Siemens B290H - 90 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens B290H - 90A, 240V, 2-pole bolt-on molded case circuit breaker is built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. This unit is engineered to stay secure in demanding environments, delivering consistent protection when it matters most.

Key differentiators that matter

• Secure bolt-on mounting: delivers a rigid, vibration-resistant bus connection, reducing movement that can compromise continuity and protection over time.
• Thermal-magnetic trip unit: provides stable, repeatable protection by blending thermal overload sensing with fast magnetic interruption for short circuits.
• OEM panel compatibility: designed to pair with Siemens OEM load centers and panelboards for a cohesive, reliable protection system.
• Versatile applications: suitable for residential, commercial, and light industrial environments, protecting critical branch circuits up to 90A at 240V.

What problems does it solve?

In active electrical panels, loose connections and inconsistent protection can lead to nuisance trips or delayed responses to faults. The B290H’s bolt-on design keeps the breaker firmly seated for a stable electrical path, while the thermal-magnetic trip unit responds quickly to short circuits and provides dependable overload protection. The result is minimized downtime, improved safety, and better protection for connected equipment.

Ideal use cases

• Residential service panels with higher demand on a single branch circuit
• Commercial lighting and receptacle circuits in mid-size spaces
• Light industrial equipment distribution where durable, vibration-resistant protection is needed
• Panelboard retrofit projects requiring seamless Siemens OEM compatibility

Specifications at a glance

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

Practical installation tips

• Torque mounting bolts to the panel manufacturer's specifications to maintain a secure connection and reliable performance.
• Verify that the panelboard accepts a 2-pole, 90A, 240V bolt-on molded case breaker from Siemens for a perfect fit.
• Clean and inspect bus connections before installation to ensure optimal contact and minimize arcing risks.
• Assign this breaker to circuits with higher continuous loads or exposure to fault conditions to maximize protective benefits across the panel.