Siemens HED41B100 - 100 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens HED41B100 — 100 A, 277 V, 1-Pole Bolt-On Circuit Breaker

Designed for dependable branch circuit protection in panelboards and loadcenters, this Siemens molded case circuit breaker combines robust construction with precise, repeatable protection. The 100 A rating and 277 V capability make it an ideal choice for commercial and light industrial applications, as well as targeted residential setups that demand reliable performance for higher-voltage circuits.

Why this breaker stands out

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that remains tight through equipment vibrations and temperature changes.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overloads and short circuits, helping to minimize nuisance trips while safeguarding connected loads.
• OEM-compatible design ensures seamless compatibility with matching Siemens load centers and panelboards, simplifying replacement and upgrades.
• Versatile voltage and application range—277 V rating supports lighting, commercial circuits, and other higher-voltage branch circuits in a variety of settings.
• 1-Pole configuration provides targeted protection for individual branch circuits, enabling flexible panel layouts and selective coordination.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HED41B100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 277 V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Upgrading or provisioning branch circuits in commercial lighting runs and small industrial feeders that operate at 277 V.
• Replacing aged or failed breakers within compatible Siemens panelboards and loadcenters to restore reliable protection.
• New installations where a compact, single-pole, bolt-on breaker is required for precise circuit isolation and protection.

Practical considerations

To maximize performance, pair this breaker with matching OEM Siemens load centers or panelboards. Ensure the target panel supports 277 V circuits and is designed for bolt-on molded case breakers. If you’re upgrading existing protection, verify that the new breaker’s amperage and trip characteristics align with your load profile and coordination requirements.

With the Siemens HED41B100, you’re choosing a proven solution that prioritizes reliable protection, solid mechanical mounting, and seamless compatibility—delivering confident, long-term safety for your electrical system. Available from AmpState, this part helps you keep panels performing at their best while simplifying procurement and maintenance.