Square D LRA36600U43X 600A 3-Pole 600 V Circuit Breaker

Meet the Square D LRA36600U43X 600A 3-Pole 600 V Circuit Breaker—an industrial-grade protection device engineered to safeguard three-phase power distribution in demanding environments. With a 600 A current rating and a 3-pole configuration, this breaker is built to reliably interrupt fault currents and protect heavy feeders, motors, and distribution panels in your facility. The LRA36600U43X designation ensures precise ordering, compatibility, and traceability within your electrical system.

Key features that matter in real-world use

• 600 A current rating provides robust protection for high-demand feeders and equipment, helping prevent damage from overloads and short circuits.
• 3-pole design ensures synchronized disconnection across all three phases, increasing safety and simplifying fault clearance in balanced three-phase systems.
• 600 V maximum voltage rating supports common industrial power systems, delivering dependable performance in installations that run on three-phase 600-volt service.
• Reliable, durable construction designed to withstand the rigors of industrial environments, delivering consistent protection over time.
• Clear part identification with the LRA36600U43X model number aids maintenance planning, stocking, and cross-referencing with panels and schematics.

Ideal use cases

• Primary protection for large 3-phase feeders in industrial control panels, manufacturing lines, and distribution centers.
• Motor and equipment protection where a single device must guard three live conductors and disconnect all phases during a fault.
• Replacement or upgrade in facilities that require a high-current, three-pole solution for 600 V systems.
• Applications in facilities that rely on reliable, standardized Square D components to maintain consistent electrical performance.

Installation, safety, and compatibility

Install this breaker as part of a properly rated panel or switchgear designed for 3-phase 600 V service. Ensure your enclosure and bus connections are compatible with the LRA36600U43X form factor and that installation follows all applicable electrical codes. As with any high-current device, work should be performed by a licensed electrician with experience in industrial power distribution. Verify the assembly instructions and torque specifications provided by the manufacturer for a secure, code-compliant installation.

Technical specifications at a glance

• Part number: LRA36600U43X
• Current rating: 600 A
• Poles: 3
• Voltage rating: 600 V

When you need dependable three-phase protection for demanding 600 V systems, the Square D LRA36600U43X 600A 3-Pole 600 V Circuit Breaker delivers clear, tangible value—helping prevent downtime, protect expensive equipment, and keep your power distribution running smoothly. Order the LRA36600U43X today and align your electrical protection with a trusted Square D solution.