Siemens BQ2B020H - 20 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens BQ2B020H is a purpose-built 20A, 240V, 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Its rugged bolt-on mounting creates a rigid, vibration-resistant connection to the bus, maintaining precise alignment and consistent electrical performance even in installations with equipment movement or vibration. Key benefits and how they help you

• Secure bolt-on mounting provides a solid, vibration-resistant bus connection, reducing contact looseness and arcing likelihood in busy electrical panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining a thermal element for sustained overloads with a magnetic element for rapid short-circuit disconnections. This means faster isolation of faulted circuits and minimized equipment damage.
• 2-pole design for 240V circuits ensures both live conductors trip together, improving safety and reducing the risk of backfeed or partial energization.
• Molded case construction delivers robust insulation and heat tolerance, suitable for residential panels, commercial panels, and light industrial installations where reliability matters.
• OEM-compatible and easy replacement engineered to fit matching Siemens OEM load centers and panelboards, helping you preserve panel timing and electrical fit during upgrades or replacements.

Who this is for and practical use cases

• Homeowners and residential electricians upgrading or expanding a main or sub-panel where 240V circuits require reliable protection.
• Facility managers overseeing small offices or retail spaces that rely on consistent circuit protection with minimal downtime.
• Contractors wiring lighting, receptacle, or equipment circuits in light commercial or light industrial environments.
• Technicians performing replacements or maintenance in Siemens-compatible panelboards and load centers, seeking a like-for-like bolt-on solution.

Technical snapshot

• Manufacturer: Siemens
• Part Number: BQ2B020H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Why choose the Siemens BQ2B020H for your electrical panel

When reliability, precise protection, and easy integration with existing Siemens equipment matter, the BQ2B020H stands out. It combines a robust mechanical design with a responsive thermal-magnetic trip, so you get predictable performance across everyday loads and fault conditions. Its 20A rating is ideal for safeguarding circuits that require dependable protection without unnecessary tripping, while the 240V, 2-pole configuration ensures safer, simultaneous disconnection of both conductors. Designed for residential, commercial, and light industrial applications, this breaker helps you maintain code-compliant protection with installers and homeowners appreciating the straightforward bolt-on installation and OEM-compatible fit.

Technical details at a glance

• Type: Thermal-magnetic molded case circuit breaker
• Mounting: Bolt-on for a solid, vibration-tolerant connection
• Protection: Overcurrent and short-circuit protection for branch circuits
• Ideal for: Panelboards and load centers in homes, small businesses, and light industrial environments