Siemens ED43B090L - 90 A, 480 V, 3-Pole Circuit Breaker | AmpState

The Siemens ED43B090L is a robust 90A, 480V, 3-pole molded-case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Built for Siemens’ ecosystem, this unit provides consistent trip performance across varied environments with a compact footprint that helps you maximize panel space without sacrificing safety.

• Compact molded-case design minimizes panel intrusion and frees up space for additional circuits in tight enclosures.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding accurately to both overload and instantaneous fault conditions.
• 3-pole, 480V rating ideal for three-phase distribution in commercial and light industrial settings, supporting reliable operation of three-phase equipment.
• OEM compatibility engineered to pair with matching Siemens load centers and panelboards for a seamless, integrated protection system.
• Versatile applications suitable for residential, commercial, and light industrial deployments, covering a wide range of distribution needs.

Why this breaker matters for you

When protecting branch circuits, you don’t just need a breaker — you need predictable performance and reliable coordination with your existing equipment. The ED43B090L delivers:

• Clear, repeatable protection even as ambient temperatures shift, helping prevent nuisance trips while staying responsive to faults.
• Space-efficient design that helps you maximize panel capacity for future expansion without compromising safety.
• Direct compatibility with Siemens panelboards, reducing installation complexity and ensuring consistent electrical characteristics across the system.

Technical snapshot

• Amperage rating: 90A
• Voltage rating: 480V
• Number of poles: 3
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Feeding three-phase equipment in commercial spaces such as offices, retail outlets, or service shops
• Protecting branch circuits in light industrial facilities with moderate three-phase loads
• Updating or expanding existing Siemens panelboards and load centers with a compatible, reliable protection solution

Choose the Siemens ED43B090L for a trusted, space-conscious solution that aligns with your Siemens protection strategy. Its combination of compact design, precise thermal-magnetic protection, and OEM compatibility makes it a practical, long-term choice for maintaining safe and efficient electrical distribution.