Square D HLA36040AABCSJ 36040A 3-Pole 600 V Circuit Breaker Potential Transformer

Discover precise protection with the Square D HLA36040AABCSJ, a robust 3-pole circuit breaker engineered for demanding industrial power distribution. This unit blends protection and monitoring capabilities in one compact package, featuring a built-in potential transformer to support accurate metering and relay signaling. With part number HLA36040AABCSJ, it’s designed to streamline protection schemes while delivering dependable performance across distribution systems.

• Part Number: HLA36040AABCSJ
• Brand: Square D
• Current rating: 36040 A
• Poles: 3
• Voltage rating: 600 V

What sets this breaker apart is its integrated potential transformer, which provides direct compatibility with protective relays and metering equipment. The 3-pole design ensures balanced protection across all three phases, a critical advantage for motors, drives, and multi‑phase feeders. Built for reliability in industrial environments, this unit supports accurate monitoring, streamlined wiring, and easier integration with Square D protection ecosystems.

Ideal use cases include:

• Main distribution panels in manufacturing facilities
• Motor control centers (MCCs) and switchgear assemblies
• Data centers and facilities requiring integrated protection and metering
• Retrofits or upgrades where built-in transformer interfacing simplifies protection wiring

Why choose a circuit breaker with an integrated potential transformer? It consolidates protection and metering signals in one device, reducing external components and wiring complexity. You gain clearer visibility into current and voltage behavior, faster fault detection, and improved coordination with relays and protection schemes—without sacrificing reliability or ruggedness.

Installation and compatibility notes: this Square D unit is designed to slot into standard distribution assemblies compatible with the HLA series and Square D protection devices. For best results, follow established electrical standards, secure proper torque, and verify relay/metering compatibility with your protection plan. The HLA36040AABCSJ is a purpose-built solution for professionals who demand accurate protection and streamlined metering in a single, high-performance package.