Contact inserts for industrial connectors
Contact inserts of industrial connectors are their essential
elements responsible for the electrical connection. In connector
systems, they are interchangeable so that within one housing (plugs and
sockets) you can easily create various types of connections. In this
way, both the plugs and the housings can be used many times, depending
on the intended use and working conditions.
Contact inserts - the basic element of industrial connectors
Wherever the connection between the receiver and the power source should
be easily established, retained and disconnected, industrial connectors
are used. They represent a wide range of products used for the
implementation of electrical connections, both signal and power. The
large variety of connectors translates directly into the variety of
compatible contact inserts.
The role of contact inserts in industrial connectors
Measuring junctions with contact inserts are technically advanced
electromechanical elements. They can transmit both power supply and
low-current signals, or both components simultaneously. The most common
areas of use for industrial connectors are:
- mechanical engineering industry,
- automotive industry,
- agricultural industry,
- chemical industry
- aviation industry
- space exploration areas.
Connectors are used in particular in places where cables supply power or
control from the outside to the inside of the device, and output
measurement signals from it.
Due to the fact that the connectors are most often located outside the
device, they are exposed to connection in harsh environmental
conditions. For this reason, they must have appropriate tightness,
mechanical durability and chemical resistance, as well as good quality
contact inserts, which are responsible in the joint for creating and
maintaining the electrical connection.
Construction of a connector on the example of a rectangular connector
The wide range of industrial connectors includes circular and
rectangular industrial connectors. Taking into account the functional
elements, it can be assumed that the circular connector is constructed
in the same way as the rectangular connector. The example Revos
coupling from Wieland Elecric is representative of the entire group of
classic rectangular industrial couplings. Its components are:
- cable gland to ensure a seal between the cable and the electrical
connection inside the housing,
- plug housing (connector outer housing, cable entry point),
- connector inserts with contacts:
- male insert and male contacts,
- female insert and female contacts,
- socket housing.
Both male and female inserts use different types of terminals: screw,
solder, self-locking, crimp contacts , cast or stamped. In turn, the
socket housing can be provided with various types of connections - open
section mounted to the machine and closed section mounted to the machine
with side or bottom entry.
The process of composing a connector from system components
Both circular and rectangular connectors are similarly composed of the
same components mentioned above. The process should start with the
selection of the appropriate cartridge, specifying its parameters:
- type of contacts (in the case of multi-pin inserts, male contact
is a pin, and female contact - a socket) and their number,
- type of conductor attachment.
When the insert is already selected, you should choose the appropriate
plug and socket, which must be compatible with the insert, but also
suitable for a given application (eg size match the device housing). The
next step is to make electrical connections in the plug and socket. The
connector prepared in this way is ready for testing, and then, if the
test is successful, for use.