Square D GJL36003M01 3A 3P 600V Circuit Breaker | AmpState

Square D GJL36003M01 is a purpose-built 3-pole, 3-amp, 600-volt circuit breaker designed for reliable protection in panelboards, load centers, and electrical distribution. This part is a smart pick for maintenance teams, panel builders, and spare inventory where a direct part-number match matters.

Why this breaker stands out is its precise compatibility with Square D installations and its straightforward replacement workflow. The 3P design delivers balanced three-phase protection, helping to coordinate protection across interconnected circuits while maintaining consistent interrupting performance across your distribution system.

Key advantages at a glance

• Direct part-number match: reduces guesswork, speeds up procurement, and ensures you’re ordering the exact replacement for your existing installations.
• Three-pole protection: ideal for three-phase panelboards and distribution setups that require synchronized switching across all live conductors.
• 3 A at 600 V: provides appropriate protection for moderate-load, three-phase applications without sacrificing system reliability.
• Brand reliability: built by Square D, a trusted name in electrical protection and panel integration.
• Stock availability: available from AmpState, with support to verify fit and compatibility when needed.

Who this is for

• Maintenance teams and service crews performing on-site replacements in existing Square D installations
• Panel builders and integrators requiring exact part-number compatibility for new builds or retrofits
• Facilities managers maintaining spare inventory to minimize downtime during faults or routine maintenance

Use cases and scenarios

• Replacing a failed 3-pole breaker in a three-phase panel where the exact GJL36003M01 part number is specified
• Stocking an exact-match spare to reduce downtime in critical electrical distribution systems
• Coordinating panel builds or upgrades with a reliable, field-proven Square D component

How this compares to alternatives (without naming competitors)

• Choosing the GJL36003M01 gives you an exact part-number match for streamlined ordering and installation, minimizing the risk of compatibility issues that can arise with generic or cross-reference breakers.
• The 3-pole, 600V specification is tailored for three-phase electrical environments, providing coordinated protection across all phases where a single-pole solution would fall short.

Practical tips for best results

• Verify that your panel labeling or maintenance manual specifies the GJL36003M01 part number for a direct replacement.
• Store spares in their original packaging to protect the mechanism and contacts from contaminants and handling damage.
• When in doubt about fit, message AmpState for a compatibility check—they offer guidance to confirm the part will integrate with your specific panel or load center.

Specifications at a glance

• Manufacturer: Square D
• Part Number: GJL36003M01
• Type: Circuit Breaker
• Amperage: 3 A
• Poles: 3
• Voltage: 600 V
• Availability: AmpState

Need help confirming fit? Message us and we’ll help you verify compatibility with your panel or distribution setup.