Siemens | E43B070 | Circuit Breaker | 3-Pole | 480V | 18kA | Bolt-On

Siemens E43B070 plays a critical role in safeguarding 480V electrical systems with a reliable 3-pole configuration and an 18kA interrupting capacity. Designed for bolt-on mounting, this circuit breaker streamlines installation in retrofit or replacement projects, helping maintenance teams minimize downtime without compromising safety or performance.

• Poles: 3-Pole
• Voltage rating: 480V
• Interrupting capacity: 18kA
• Mounting: Bolt-On
• Part number: E43B070
• Application: Ideal for maintenance, retrofit, and replacement in industrial panels and switchgear

Ideal for

• Industrial control panels, switchgear, and service panels that run on 480V three-phase systems
• Retrofit projects where exact Siemens specifications are required to ensure compatibility
• Replacement of worn or tripped breakers to restore protected circuits quickly
• Routine maintenance and spare-part planning to minimize downtime during service outages

What sets the E43B070 apart

• Exact fit and compatibility when the part number E43B070 is used, simplifying procurement and record-keeping
• Bolt-on design that enables faster, secure installation with reduced field wiring complexity
• Strong 18kA interrupting capacity for reliable protection against high fault currents
• Proven Siemens reliability that’s respected in industrial environments, ensuring long-term performance in demanding applications

Fitment and installation tips

Notes: Confirm fit and ratings before ordering—the part number is the best reference for compatibility. Follow all local electrical codes and Siemens installation guidelines. Before work begins, isolate power and use appropriate PPE. During installation, ensure secure bolt-on mounting and verify proper wiring termination to maintain dependable protection.

How this helps your operation

With the Siemens E43B070, you gain a dependable, field-proven solution for protecting 480V circuits in manufacturing floors, processing lines, and automation control panels. Its bolt-on versatility supports efficient serviceability, while its 3-pole design ensures comprehensive protection across three phases, delivering peace of mind in critical power environments.