electrical panels and light industrial installations
• Protection for three-phase motor and equipment circuits in warehouses, workshops, and manufacturing facilities
• Replacement or retrofitting within existing Square D installations to restore intended circuit protection

Installation and compatibility

Best used in compatible Square D panels and switchgear designed for 600 V systems. When selecting this breaker, confirm that the panel rating and bus compatibility match the 3‑pole, 100 A specification. For a safe, proper install, rely on a qualified electrician and follow the manufacturer’s guidance for electrical code compliance.

Practical insights

Choosing a 100 A, 3‑pole breaker like the HLA36100SD is a strategic choice for balancing protection with available electrical capacity in three‑phase circuits. The precise fit reduces commissioning time, while the 600 V rating supports a wide range of industrial and commercial applications. Keep this part on hand for planned panel upgrades, routine maintenance, or when replacing legacy breakers that no longer meet protection standards.