Siemens B340HH - 40 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens B340HH—a 40 A, 240 V, 3-pole bolt-on molded case circuit breaker designed to safeguard your electrical system with precision and reliability. Built for dependable branch circuit overcurrent and short-circuit protection, this unit is a trusted choice for panelboards and load centers in homes, businesses, and light industrial settings.

Secure bolt-on mounting for a rigid, vibration-resistant connection

The bolt-on mounting style delivers a steadfast, vibration-resistant bus connection that stays tight even in demanding environments. This means fewer service calls for loose connections and a more consistent protection profile across your panelboard or load center.

Thermal-magnetic trip unit for stable, repeatable protection

Equipped with a thermal-magnetic trip mechanism, the B340HH responds quickly to overloads and short circuits, providing reliable, repeatable protection without nuisance trips. Practical protection across varying loads and conditions helps keep equipment and circuits safer and more predictable.

OEM-compatible for seamless integration

Designed to pair with matching Siemens OEM load centers and panelboards, this 3-pole breaker fits right into existing systems, simplifying replacement and maintenance. Its compatibility ensures you can upgrade or service panels with confidence, without sacrificing performance or safety.

Ideal for a wide range of applications

• Residential panelboards needing solid branch circuit protection for multi-wire or three-phase setups
• Commercial distribution boards where dependable short-circuit protection is essential
• Light industrial circuits that demand robust protection in motor start-up or loading scenarios

Technical snapshot

• Manufacturer: Siemens
• Part Number: B340HH
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40 A
• Voltage Rating: 240 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical benefits that matter

• Long-term reliability in demanding environments thanks to secure mechanical mounting
• Consistent protection performance with a trusted thermal-magnetic trip mechanism
• Simple compatibility with Siemens panel products to reduce installation time and complexity

Choose the Siemens B340HH for a dependable, code-compliant solution that protects your electrical system where it matters—at the point of distribution in panelboards and load centers. Its combination of secure mounting, precise protection, and OEM compatibility makes it a smart upgrade for both new installations and service upgrades, delivering peace of mind through reliable performance day after day.