Siemens HFD63B070 - 70 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens HFD63B070 is a 70A, 600V, 3-pole bolt-on molded case circuit breaker built to protect your panelboards and load centers from overcurrent and short-circuit events. Designed for reliability in everyday electrical environments, this breaker delivers a secure, vibration-resistant connection that helps maintain a solid bus interface even in installations with equipment motion or external vibration. Why this breaker stands out - Secure bolt-on mounting for a rigid, vibration-resistant bus connection, reducing the risk of loose contacts that can compromise protection. - Thermal-magnetic trip unit provides stable, repeatable protection across a range of operating conditions. The thermal element responds to sustained overloads, while the magnetic element reacts quickly to short-circuit surges, helping minimize damage to downstream equipment. - 3-pole configuration supports three-phase circuits, making it ideal for commercial and light industrial applications where balanced protection is essential. - 600V maximum rating expands its compatibility with higher-voltage panelfronts and select industrial feeders, delivering broad versatility in mixed-use facilities. - Ready-to-use with matching Siemens OEM load centers and panelboards, ensuring proper fit, performance, and coordinated protection schemes. Real-world use cases - New panel installations in small-to-medium commercial spaces requiring robust three-phase protection. - Retrofit or replacement projects where a compatible Siemens HFD63B070 breaker helps restore proper protection in existing load centers. - Residential-commercial light industrial upgrades where a reliable bolt-on option is preferred for durable bus connections and long service life. What it means for you - Peace of mind from a proven thermal-magnetic protection approach that covers both overloads and short circuits. - A dependable, time-tested solution designed to integrate smoothly with Siemens OEM panelboards and load centers, reducing compatibility concerns during installation. - Clear, actionable specs in a compact package: 70A rating, 600V capability, and a 3-pole design to match your system’s needs. Technical snapshot - Manufacturer: Siemens - Part Number: HFD63B070 - Type: Thermal-magnetic molded case circuit breaker - Amperage Rating: 70 A - Voltage Rating: 600 V - Number of Poles: 3 - Mounting Style: Bolt-on - Application: Branch circuit overcurrent and short-circuit protection This breaker is the right choice when you need dependable, three-phase protection with a secure mounting approach and a protection strategy that remains consistent across operating conditions. Whether you’re outfitting a new panel or upgrading an existing installation, the Siemens HFD63B070 delivers the clarity, compatibility, and protection performance your electrical system relies on.