Siemens | E61B090 | Circuit Breaker | 90A | 1-Pole | 347V

Experience dependable overcurrent protection with the Siemens E61B090 Circuit Breaker—designed for singular circuits in demanding commercial and industrial environments. This 1-pole unit delivers 90A of protective capability at 347V, making it a precise fit for panels and systems that require solid, reliable interruption on a single leg.

Why this Siemens E61B090 matters for your panel

• Exact match for compatible systems. The E61B090 is identified by part number, so confirming fit and ratings is essential before ordering. Use the part number as the most reliable reference for compatibility with your Siemens panel or distribution equipment.
• High-current single-pole protection. With a 90A ampacity, it protects individual branch circuits or feeders that demand substantial load handling without unnecessary nuisance tripping.
• 347V rated for commercial/industrial environments. Often used in 3-phase commercial power distributions, this rating ensures appropriate performance in higher-voltage installations.
• Maintenance, retrofit, and replacement ready. Whether you’re upgrading an aging panel, retrofitting equipment, or replacing a failed breaker, this unit is built to integrate into compatible Siemens systems with minimal downtime.
• Clear compatibility guidance. The part number is the best reference for compatibility—verify against your panel labeling and service documentation to ensure seamless integration.

Specifications at a glance

• Amperage: 90A
• Poles: 1-Pole
• Voltage: 347V
• Part number: E61B090

Practical use cases

Ideal for protecting a dedicated branch circuit or critical feeders in commercial spaces, laboratories, or light industrial settings where a single high-current leg needs reliable interruption. Use scenarios include:

• Replacement of a failed breaker in panels that specify the E61 family and 347V systems.
• Retrofit projects where a 90A, 1-pole solution aligns with existing wiring and load profiles.
• Maintenance routines that require stocking known-good part numbers for quick field swaps.

Installation notes and best practices

Before purchase, double-check that your panel or distribution panel accepts the E61B090 and that the system voltage aligns with 347V. Keep the part number handy as your primary reference during ordering and installation. When in doubt, consult your panel’s labeling or service manual to confirm compatibility and any panel-specific installation requirements.

With Siemens’ reputation for durable electrical protection, the E61B090 delivers dependable surge interruption and predictable performance, helping keep critical loads safe and electrical systems operating smoothly.