Siemens CQD125 - 25 A, 277 V, 1-Pole Circuit Breaker | AmpState

Introducing the Siemens CQD125—a compact, dependable 1-pole molded case circuit breaker designed to protect your electrical circuits with precision. Rated at 25A and 277V, this device is purpose-built for branch circuit overcurrent and short-circuit protection in panelboards and load centers, making it an ideal choice for residential, commercial, and light industrial applications.

• Space-saving molded case design helps you maximize panel space without sacrificing protection or serviceability, making it easier to fit into compact or crowded panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance across temperature variations and fault conditions, reducing nuisance trips and ensuring reliable circuit safeguarding.
• OEM-compatible integration is engineered to pair with matching Siemens load centers and panelboards, ensuring smooth replacement and coordinated electrical protection across your system.
• 277V, 1-pole configuration is tailored for single-phase branch circuits common in commercial spaces, enabling safe control of lighting, outlets, and modest equipment on 277V systems.
• 25A rating provides appropriate protection for moderate-load circuits, helping prevent damage from overcurrent while allowing needed capacity for everyday use.
• Part of the CQD125 family—a proven option for consistent performance in field installations and service upgrades.

Technical snapshot

• Manufacturer: Siemens
• Part Number: CQD125
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 25 A
• Voltage Rating: 277 V
• Number of Poles: 1
• Application: Branch circuit overcurrent and short-circuit protection

This breaker is ideal for electricians and facility managers looking to upgrade panelboards and load centers with a compact, reliable protection device. Use it to safeguard lighting runs, receptacle circuits, and small equipment feeders in commercial and light-industrial environments, or to complete a targeted panel upgrade where space and dependable protection matter most. Its compatibility with Siemens OEM panels means you can expect coordinated performance and straightforward installation, without compromising on safety or longevity.

For installations that demand precise protection in a single-pole 277V circuit, the CQD125 from Siemens delivers a dependable solution. Sold by AmpState, it’s ready to slot into your next panel project and help keep critical circuits protected with confidence.