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Overvoltage Protection and Specialty Electronics

Because of how and where they are used, surge protection products must be versatile to ensure safe and error--free protection.

WAGO's overvoltage protection products ensure reliable protection of electrical equipment and electronic systems against the effects of high voltages.

Early Ground Fault Detection

Increasing Availability via Improved and Preventive Maintenance

According to the IEC 60204-1 standard, measures must be taken to reduce the probability of malfunctions due to insulation faults/ground faults in a control circuit. A common option is connecting 0 V to the ground potential in the control circuit, in combination with an upstream fuse.


With the new ground resistance signaling module, WAGO offers the possibility of detecting not only the 0 V grounding, but also the full and automatic undershooting of a non-adjustable, unbalanced insulation resistance between +24 V or 0 V of the supply voltage and ground.


Early detection of imminent ground faults enables improved preventive maintenance, ensuring increased system uptime. A slide switch allows the user to select the grounded/ ungrounded control circuit operating mode. However, the module does not meet the requirements for insulation monitoring devices according to IEC 61557-8.

Ground Resistance Signaling Module

Your Benefits:

  • Automated insulation resistance measurement
  • Early detection of potential ground faults
  • Insulation fault indication via LEDs and potential-free contact

Overvoltage Protection

WAGO’s overvoltage protection modules reliably protect your electrical devices and systems against excessive voltages to ensure system uptime.

Your Benefits:

  • Protect your system against overvoltage via WAGO’s overvoltage protection modules
  • Slim, space-saving design
  • Control operational costs by preventing expensive, unplanned downtime
  • Prevent equipment failure resulting from overvoltage for high operational reliability and system uptime
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Your contact person at WAGO

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Additional service offerings:

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Interface Modules

Safe and maintenance-free connections: WAGO's interface modules allow fast, flexible signal wiring.

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Electronic Interface

Power Supply Modules

Constant supply voltage at any time − worldwide, in the widest range of applications. That’s what makes WAGO’s power supply modules so successful!

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