Understanding Hydraulic Magnetic Circuit Breakers: Applications and Advantages

Sponsored by Sager Electronics

In the realm of electrical safety and efficiency, the latest advancement comes in the form of hydraulic magnetic circuit breakers, a technology set to redefine circuit protection standards. This article delves into the core aspects and advantages of these breakers, which stand out from traditional thermal and thermal-magnetic circuit breakers.

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What Sets Hydraulic Magnetic Breakers Apart?

Unlike their predecessors, hydraulic magnetic circuit breakers operate independently of ambient temperature fluctuations. This unique feature ensures consistent performance in a variety of environmental conditions, making them reliable for applications where temperature control is challenging or impossible. Their operation range extends from -40 to +80 degrees Celsius, catering to both extremely cold and hot conditions.

Applications and Advantages

Hydraulic magnetic circuit breakers are versatile, finding applications in areas such as portable gensets, datacom and telecom equipment, military uses, and power distribution units. These breakers are particularly suitable for harsh outdoor environments and sensitive devices that require precision in current tripping rather than temperature-induced tripping.

The significance of these breakers becomes apparent in scenarios with inrush currents, commonly observed during motor startups. The ability to customize hydraulic magnetic breakers for specific inrush current conditions helps avoid nuisance tripping while providing adequate protection. This customization is vital for equipment integrity, especially in high-value or critical systems where overcurrent or undercurrent could lead to significant damage or operational failures.

Customization and Certification

Hydraulic magnetic circuit breakers offer extensive customization options. Users can choose from a range of trip values, toggle options, termination types, and mounting methods. This adaptability allows for tailored solutions catering to specific needs across various applications.

Certifications are crucial in the circuit protection industry. These breakers meet various certification standards such as UL, CSA, and TÜV, ensuring compliance across different regions and applications. This aspect is particularly important when dealing with equipment for international use or in specialized sectors like the military.


The emergence of hydraulic magnetic circuit breakers marks a significant advancement in circuit protection technology. Their temperature independence, adaptability to harsh environments, and customization options make them a superior choice in diverse applications. As the world becomes more electrified and the demands on electrical systems increase, the need for reliable and efficient circuit protection solutions like hydraulic magnetic circuit breakers becomes ever more critical. With these breakers, industries can expect enhanced safety, improved operational efficiency, and reduced risks associated with electrical systems.

Learn More:

  • https://www.sager.com/manufacturers/sensata-airpax
  • https://www.sensata.com/products/circuit-breakers/hydraulic-magnetic-circuit-breakers


  • Andrew Thompson, Product Manager, Electrical Protection & Power Controls Sensata Technologies
  • Brian Moran, Marketing Manager, Sager Electronics
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