Siemens B380H - 80 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens B380H—a steadfast three-pole bolt-on molded case circuit breaker crafted to protect your electrical systems with precision and reliability. Designed for dependable branch-circuit overcurrent and short-circuit protection, this 80 A, 240 V unit fits seamlessly into panelboards and loadcenters, delivering consistent performance across residential, commercial, and light industrial environments. Available through AmpState, it’s engineered to integrate smoothly with matching OEM equipment for a clean, dependable setup.

• Amperage rating: 80 A
• Voltage rating: 240 V
• Poles: 3
• Mounting style: Bolt-on, molded case design
• Trip mechanism: Thermal-magnetic, delivering stable overload protection and rapid short-circuit response
• Application: Suitable for residential, commercial, and light industrial panelboards and loadcenters
• Manufacturer/compatibility: Siemens B380H; compatible with matching OEM load centers and panelboards

Why the B380H stands out

The B380H goes beyond just meeting basic specs. Its secure bolt-on mounting creates a rigid, vibration-resistant bus connection, minimizing the risk of loosened connections that can lead to nuisance trips or arcing in demanding environments. The thermal-magnetic trip unit provides stable, repeatable protection under varying loads—sensitive enough to trip quickly during short circuits, yet tolerant enough to withstand normal inrush currents without false trips.

Designed for compatibility and ease of integration, this breaker fits into Siemens-compatible panelboards and load centers without custom adapters or retrofits. That means faster installations, fewer compatibility worries, and a clean, two-step upgrade path for upgrading older panels or expanding electrical systems.

Who should consider the Siemens B380H

• Electrical technicians upgrading or expanding residential service panels, commercial subpanels, or light industrial distributions.
• Facility managers looking for dependable, long-term protection against overcurrent and short circuits.
• Specifiers and installers needing a unit that aligns with Siemens OEM hardware for a consistent, code-compliant installation.

How this breaker protects your system

In normal operation, the thermal element monitors sustained overloads, while the magnetic element responds instantly to high-current faults. This dual-action protection minimizes the risk of wiring damage, equipment failure, and fire hazards. With its 80 A rating, the B380H is tailored for circuits that require robust protection without compromising on performance or speed—allowing service continuity for essential loads while safeguarding conductors and devices downstream.

Practical tips for installation and use

• Pair with Siemens-compatible panelboards and load centers to ensure optimal contact and thermal performance.
• Verify that the bolt-on mounting hardware and bus connections are clean and free of corrosion before installation to maximize vibration resistance and reliability.
• Consider coordinating with the rest of your protection scheme—pair with matching upstream devices and proper labeling for clear, safe operation.
• Keep a spare B380H on hand for planned retrofits or panel upgrades to minimize downtime during service work.

Technical snapshot

Part number: B380H • Type: Thermal-magnetic molded case circuit breaker • Mounting: Bolt-on • Application: Branch circuit overcurrent and short-circuit protection • Compatibility: Siemens OEM load centers and panelboards

For professionals seeking a reliable, easily integrable solution that aligns with Siemens’ OEM ecosystem, the Siemens B380H 3-Pole Bolt-On Circuit Breaker delivers precise protection, robust mounting, and straightforward installation—making it a trusted choice for a wide range of electrical installations.