Siemens CQD250 - 50 A, 480 V, 2-Pole Circuit Breaker | AmpState

Siemens CQD250, a 50A, 480V, 2-pole molded case circuit breaker, is engineered to shield panelboards and load centers from overcurrent and short-circuit events with precision and reliability. Its compact molded-case design maximizes panel space, making it a smart choice for densely packed electrical installations.

The thermal-magnetic trip unit delivers stable, repeatable protection across varying temperatures and loads, balancing safety with long-term reliability and minimizing nuisance trips that can disrupt operations.

Designed for seamless compatibility, the CQD250 is crafted to fit with matching OEM load centers and panelboards, ensuring proper mounting, alignment, and coordinated protection in your electrical system.

Ideal for residential, commercial, and light industrial applications that deploy 480V circuits, this breaker provides dependable two-pole protection where it matters most.

Key features

• Compact molded-case design: preserves panel space and simplifies installation in tight enclosures.
• Thermal-magnetic trip unit: delivers fast, stable protection against overcurrent and short circuits, with consistent performance across conditions.
• 480V, 2-pole, 50A rating: rugged, high-voltage protection tailored for demanding branch circuits.
• OEM panel compatibility: designed to match Siemens panelboards and load centers for reliable coordination.
• Versatile applications: suitable for residential, commercial, and light industrial electrical systems requiring robust protection.

Technical specifications at a glance

• Manufacturer: Siemens
• Part number: CQD250
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 50 A
• Voltage rating: 480 V
• Number of poles: 2
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical tips

• Protect 480V branch circuits feeding equipment in light industrial panels, including pumps, fans, conveyors, and control gear.
• Install in commercial electrical rooms powering lighting, receptacle banks, and HVAC controls where space is at a premium.
• In residential settings, apply to dedicated 480V services or specialty installations that require robust two-pole protection with a compact footprint.
• Ensure compatibility with your OEM load center, verify physical fit, and follow industry standards during installation; rely on a qualified electrician for wiring and commissioning tasks.