Siemens CLE63B040 40A 3-Pole 600 V Circuit Breaker

Siemens CLE63B040 40A 3-Pole 600 V Circuit Breaker is a robust, three-phase protective device designed to shield your electrical distribution from overloads and short circuits. Built with Siemens engineering rigor, this breaker delivers dependable interruption for demanding commercial and industrial panels.

Key specs at a glance

• Current rating: 40 A
• Poles: 3 (three-pole design for simultaneous phase protection)
• Voltage rating: 600 V
• Part number: CLE63B040

Why this 3-pole, 40 A breaker stands out

In three-phase electrical systems, a 3-pole breaker ensures all phases trip together, preventing unbalanced faults that can damage motors and downstream equipment. The 40 A rating precisely protects branch circuits and motor loads without unnecessary nuisance tripping, making it well-suited for motor control applications, HVAC equipment, and other three-phase processes where reliability matters.

Applications and ideal use cases

• Commercial and light-industrial electrical panels requiring solid three-phase protection
• Motor control centers and equipment rooms with three-phase loads
• HVAC systems, conveyors, and processing lines that run on 3-phase power

Practical installation and maintenance notes

Install the CLE63B040 within compatible Siemens panelboards and distribution systems designed for three-pole protection. It integrates into standard layouts that protect three-phase circuits up to 600 V. For best results, pair this breaker with appropriately sized conductors and a coordinated protection strategy to ensure reliable trips when faults occur.

Why choose Siemens for this protection

Choosing a Siemens circuit breaker means tapping into a lineage of dependable protection and consistent performance in real-world environments. The CLE63B040 is designed to meet the needs of facilities that rely on uninterrupted three-phase power, offering clear, predictable behavior when faults arise and straightforward maintenance when parts need replacement.

Ready to safeguard your three-phase circuits with precise, reliable protection? The Siemens CLE63B040 40A 3-Pole 600 V Circuit Breaker is built to fit and perform where it matters most—keeping systems running smoothly and safely.