Westinghouse | MA3450 | Circuit Breaker | 450A | 3-Pole | 600V

Meet the Westinghouse MA3450 circuit breaker — a robust 3-pole, 450A unit designed for demanding three-phase power systems. Built for maintenance, retrofit, and replacement projects where exact specifications matter, this breaker ensures reliable control of your 600V distribution network.

Key specifications

• Amperage: 450A
• Poles: 3-Pole
• Voltage: 600V
• Part reference: MA3450

Why this MA3450 matters for your project

When upgrading an electrical panel or swapping a failed breaker, compatibility is everything. The MA3450 is the exact part number to reference if your system requires a 450A, 3-pole, 600V solution. Using the correct part minimizes downtime and ensures safe, predictable operation across your three-phase network.

Ideal use cases

• Maintenance activities in industrial facilities that rely on 600V three-phase distribution
• Retrofits that modernize aging panels while preserving established wiring configurations
• Replacement scenarios where a precise spec match prevents mismatched trip characteristics or fit issues

Who should consider this breaker

Electrical contractors, facilities engineers, and maintenance teams responsible for commercial and light industrial power systems with three-phase 600V rails will find the MA3450 a reliable, exact-spec replacement.

Practical tips for selection and installation

• Verify the panel's compatibility by matching the part number MA3450, amperage (450A), poles (3), and voltage (600V) with the existing equipment label
• Double-check fit and ratings before ordering to avoid compatibility issues
• Consult your panel's documentation for acceptable trip characteristics and mounting compatibility
• Follow best safety practices and local electrical codes during installation

Notes: Confirm fit and ratings before ordering. The MA3450 part number is your best reference for compatibility with three-phase, 600V systems needing a 450A, 3-pole breaker.