Siemens CQD160 - 60 A, 277 V, 1-Pole Circuit Breaker | AmpState

Meet the Siemens CQD160 — a dependable 60A, 277V, 1-Pole molded case circuit breaker designed to protect every branch of your electrical system. Built for panelboards and loadcenters, this breaker delivers precise, reliable overcurrent and short-circuit protection where it matters most.

Why engineers and electricians choose CQD160

• Compact molded-case design maximizes panel space, making it easier to fit multiple protection devices in tighter enclosures without compromising performance.
• Thermal-magnetic trip unit offers stable, repeatable protection—collects accurate overload data and responds quickly to short circuits, reducing nuisance trips while maintaining safety.
• OEM compatibility designed to work with matching Siemens OEM load centers and panelboards, ensuring a seamless fit and consistent trip characteristics.
• 277V suitability ideal for commercial lighting and distribution circuits where line-to-neutral voltages commonly run at 277V, plus standard 60A branch-circuit protection.
• Versatile applications appropriate for residential, commercial, and light industrial environments where reliable branch-circuit protection is critical.

Key specifications

• Manufacturer: Siemens
• Part Number: CQD160
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 60A
• Voltage Rating: 277V
• Number of Poles: 1
• Application: Branch circuit overcurrent and short-circuit protection

Who and where it fits best

• Electricians upgrading or expanding panelboards in commercial spaces with 277V lighting or power distribution needs.
• Residential installations requiring dedicated protection for specific branch circuits within Siemens-compatible panels.
• Light industrial settings where compact protection devices help maximize panel density without sacrificing safety.

Practical use and installation tips

• Pair the CQD160 with Siemens OEM load centers and panelboards to ensure optimal fit and trip performance.
• Verify that the protected circuit’s voltage and load align with the 277V, 60A rating to prevent nuisance trips and maintain system reliability.
• Follow standard electrical code practices for mounting, wiring, and torque specifications to ensure a secure, long-lasting installation.
• Consider this 1-pole solution when only a single hot conductor needs protection, preserving space for other devices in the panel.

Designed to deliver predictable protection where reliability matters—Siemens CQD160 is a smart, space-efficient choice for panelboards and loadcenters that demand consistent performance, durability, and compatibility with Siemens’ own electrical ecosystem.