Siemens B245HH - 45 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens B245HH, a 45A, 240V, 2-pole bolt-on molded case circuit breaker built to protect your panels with precision and reliability. Engineered for steady performance in demanding environments, it delivers dependable branch circuit overcurrent and short-circuit protection wherever you install it—from home panelboards to light-commercial and light-industrial setups.

Why this breaker stands out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight through equipment start-ups and everyday operation.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overloads and short circuits, helping prevent damage to wiring and connected equipment.
• OMS-ready compatibility designed to pair with matching OEM Siemens load centers and panelboards for a streamlined, worry-free installation.
• Versatile applications ideal for residential, commercial, and light industrial electrical systems needing reliable 2-pole 240V protection.

Technical at a glance

• Manufacturer: Siemens
• Part Number: B245HH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 45A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Residential panels protecting 240V branch circuits such as larger air conditioning units, pool equipment, or baseboard heating circuits up to 45A.
• Commercial panelboards requiring a robust, bolt-on 2-pole breaker that aligns with Siemens OEM infrastructure.
• Light industrial setups where dependable protection for 240V feeders and 2-pole circuits is essential.

Choosing the Siemens B245HH means investing in a proven, purpose-built solution that aligns with Siemens panel systems, delivers consistent trip performance, and stands up to the rigors of everyday use. If you’re upgrading an existing Siemens installation or stocking spare breakers for compatible panels, this 45A, 240V, 2-pole bolt-on unit is a precise, reliable fit.