In order to optimize the connection of electrical connections practically, ILME developed the plug connector series of CSH - squich -, which distinguishes itself by simplest assembly at the work bench just like in the field.The series of CSH (with cage tension spring connection and bolting device elements) represents thus the consistent advancement of the series of CSE (with conventional cage tension spring connection) and offers the following advantages. Simple connection without tool, clear saving of time in relation to conventional screwing or cage tension spring employments, fast optical distinction of the contact contacts of the leaders not attached yet, connection from leaders to 2.5 mm² with or without vein end sleeve , high vibration resistance, already wired. Each contact chamber is assigned a bolting device element. If this bolting device key is pressed, then the appropriate cage tension spring clamp is closed and a reliable connection of the leader is manufactured. The bolting device elements stand out coloured against the molding and are not not pressed down in the case of supply. After operation of the bolting device this is integrated complete - and vibration - into the corpus of the contact insert. The plug connector series of CSH - squich - offers thus a simple, fast and technically high-quality connection. In case of the necessity to loosen a leader again the bolting device elements can be opened with the help of a usual screwdriver (0.5 x 3.5 mm) completely simply again. The screwdriver is introduced for this to the opening of the bolting device key and pressed easily downward - already the key and the cage tension spring clamp lift themselves are opened. The contact inserts CSH are suitable for ranges of application from -40 °C to +125 °C and in the following sizes available: