Siemens B290 - 90 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens B290 — a robust 2-pole bolt-on molded case circuit breaker built to guard your electrical system against overcurrent and short-circuit events. Rated at 90A and 240V, it's designed to drop into compatible panelboards and loadcenters with a secure bolt-on mount.

Key benefits:

• Secure bolt-on mounting: Delivers a rigid, vibration-resistant connection to the bus, reducing the risk of connection arcing or looseness in demanding environments.
• Thermal-magnetic trip unit: Provides stable, repeatable protection by responding to both overloads (thermal) and short circuits (magnetic) with predictable trip curves.
• OEM-compatible: Specifically designed to be used with Siemens OEM loadcenters and panelboards, ensuring fit, form, and electrical coordination.
• Versatile application: Suitable for residential, commercial, and light industrial panels, making it a practical upgrade or replacement for existing installations.
• Specs at a glance: 2-pole, 90A, 240V, part number B290, bolt-on mounting, molded case design.

This 90A, 240V unit is ideal for protecting feeders and branch circuits in a range of installations—from home subpanels and heat-load circuits to light commercial equipment racks. By pairing this breaker with compatible Siemens loadcenters, you get cohesive protection with predictable performance across temperature fluctuations and electrical transients.

Why choose the Siemens B290 for your panel? Because it’s built around a dependable thermal-magnetic trip mechanism and a robust bolt-on connection that stands up to vibration, dust, and routine panel work. It’s a targeted solution for professionals and DIYers who value reliability, clear specifications, and seamless OEM compatibility.