4-pole surge protector, 3-phase, class BandC, 30-60 kA, for mounting on the TH35 rail. The surge protector, lightning arrester and surge protector is a device designed to protect electrical apparatus against transient surges, limiting the duration and frequency of the downstream current. Overvoltages can occur during np. turning on or off an unloaded overhead line or when lightning strikes an overhead line, they can cause damage to insulation and other network elements. Three-phase limiters occupy four modules in the electrical switchgear. The "1and2" type protector (former class BandC) provide protection against atmospheric surges caused by lightning strikes on objects located in the vicinity of overhead lines or directly on the nn line at a great distance from the place of installation of the limiters. In addition, these types of limiters provide protection against switching surges. 1and2 surge protectors are installed in front of the meter, thus protecting the measuring system Technical data: Protection class: BandC (IandII), Number of fields: 4, Test current In: 30kA, Current MAX Imax: 60kA, Iimp: 6kA, Uc: 385V, Up: andlt; 1.5kV, Operating temperature: -40°C - and80°C, Response time: andlt; 25 ns, Operating humidity: 30% - 90%, Conditions of installation and operation: Relative humidity of air does not exceed 95%, The slope of the vertical plane of the limiter shall not be greater than 5°. Do not mount the device in a place prone to shocks and vibrations. We advise you to periodically check the limiters – every two years of their use or after each direct atmospheric discharge. Surge arresters use a connection of copper conductors 6,0-25mm 2; Installation on the TH35 rail. Connection and installation of OPX-4P-B surge protector