Siemens | BQ3B090L | Circuit Breaker | 90A | 3-Pole | 240V

Introducing the Siemens BQ3B090L circuit breaker — a 90 Amp, three-pole protective device designed for 240-volt systems. Built for maintenance, retrofit, and replacement projects, this unit helps you preserve system safety and continuity when upgrading or refreshing three‑phase protection.

Key specifications

• Amperage: 90 A
• Poles: 3-Pole
• Voltage: 240 V
• Part reference: BQ3B090L (best reference for compatibility)
• Designed for maintenance, retrofit, and replacement applications where exact ratings are required

Ideal use cases

• Upgrading three-phase panels in commercial facilities or light industrial environments that require 90 A protection
• Retrofit projects where the existing protection must align with 3-pole, 240 V specifications
• Replacement of worn or outdated breakers in Siemens-compatible panels to maintain circuit protection integrity

Fit, installation and compatibility

• Always confirm fit and ratings before ordering — the BQ3B090L is the best reference for compatibility
• Match the amperage, pole count, and voltage to your panel’s design to ensure proper protection and trip coordination
• Use within panels that accept Siemens BQ3 series breakers and three-phase 240 V circuits

Why choose Siemens BQ3B090L

• Manufactured by Siemens, a trusted name in reliable three-phase protection
• Precise 90 A protection across all three phases helps prevent overcurrent in demanding commercial or light industrial loads
• Clear compatibility reference via the BQ3B090L part number simplifies ordering and maintenance records