Siemens CQD250 - 50A, 2-Pole, Circuit Breaker

Meet the Siemens CQD250 50A, 2-Pole Circuit Breaker—designed to provide fail-safe overcurrent protection where it matters most. This compact, two-pole device is built for dependable performance in panelboards, switchboards, and control panels, delivering reliable interruption of fault currents to keep your electrical systems safe and up and running.

Why choose the CQD250

• Precise 50A protection for feeders, branch circuits, and motor-related loads, helping prevent insulation damage, overheating, and downstream equipment faults.
• Two-pole design ensures simultaneous disconnection of both conductors in multi-wire circuits, enhancing safety and reducing the risk of neutral overcurrent conditions.
• Versatile installation compatible with a variety of distribution gear—panelboards, switchboards, and control panels—making it a flexible choice for new builds and panel upgrades alike.
• Industrial and commercial ready purpose-built for demanding environments found in manufacturing plants, facilities, and OEM electrical cabinets.
• Simple, reliable operation backed by Siemens’ engineering standards, providing predictable protection and straightforward maintenance in daily operations.

Ideal applications

• Industrial distribution panels where consistent overcurrent protection is critical for uptime.
• Motor control centers and machinery enclosures that require fast, safe interruption of fault currents.
• Commercial electrical cabinets and switchrooms that demand compact, dependable protection in restricted spaces.
• OEM equipment assemblies where a robust 2-pole breaker fits into compact control architectures.

How it protects your system

The CQD250 detects overcurrent events and promptly interrupts the circuit, safeguarding conductors, devices, and wiring from damage. By protecting both poles in a circuit, it helps prevent dangerous arcing and minimizes the chance of conductive faults propagating through downstream equipment. In everyday use, this translates to fewer nuisance trips and more predictable protection during fault conditions.

Technical snapshot

• Current rating: 50 A
• Poles: 2-Pole
• Type: Circuit Breaker
• Applications: panelboards, switchboards, control panels; suitable for industrial, commercial, and OEM environments requiring dependable overcurrent protection

Choose the Siemens CQD250 when you need a proven, two-pole protection solution that fits into standard electrical assemblies and delivers consistent performance in demanding settings. It’s a practical, reliable choice for safeguarding power distribution and motor circuits while supporting smooth, uninterrupted operation across your facility.