Varistor protection is RAB-PD-X07-A1, RAB-PD-X08-A1 and RAB-PD-X51-X1 used in the power distribution panels as the 3rd level of overvoltage protection in compliance with appropriate norm, accordingly as a protection placed right in front of the device and eliminating the remnant voltage, which the previous steps of house wiring surge protection failed to break off. The installed surge protection is in form of detachable block, which can discharge the pulse overvoltage and endanger the connected devices to a protective earth conductor. Therefore, it only operates on the so-called three wire distribution system with yellow-green protective conductor. If the overvoltage is really large, the surge protection module would get damaged and the control green light on the module would switch off. The power distribution panel would still be working, however, it would no longer protects against the overvoltage and it is necessary to replace the surge protection module.
Classification in compliance with norms: ČSN EN 61643-11…….type 3 IEC 61643-1…………….class III VDE 0675-6…………….class D
Surge protection protects the connected devices against pulse overvoltage using varistors, which resistance falls with increasing voltage.
Rating voltage Un
Maximum persist working voltage
Standard discharge current (8/20?s)
Nominal discharge current (8/20 ?s)
Residual voltage (8/20 ?s)
Maximum working current
Manage Cookie Consent
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.