The spring terminal blocks were designed mainly for jointing control circuit wires in 0,2 mm ² - 6,0 mm ² cross-section range in good quality, quick and reliable way. The terminal block can accommodate unprepared rigid wires, or twisted or flexible wires equipped with cord-end terminals or male lugs. The highly heat resistant, strong, self-extinguishing (according to UL94-V0) polyamide plastic house with good electrical parameters – witch contains the electrical elements - , is shaped in a way to permit the terminal block to be fixed onto mounting rails according standard EN 50022 („hat” or „C” rail).

They are most useful when wires with different construction, type and crosssection on the same circuit shall be jointed. They are available in neutral conductor version (blue), too.