Square D | A1B350 | Circuit Breaker | 50A | 3-Pole | 240V | 10kA | Bolt-On

Meet the Square D A1B350 circuit breaker — a purpose-built solution for reliable three‑phase protection in demanding 240V systems. This 50A, 3‑pole unit is engineered for maintenance, retrofit, and replacement scenarios where exact specs matter, delivering dependable interruption capability with a bolt‑on mounting design for streamlined installation.

Key features that matter in real-world setups

• Amperage and configuration: 50A, 3‑pole configuration to safeguard three‑phase circuits commonly found in commercial and light‑industrial equipment.
• Voltage and interruption rating: 240V operation paired with a 10kA interrupting rating for robust fault handling in high‑demand environments.
• Bolt‑on installation: Quick, secure mounting that simplifies service and reduces replacement downtime in panelboards designed for bolt‑on breakers.
• Part reference for compatibility: The A1B350 designation serves as your best match when verifying fit with your Square D panel system.
• Targeted use cases: Ideal for maintenance, retrofit projects, and replacements where exact electrical specs align with existing equipment.

Why this breaker matters for your system

When you're upgrading or refreshing a panel, matching the exact amperage, pole count, voltage, and interrupting capabilities is crucial to maintaining electrical safety and reliability. The Square D A1B350 is designed to drop into compatible bolt‑on installations without compromising protection or performance, helping you:

• Protect motors and three‑phase equipment from overloads and short circuits.
• Minimize system downtime during retrofit projects with a straightforward bolt‑on replacement.
• Maintain consistent protection ratings across your electrical infrastructure for easier maintenance planning.

Ideal use scenarios

• Upgrading legacy panels to ensure consistent 3‑phase protection for manufacturing lines or HVAC systems.
• Replacing worn or failed breakers in commercial electrical rooms where a precise 50A, 3‑pole, 240V solution is required.
• Retrofit projects that demand a bolt‑on design to fit existing mounting rails without complex rewiring.

Compatibility and installation guidance

Before ordering, verify that your panel accepts bolt‑on, 3‑pole breakers with a 50A rating and 240V operation. The A1B350 part number is the most reliable reference for compatibility, ensuring the correct trip characteristics and mounting fit for your Square D system. If you’re replacing an existing unit, compare the exact specifications on the current breaker to confirm a seamless swap.

Note: Confirm fit and ratings before ordering. The A1B350 part number is the best reference for compatibility to ensure a precise match with your Square D panel and field wiring configuration.