Square D | GJL36040 | Circuit Breaker | 40A | 3-Pole | 600V | 65kA

Meet the Square D GJL36040 circuit breaker—a reliable, three‑pole protection device built for demanding electrical environments. With a 40 A rating and a 600 V maximum, this breaker is engineered to safeguard three‑phase circuits while delivering predictable, decisive trip performance when faults occur.

Key specifications at a glance

• Amperage: 40 A
• Poles: 3‑Pole
• Voltage rating: 600 V
• Interrupting capacity: 65 kA

Why choose the GJL36040 for maintenance, retrofit, or replacement? This unit is identified by the part number GJL36040, ensuring exact compatibility with your Square D panel and existing accessories. The part number is the best reference for matching fit, trip characteristics, and mounting footprint—so confirm fit and ratings before ordering.

Ideal use scenarios: - Retrofit projects where a precise 40 A, 3‑pole solution is required to align with existing panel configurations - Replacement of aging breakers in Square D installations that demand solid protection for 3‑phase machinery - Industrial and commercial applications where high fault current is possible, and a 65 kA interrupting rating offers robust protection

What makes this breaker stand out: - Genuine Square D design tailored to panels and accessories within the same ecosystem - Clear, defined trip characteristics that support reliable protection for downstream equipment - A three‑pole configuration that simplifies wiring and ensures balanced protection across phases

When you’re aligning a panel schedule or sourcing parts for a critical upgrade, the GJL36040 provides a precise, dependable match for 40 A, 3‑pole, 600 V circuits with strong interrupting capacity. Use this as your go‑to reference for compatibility and protection in your Square D installations.