Siemens QJ23B200 - 200 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens QJ23B200—a rugged 200A, 240V, 3-pole bolt-on molded case circuit breaker built to safeguard your electrical distribution. Designed for dependable branch circuit overcurrent and short-circuit protection, it excels in panelboards and loadcenters where reliability matters most.

Why this breaker stands out

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, keeping critical power paths solid even in environments with equipment movement or vibration.
• Thermal-magnetic trip unit provides stable, repeatable protection performance across a wide range of fault conditions, helping prevent nuisance trips and safeguarding connected equipment.
• OEM-compatible design ensures seamless integration with matching Siemens panelboards and loadcenters, reducing installation guesswork and compatibility concerns.
• Three-pole configuration ideal for three-phase distribution, delivering consistent protection across all phases in commercial and light industrial settings.

Key specifications

• Manufacturer: Siemens
• Part Number: QJ23B200
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 200A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for

Residential, commercial, and light industrial environments where reliable protection of distribution circuits is essential. Use in panelboards and loadcenters to safeguard feeders, subpanels, and critical equipment from overloads and faults.

Use cases and practical benefits

• Protect three-phase equipment and circuits in commercial spaces such as offices, retail, and small manufacturing setups.
• Upgrade or replace aging breakers in panelboards to restore targeted short-circuit protection and improve system reliability.
• Maintain consistent trip behavior in environments with variable loads, thanks to the thermal-magnetic trip mechanism.

Installation and maintenance notes

Ensure proper bolt-on mounting to achieve the intended rigid bus connection. Verify compatibility with your Siemens panelboard or OEM loadcenter before installation, and follow standard electrical safety practices during setup and servicing.