Siemens QJ22B090H - 90 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens QJ22B090H is a 2-pole, 90A, 240V bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and load centers. This device sits at the heart of your electrical protection strategy, guarding 240V circuits from overcurrent and short-circuits with precision and reliability.

Key advantages

• Bolt-on mounting provides a secure, rigid bus connection that resists vibration and connection drift in cabinets and service panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance across a range of load conditions, responding quickly to faults while avoiding nuisance trips.
• OEM-compatible design works with matching Siemens load centers and panelboards, ensuring a cohesive, reliable protection system.
• Versatile 2-pole, 90A, 240V protection ideal for 240V branch circuits in residential, commercial, and light industrial settings.
• 2-pole configuration ensures simultaneous disconnect of both live conductors, enhancing safety and fault clearing for 240V equipment.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: QJ22B090H
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 90A
• Voltage rating: 240V
• Number of poles: 2
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who is this product for?

Ideal for residential electrical panels upgrading or expanding, commercial panels serving HVAC and lighting, and light industrial applications where reliable 240V protection is essential. If your panelboard requires a Siemens QJ bolt-on breaker, the QJ22B090H is a direct-fit choice that maintains a unified protection strategy across the system.

Practical tips for installation and use

• Verify panelboard compatibility with Siemens QJ-series bolt-on breakers before installing.
• Match the 90A rating to your circuit load to minimize nuisance trips while protecting equipment.
• Use the bolt-on mounting to ensure a solid connection and reduce the need for retightening due to vibration over time.