Surge and overcurrent protection for increased system reliability

Maximizing the reliability of systems to maintain uptime is extremely important. Applications that involve human safety and generate revenue demand operational integrity and require protection from transient surges and overcurrent conditions that can interrupt such processes.

Surge protective devices and circuit breakers from Phoenix Contact address these critical needs through a wide range of products with industry-leading features to enable data-driven decisions.

Circuit breakers

Having the ability to remove a faulty circuit quickly is imperative to maintaining the uptime of your systems. Phoenix Contact offers a wide variety of circuit protection products designed to mitigate the effects of short circuit and thermal overload conditions.

These products are based on one of four different tripping technologies:

  • Electronic – highly robust DC overcurrent protection
  • Thermal – cost-effective thermal overload technology
  • Thermal-magnetic – traditional breaker technology for general purpose applications
  • Hydraulic-magnetic – rugged design for hazardous locations and harsh environments

Surge protection devices

When identifying the necessary surge protection for your application, it is important to consider the Circle of Protection (CoP). This concept allows you define the application you want to protect, evaluate threats from each conductor, and decide on the appropriate types of surge protection.

Threats from transients can be mitigated with the following four types of surge protection devices (SPDs):

  • Power SPDs – high performance surge protection for power systems
  • Data SPDs – lossless surge protection for data and communication lines
  • Signal SPDs – surge protection for analog and digital signals
  • Coaxial SPDs – surge protection for wireless antennas and coaxial systems


8240 Parkhill Drive
Milton, Ontario L9T 5V7



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