Exactly what we needed for a shutdown replacement. No surprises.
Plant · Shutdown
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| Part Number | EE3-B040 |
| Amperes | 40 |
| Poles | 3 |
| Voltage | 240 |
| Product Type | circuit-breaker |
Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Meet the Siemens EE3-B040 Circuit Breaker, a trusted choice for robust industrial protection in demanding electrical systems. With a 40 A rating, 3 poles, and 240 V operation, this unit is built to safeguard three-phase circuits powering motors, drives, and other heavy equipment in manufacturing, facilities, and commercial environments.
This breaker is engineered for concrete, real-world use—whether you’re commissioning new equipment, performing routine maintenance, or replacing a failed component. Its three-pole design ensures comprehensive protection across all live conductors in a three-phase setup, helping prevent damage from overloads and short circuits while enabling safe, swift isolation when servicing systems.
Who benefits most: maintenance teams, panel technicians, and operations managers responsible for reliable power distribution in factories, processing plants, and large facilities. If your project requires a 3-pole, 240 V breaker with a 40 A rating, the EE3-B040 from Siemens is a direct, compatible fit—when verified against your panel’s specifications.
If you need help matching a part number or confirming compatibility, message us and we’ll guide you to the right solution for your application.
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General feedback we often hear from customers purchasing industrial electrical parts.
Exactly what we needed for a shutdown replacement. No surprises.
Plant · Shutdown
Good communication and clear updates while the order was processed.
Project · Coordination
Looks and feels like a proper industrial-grade part. Works as expected.
Service · Field install