Siemens | EE3B040 | Circuit Breaker | 40A | 3-Pole | 240V | 10kA | Bolt-On

Siemens EE3B040 Circuit Breaker delivers reliable protection for 240V, three-phase electrical systems with a solid, bolt-on mounting design. Built for maintenance, retrofit, and replacement projects, this 3-pole 40A device brings exact Siemens specs to your panel, helping you maintain safe, continuous operation in demanding environments.

Key specifications

• Amperage: 40A
• Poles: 3-Pole
• Voltage: 240V
• Interrupt rating: 10kA
• Mounting: Bolt-On
• Part number: EE3B040

Who this is for

Facilities managers, electrical contractors, and maintenance teams who work with Siemens panels in commercial or light industrial settings will appreciate the clean compatibility of the EE3B040. When you need a precise match for a retrofit or replacement, this 3-pole, 40A breaker provides a straightforward path to restoring protection without unnecessary fittings or guesswork.

Why this bolt-on breaker stands out

• Secure, vibration-resistant mounting: The bolt-on design creates a robust connection that stays clamped in place in demanding environments, reducing the likelihood of loose connections over time.
• Dedicated Siemens compatibility: Engineered to align with Siemens panel architectures, ensuring reliable operation and easier serviceability when you’re maintaining complex electrical systems.
• Clear signaling for medium-load circuits: With 40A capacity and 240V operation, it’s well-suited for protecting motors, HVAC feeders, and other multi-phase loads common in commercial spaces.
• High fault protection: The 10kA interrupt rating provides a strong margin for fault current scenarios typical of industrial and mechanical equipment, helping to isolate issues quickly and safely.

Installation and compatibility notes

Before ordering, confirm fit and ratings to ensure seamless replacement. The part number EE3B040 is your best reference for compatibility, and using this exact model helps minimize surprises during installation. Follow your panel manufacturer’s torque and installation guidelines to maximize connection integrity and safety.

Practical use cases

• Retrofit projects in service entrances or distribution panels where a 3-pole, 40A 240V breaker is required.
• Replacement in Siemens-equipped panels where maintaining identical protection characteristics simplifies maintenance history and spare parts inventory.
• Protection for three-phase feeders powering motors, compressors, or 240V-driven equipment in commercial facilities.

Equip your panel with the Siemens EE3B040 to ensure precise protection, reliable operation, and a straightforward path to future serviceability in any 3-phase 240V circuit environment.