Siemens HEB1B030B - 30 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens HEB1B030B is a trusted, heavy-duty solution for protecting branch circuits in panelboards and load centers. This 30A, 277V, 1-pole bolt-on molded case circuit breaker is built to deliver dependable overcurrent and short-circuit protection where reliability matters most—on commercial, light industrial, and even some residential applications.

• Secure bolt-on mounting: provides a rigid, vibration-resistant bus connection that stays put through demanding service, reducing wear and maintaining a solid electrical path.
• Thermal-magnetic trip unit: delivers stable, repeatable protection across a range of temperatures and load conditions, helping to prevent nuisance trips while safeguarding circuits.
• OEM-compatible: designed to pair with matching Siemens load centers and panelboards for straightforward upgrades, retrofits, or new installations.
• Versatile 277V single-pole protection: ideal for branch circuits powering commercial lighting, controls, and other single-phase equipment commonly found in offices, retail, and light industrial spaces.
• Key specifications at a glance: 30A, 277V, 1-pole, bolt-on, molded case circuit breaker for reliable overcurrent and short-circuit protection.

In practice, this breaker excels where a secure, long-lasting connection is crucial—areas with panel movement or vibration, installations requiring solid bus engagement, or projects that must align with OEM hardware for dependable performance. The 1-pole design targets single-phase circuits, making it a practical choice for 277V circuits that power lighting, HVAC controls, outlets, and other essential equipment in commercial environments. If you’re assembling or upgrading a panel, the Siemens HEB1B030B offers a precise balance of rugged mounting, predictable protection, and OEM compatibility that helps you meet code requirements while reducing future maintenance. Trust this bolt-on molded case breaker to keep critical circuits protected today and for years to come.