Square D | 999315 | Circuit Breaker | 15A | 3-Pole | 600V | 10kA | Bolt-On

The Square D 999315 Circuit Breaker is a sturdy, bolt-on protection solution designed for demanding electrical environments. With a precise 15A rating across three poles, it delivers reliable overcurrent protection for 600V systems while supporting up to a 10kA short-circuit interrupting capacity. Built for maintenance, retrofit, and replacement, this breaker keeps critical power paths safe and compliant without sacrificing performance.

• Amperage: 15A
• Poles: 3-Pole
• Voltage: 600V
• Interrupting capacity: 10kA
• Mounting style: Bolt-On
• Part reference: 999315

Why choose a bolt-on design? This mounting method delivers a robust, secure connection ideal for panels that experience vibration or heavier electrical loads. It’s a dependable option for applications where panel space and mounting reliability are priorities, and it pairs well with existing Square D installations that specify a 3-pole, 600V unit with a 10kA rating.

Ideal use cases

• Repairs and replacements in legacy Square D panels that require a 3-Pole, 600V protection device
• Retrofit projects where panel configurations demand a bolt-on mounted breaker
• Maintenance cycles in industrial/commercial facilities needing reliable overload protection for distribution circuits

Key considerations before purchasing

Confirm fit and ratings before ordering. The 999315 part number is the most reliable reference for compatibility with your panel, ensuring you maintain proper protection class and electrical listings. If you’re upgrading or replacing a worn breaker, this model offers a straightforward, secure option that aligns with standard Square D panel specifications.

Practical guidance for installation and operation: work with qualified electrical personnel, follow your panel manufacturer’s torque and mounting guidelines, and verify that the surrounding wiring and bus connections match the breaker’s 3-pole, 600V, 10kA configuration. When in doubt, rely on the exact part number (999315) to verify compatibility and maintain system integrity.