Square D | Q1245 | Circuit Breaker | 45A | 2-Pole | 240V

Meet the Square D Q1245 circuit breaker—a precise, reliable protection device designed for maintenance, retrofit, and replacement projects where exact specifications matter. With a 45A rating, 2-pole configuration, and 240V operation, this unit ensures your electrical circuits stay guarded under demanding conditions while matching the original panel design.

Key specifications

• Amperage: 45A
• Poles: 2-Pole
• Voltage: 240V
• Part number: Q1245

Compatibility and installation notes

For a successful fit, always confirm the exact fit and ratings before ordering. The part number (Q1245) is your best reference when checking compatibility with your panel or load center, ensuring you maintain proper protection without unintended interruptions.

Use cases and who benefits

• Maintenance: Replace aging or failed breakers to restore reliable overcurrent protection in your electrical system.
• Retrofit: Update or modify panels to accommodate circuits that require a 45A, 240V, 2-pole solution.
• Replacement: Remove a damaged or obsolete breaker and swap in a like-for-like Q1245 to preserve panel continuity.

Why this matters

Choosing the Q1245 ensures you’re aligning with Square D’s established protection standards. A precise match to 45A, 2-pole, 240V specifications minimizes compatibility risk and helps maintain panel reliability, protection coordination, and code-compliant operation across your electrical system.

Practical guidance

• Keep a record of the exact part number (Q1245) to streamline future maintenance and replacements.
• Before installation, verify that the panel’s labeling, bus type, and space accommodate a 2-pole 240V device of this rating.
• Store and handle circuit breakers in a clean, dry environment to prevent corrosion or mechanical damage that could affect performance.