Load Break Switch


Load break switches, are mechanical switching devices used to close the load, carry current and break the current under specified normal circuit conditions or declared extreme conditions. In addition to these duties, they do not have abnormal circuit conditions (short circuit etc.) current characteristics within the specified limits for the declared period. In addition, they are manufactured in such a way that the isolation periods specified for the disconnector during deactivation are timed.

Fused types are integrated load break switches that fuse one or more poles in series.

The device is registered under normal network conditions such as overvoltage caused by reasons such as lightning striking the distribution systems with impulse withstand voltage (Uimp). This definition also indicates the dielectric quality of the device. Choosing a device according to the Uimp values ​​guarantees overvoltage protection. These values ​​are declared in the relevant technical catalogues for all Katko load break switches. For almost all Katko load break switches, this value is 8 kV, which corresponds to the 4th category recorded for the main break switches in the region. In this respect, it can be used in categories 1, 2, 3 and 4 among Katko load break switches.

The normal operating temperature for Katko switches is between -40 and +80°C. However, as with all industrial products, there will be a decrease (lower) in the maximum load values ​​above +40°C.

Katko switches are designed according to the international listing scheme:
- Products are tested according to IEC 60947 (IEC 60947 -AC 23 / 690V values ​​are declared)
- 50 kA R.M.S values ​​are declared
- CB certificates are available
- UL, CUL products are available (UL 60947-4-1A)
- Fuse protectors comply with IEC 60269 / UL 4248-1


Enclosed Safety Switch More Information
Load Break Switch for Panel More Information