Siemens CQD245 - 45 A, 480 V, 2-Pole Circuit Breaker | AmpState

Siemens CQD245 — a 45 A, 480 V, 2-pole molded case circuit breaker engineered for dependable branch-circuit protection in panelboards and load centers. Its compact molded case design helps you optimize every inch of panel space, while the thermal-magnetic trip unit delivers stable, repeatable protection as loads rise and fall in busy commercial and light industrial environments.

Key features that protect your investment

• Space-efficient molded case design: Allocates panel space wisely, making it easier to configure and expand distribution in tight electrical rooms.
• Thermal-magnetic trip unit: Combines overload protection with fast short-circuit disconnection for reliable protection across varying load conditions.
• 2-pole operation: Simultaneously interrupts both hot conductors in 480V circuits, enhancing safety and ensuring coordinated shutdown of critical circuits.
• 45A rating: Suited for mid-range branch circuits and feeders, balancing protection with efficient operation on everyday commercial loads.
• 480V voltage rating: Ready for distribution in 480V systems typical of commercial and light industrial installations.
• OEM-compatible panel compatibility: Designed to fit and function with matching Siemens OEM load centers and panelboards, simplifying upgrades and replacements.

Designed for real-world applications

This CQD245 is ideal for facilities where reliable protection is essential—think commercial office spaces, retail locations, and light industrial sites that rely on robust 480V distribution. It shields branch circuits from overloads and short circuits, helping prevent equipment damage, downtime, and costly repairs. With its compact footprint and proven Siemens reliability, it’s a practical choice for both new installations and panel replacements.

Practical use cases

• Protecting distribution feeders and branch circuits in 480V commercial electrical rooms.
• Supporting HVAC, lighting, and receptacle circuits in office buildings and retail spaces.
• Upgrading older panelboards to modern, dependable protection with a compatible CQD-series breaker.
• Safe, reliable protection for light industrial equipment operated on 480V systems.

Why choose the CQD245 for your panel?

• Reliability in a compact form: A space-conscious solution without compromising on protective performance.
• Consistent protection: Thermal-magnetic trip behavior provides predictable response to overloads and faults.
• Seamless compatibility: Engineered to work with Siemens OEM load centers and other compatible panelboards, reducing installation friction and maintenance downtime.

Tips for installation and maintenance

Choose this breaker when your panelboard requires CQD-series compatibility and a 45A, 480V, 2-pole solution. Confirm the circuit’s voltage and amperage align with the CQD245 specifications, and ensure the panelboard is designed to accommodate molded case breakers of this type. For dependable long-term protection, pair the CQD245 with properly rated wiring and adhere to standard electrical practices for mounting, termination, and periodic inspection of the trip mechanism.