Electrical circuit protection

Hydraulic-Magnetic Circuit Breaker (HMCB)

Heinemann® patented the first hydraulic-magnetic circuit breaker in 1932, and its current product range continues to deliver unparalleled circuit protection in environments where nuisance tripping caused by temperature changes, shocks, and vibrations is commonplace.

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Hydraulic-Magnetic Circuit Breaker Technology

Discover the reliable technology behind Heinemann hydraulic-magnetic circuit breakers, which consistently deliver electrical protection in extreme environments, high power surge conditions, and applications ranging from manufacturing to data centers and transport.

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Featured Applications

Telecom

Rail

Data centers

Offshore

Machine building

Defense

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When to consider hydraulic-magnetic circuit breakers?

There are many reasons to consider HMCB over other breaker types, especially when…

nuisance tripping is caused by extreme temperatures or large temperature variances.
working with sensitive, high-precision tools and instruments that require protection at the specified rating current, regardless of ambient temperature.
protecting machines with motors that produce high initial power surges.
protection against humidity and corrosion is required.

Selecting the right partner

By choosing to work with Eaton Heinemann, you are not only selecting the original maker of the hydraulic-magnetic circuit breaker but also partnering with a leading global power management organization. Some benefits include:

We have a team of in-house experts ready to bring your projects to life and fulfill your specific requirements.

International reach: Swiss design and R&D, with production in Morocco and Canada, enables global reach.

Eaton Heinemann is vertically integrated, which means we have control over the design, production, testing, and logistics of our products.

Infrastructure to obtain required country and industry certifications and patents. Trust that support and maintenance of products and product ranges are guaranteed for many years to come.

Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.