Siemens HED43B070 - 70 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens HED43B070 is a rugged 3-pole molded case circuit breaker (MCCB) engineered for dependable branch-circuit protection in panelboards and load centers. With a 70A rating and a 480V maximum, it confidently supports modern 3-phase loads while delivering reliable safety and performance.

Key features that matter in the field

• Bolt-on mounting: Secure, rigid bus connections that resist vibration and maintain electrical integrity in demanding environments.
• Thermal-magnetic trip unit: Provides stable, repeatable protection for both overloads and short circuits, reducing nuisance trips and protecting critical equipment.
• Panel compatibility: Designed to work with matching Siemens OEM load centers and panelboards, enabling straightforward replacement or upgrades.
• Versatile applications: Ideal for residential, commercial, and light industrial settings where reliable 3-phase protection is essential.

Why this 3-pole 480V bolt-on breaker stands out

When protecting feeders, motors, and distribution circuits, consistency matters. The HED43B070 maintains protective performance across varying temperatures and vibration, helping prevent unexpected outages. Its 480V rating makes it a strong fit for higher-voltage panel systems and three-phase installations, while its Siemens compatibility ensures a seamless integration into existing or new panelboards.

Use cases and installation scenarios

Ideal for:

• Three-phase motor circuits in light industrial equipment
• Commercial building feeders and HVAC systems
• Residential-commercial projects requiring higher voltage distribution
• Retrofits or upgrades in panelboards that need a bolt-on MCCB with Siemens compatibility

Technical specifications

• Manufacturer: Siemens
• Part Number: HED43B070
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 70A
• Voltage Rating: 480V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

With its combination of secure bolt-on mounting, precise thermal-magnetic protection, and seamless Siemens compatibility, the HED43B070 delivers dependable performance where it truly matters—keeping circuits protected and equipment running smoothly across a range of residential, commercial, and light industrial environments.