Siemens ED43B090 90A 3P 480V Circuit Breaker, Bolt-On | AmpState

The Siemens ED43B090 90A 3P 480V Bolt-On Circuit Breaker from AmpState is built for reliable circuit protection in panelboards, load centers, and electrical distribution networks. Designed for technicians who value a direct part-number match, this three-pole breaker delivers robust performance in demanding, three-phase installations.

Technical snapshot

• Amperage: 90 A
• Poles: 3
• Voltage rating: 480V
• Mounting: Bolt-On
• Manufacturer: Siemens
• Part number: ED43B090

Key benefits

• Secure, bolt-on mounting provides a durable, vibration-resistant connection ideal for demanding electrical environments.
• Three-pole protection designed for 480V three-phase systems, ensuring consistent, coordinated protection across all phases.
• Direct part-number compatibility supports fast, precise replacements for panel builders and maintenance teams.
• Smart choice for spare inventory, helping facilities minimize downtime when protection devices need replacement.

Who should consider this breaker

• Electrical maintenance teams managing panelboards and load centers in commercial or industrial settings.
• Panel builders and OEMs seeking reliable, standard components with straightforward sourcing.
• Facilities managers stocking critical spares to reduce downtime during protection device failures.

Use scenarios

Replace aging or failed breakers in existing 480V, 3-phase installations; upgrade protection in new panel builds; maintain consistent part-numbering across stock to simplify procurement and service workflows.

Compatibility & support

If you need help matching a part number or confirming compatibility, send us a message — AmpState specialists are ready to verify fit and guide you to a precise match for your panelboard or distribution setup.

Secure this Siemens ED43B090 90A 3P 480V Bolt-On Circuit Breaker today and streamline your electrical protection strategy with a trusted, easy-to-source component from AmpState.