Siemens B370H - 70 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens B370H—a 70 A, 240 V, 3-pole bolt-on molded case circuit breaker crafted for dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Built to stand up to real-world electrical environments, it combines robust mounting with precise protection to keep systems running smoothly.

• Bolt-on mounting: Provides a rigid, vibration-resistant bus connection that stays secure through ongoing operation, reducing the risk of loose connections in demanding panel installations.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by combining thermal long-delay response with magnetic instantaneous trip for fast action on short circuits.
• OEM-compatible design: Engineered to pair with matching Siemens OEM load centers and panelboards, simplifying replacement, upgrades, and cross-compatibility in existing systems.
• Versatile applications: Ideal for residential, commercial, and light industrial environments where reliable protection of branch circuits is essential.
• 3-pole, 240 V protection: Designed for multi‑phase or multi-line configurations, ensuring comprehensive coverage for your distribution panels.

Technical snapshot

• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 70 A
• Voltage rating: 240 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

This breaker is a practical, long‑term solution for electricians and facilities managers seeking dependable protection with straightforward installation. Use it to safeguard feeders, subpanels, and critical equipment in panelboards and load centers where secure mounting, predictable trip performance, and Siemens‑level compatibility matter most. If you’re upgrading a distribution system or replacing an aging unit, the Siemens B370H 70 A, 240 V, 3‑pole bolt-on breaker delivers targeted protection with the reliability you expect from Siemens.