STC 230: Snap-on module for standard earthed socket outlets
The well received two-pole STC surge arrester can be fitted inconspicuously on the rear side of standard earthed socket outlets. The STC surge protection module thus adapts to every type of socket outlet. The plastic snap-on retaining ring allows easy installation even in already mounted earthed socket outlets. In addition to a thermal disconnector, the protective device features an acoustic fault indication. As the surge protection module is installed in parallel to the socket outlet, the power supply of the connected loads remains uninterrupted, even if the surge arrester is overloaded.