Siemens HED41B070 - 70 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

The Siemens HED41B070 is a 70A, 277V, 1-pole bolt-on molded case circuit breaker engineered for dependable branch circuit protection in panelboards and loadcenters. Built to handle the demands of commercial and light industrial environments, it delivers reliable overcurrent defense where it matters most.

• Secure bolt-on mounting: Ensures a rigid, vibration-resistant bus connection that stays tight through field conditions, reducing the risk of connection looseness and nuisance trips.
• Thermal-magnetic trip unit: Combines thermal sensing with magnetic short-circuit protection for fast, predictable trips and stable protection performance under varying load conditions.
• OEM-compatible design: Specifically matched to Siemens loadcenters and panelboards for a smooth, trouble-free installation and long-term reliability.
• Versatile 277V single-pole protection: Ideal for distributing high-demand lighting and equipment circuits in residential-adjacent commercial setups and light industrial applications.
• 70A rating, molded case construction: Provides robust protection for a single hot leg in 277V systems, with a compact profile suitable for crowded panels.

This breaker addresses common electrical challenges: it delivers secure connections in environments with vibration, delivers repeatable protection characteristics for critical circuits, and integrates seamlessly with compatible Siemens panelboards. It’s a practical choice when you need dependable overcurrent and short-circuit protection without sacrificing ease of installation.

Technical specifications

• Manufacturer: Siemens
• Part Number: HED41B070
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 70A
• Voltage Rating: 277V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Who this is for

• Electrical contractors and facility managers installing or upgrading panelboards in commercial or light industrial settings.
• Property owners seeking durable, long-lasting protection for high-demand 277V circuits such as lighting, motors, and equipment feeds.
• Installers needing a reliable, OEM-compatible solution that easy to integrate with Siemens loadcenters for consistent performance.

With the Siemens HED41B070, you get more than a breaker—you gain peace of mind knowing your critical circuits are protected by a trusted, purpose-built device designed for robust operation in real-world environments. Add it to your panel today to reinforce safety and reliability across your electrical system.