Siemens BQD225 - 25 A, 480 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens BQD225 two-pole bolt-on molded case circuit breaker delivers reliable branch circuit protection for 25 A at 480 V. Built for panelboards and load centers, it ensures safe, efficient operation in residential, commercial, and light industrial environments.

Secure bolt-on mounting for rigid connectivity

The bolt-on design provides a solid, vibration-resistant bus connection, reducing movement that can lead to loose contacts over time in panels placed in busy mechanical spaces or under heavy loads.

Thermal-magnetic protection for stable, predictable trips

The integrated thermal-magnetic trip unit combines heat-based overload protection with instantaneous magnetic trip for short-circuit events, delivering consistent protection and minimizing nuisance trips across temperature and load variations.

Designed for compatibility and easy replacement

Engineered to work with matching Siemens OEM load centers and panelboards, this breaker slot-in replacement helps ensure optimal performance and electrical coordination with existing equipment.

Ideal for a range of applications

With 25 A capacity, 480 V rating, and two poles, it is well-suited to protect circuits feeding lighting, outlets, HVAC controls, small motors, and other critical loads in homes, offices, retail spaces, and light industrial facilities. Use cases include retrofits, service upgrades, and new panel installations where robust, secure protection is required.

Key specifications

• Manufacturer: Siemens
• Part number: BQD225
• Type: Thermal-magnetic molded case circuit breaker
• Amperage: 25 A
• Voltage: 480 V
• Poles: 2
• Mounting: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips for installation and use

• Ensure your panelboard or load center is rated for 480 V and supports Siemens BQD-series bolt-on breakers.
• Confirm electrical coordination with adjacent breakers and devices to maintain safety margins and selectivity.
• Tighten mounting bolts and conductors to the panel manufacturer's torque specs to maintain a solid connection in environments with vibration or heat cycling.
• Use as a direct replacement where a 2-pole 25 A, 480 V bolt-on breaker is required to restore or upgrade circuit protection efficiently.