Siemens ED43B070 - 70 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens ED43B070 - 70A, 480V, 3-Pole Bolt-On Molded Case Circuit Breaker: Precision protection designed for demanding panel installations. The Siemens ED43B070 delivers dependable branch circuit overcurrent and short-circuit protection for panelboards and load centers in residential, commercial, and light industrial environments. Built with a secure bolt-on mounting and a robust molded case, this 3-pole breaker is engineered to withstand vibration and maintain a rigid, reliable bus connection even in demanding electrical spaces. Why this breaker stands out - Bolt-on mounting for a rigid, vibration-resistant bus connection: When panel reliability matters, a solid mechanical fit reduces loose connections and arc risk, contributing to safer, longer-lasting protection. - Thermal-magnetic trip unit for stable, repeatable protection: The combination of thermal and magnetic trip mechanisms delivers consistent response to overloads and short circuits, helping prevent nuisance trips while safeguarding wiring and devices. - Three-phase compatibility with OEM load centers: Designed to integrate seamlessly with matching Siemens OEM panelboards and load centers, ensuring a clean fit and dependable operation without adapter kits or customizations. - Rated for 70A at 480V: Suitable for medium-to-large branch circuits in commercial and light industrial settings, providing ample protection for equipment and distribution feeders. - Molded-case construction for durability: A rugged enclosure that stands up to daily switching and environmental conditions inside electrical rooms and service panels. Who benefits most - Electricians and facility managers tasked with upgrading, replacing, or expanding panelboard protection in commercial or light industrial installations. - Projects needing a reliable, code-compliant 3-pole solution that fits Siemens OEM panels without compatibility concerns. - Situations where a bolt-on solution is preferred for superior mechanical stability and reduced vibration-induced wear. Use cases and practical applications - Upgrading aging panelboards to meet current protection standards in office buildings, retail spaces, and light manufacturing facilities. - Protecting three-phase feeders and equipment in commercial electrical rooms where panel vibrations are a consideration. - Replacing a worn or incompatible breaker with a Siemens ED43B070 to restore reliable protection and seamless OEM compatibility. Technical specifications at a glance - Manufacturer: Siemens - Part number: ED43B070 - Type: Thermal-magnetic molded case circuit breaker - Amperage rating: 70A - Voltage rating: 480V - Poles: 3 - Mounting style: Bolt-on - Application: Branch circuit overcurrent and short-circuit protection Practical guidance for installation and compatibility - Verify that your panelboard is designed to accept a 3-pole, bolt-on molded case circuit breaker with a 480V rating. - Pair with compatible Siemens OEM load centers to ensure precise fit and intended trip curves. - Follow standard electrical safety practices and manufacturer installation instructions to ensure secure mounting and proper thermal clearance. The Siemens ED43B070 is more than just a breaker—it’s a purpose-built protection solution for reliable electrical distribution in demanding environments.