ITE | CF3B045 | Circuit Breaker | 45A | 3-Pole | 600V

Introducing the ITE CF3B045 Circuit Breaker — a precise, reliable solution for protecting three‑phase 600V electrical systems. With a 45A rating and 3‑pole configuration, this breaker is purpose-built for maintenance, retrofit, and replacement projects where exact specifications matter.

• Amperage: 45A
• Poles: 3‑Pole
• Voltage: 600V
• Part number: CF3B045

Why this matters in real-world setups: a 3‑pole, 600V breaker provides robust overcurrent protection for three-phase equipment, helping to prevent damage from faults while enabling smoother startup and shutdown of industrial loads. The 45A rating strikes a balance between protecting equipment and avoiding unnecessary trips in normal operating conditions.

Ideal use cases

• Maintenance and service — replace aging or failed breakers with the exact CF3B045 to restore reliable protection quickly.
• Retrofit projects — upgrade legacy panels to current protection standards without changing the surrounding wiring or hardware.
• Replacement in three‑phase systems — need a precise, compatible 600V breaker that matches your existing CF3B family components?

Compatibility and fit

Important: confirm fit and ratings before ordering. The CF3B045 is the best reference for compatibility—use the part number to verify that your panel, panelboard, or switchgear accepts CF3B family breakers. If your documentation or labeling specifies CF3B045, you’re aligned for a straightforward replacement.

Installation and best practices

• Always de‑energize the system and follow lockout/tagout procedures before replacing a breaker.
• Ensure the mounting and busbar alignment match the three‑pole CF3B design to maintain proper seating and protection.
• Torque terminal screws according to your panel’s manufacturer guidelines to ensure a secure, reliable connection.
• Verify that the protection scheme aligns with your system’s fault current and operating conditions after installation.

What you’ll gain

The ITE CF3B045 delivers dependable overcurrent protection for 3‑phase, 600V applications while offering a precise fit for retrofit and replacement workflows. Built for electricians and maintenance teams who need a trusted, component‑level solution that minimizes downtime and reduces guesswork when restoring or upgrading electrical systems.