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Güde Clamps for 40220 32mm

Güde Clamps for 40220 32mm

€7.52 +VAT
HUF 2,984.25
  • Weight: 1 kg
  • EAN: 4015671402554
  • Manufacturer: GÜDE
  • Manufacturer Code:
Supplier:
VS
VSWEB Kft
verified supplier
Response time: usually up to 2 days
Güde Clamps for 40220 13mm

Güde Clamps for 40220 13mm

€4.55 +VAT
HUF 1,803.15
  • Weight: 0.6 kg
  • EAN: 4015671402530
  • Manufacturer: GÜDE
  • Manufacturer Code:
Supplier:
VS
VSWEB Kft
verified supplier
Response time: usually up to 2 days
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Clamps

Electrical terminals are a very wide group of elements used in electrical installations. They are independent accessories used in switching technology, they can also be part of apparatuses and fittings, which are used to connect different sections of the installation with each other. Terminals are used not only in power circuits, but also in control and data communication circuits.

Clamps - function, application and construction

The purpose of terminals is to create a stable and permanent connection between a conductor and an apparatus, fixture or connector. Terminals are divided into screw and spring clamp types. In the former, the clamp is made by tightening a screw to the wire based on the contact, while in spring terminals the function of the screw is taken over by a spring. Spring clamps can be divided into two groups:

  • with retractable spring - the connection is formed by lowering the lever, thus pressing the wire against the contact through the spring, which constitutes the second contact,

  • push-in type - connection is permanent and inserting the cable end is equivalent to placing it between the clamps.

Screw terminals

Screw terminals are the oldest and most common form of connection for maintaining the conduction of electrical energy or signals. They are made from conductors (metals) and there is little variation in their construction. An electrical connection is established by inserting a stripped wire end into the connector and clamping it with a screwdriver.

Screw-type electrical terminals are elements of fittings (thanks to them it is possible to connect, for example, a socket to the existing circuit), apparatuses in switchgears and control cabinets and telecommunication, as well as they are independent connecting accessories serving as installation cubes or 12-track terminal blocks.

snap terminals

Although screw terminals do their job well, their installation requires a certain time commitment. Of course, on the scale of five or ten connections, a dozen or so seconds spent on their completion is not much, but e.g. when mounting a large number of wires in electrical switchgear assemblies, this time becomes significant.

70 years ago the owners of the then German garage company Wago noticed this inconvenience, creating snap-on connectors. How does a snap-in terminal differ from a screw connector? Its electrical conductivity is, of course, also based on properly selected materials (metals), while the latch is based on a flat spring mechanism. Opening the lever allows to insert the cable end into the opening of the latch, and lowering it, i.e. releasing the spring, results in clamping the cable in the opening. The resulting connection allows current to flow and also holds the wire in place.

Although snap-action terminals are extremely popular today, both in their installation form and as electrical terminal blocks in the form of strip connectors used in switchgears or control cabinets or racks, at first they were not very popular among fitters. Only with time, they began to be appreciated as a quick and tool-free way to create conductive connections.

Push-in terminals

Another type of terminal that requires even less time to create an electrical connection is the push-in terminal. These are also based on a spring, which presses the connectors together in the idle state. The stripped wire end is inserted between the connectors and is held in place by the spring while current flows through it.

Just like snap and screw connectors, push-in connectors are used in many electrical engineering applications as well as signal transmission.

Electrical terminal systems

The role of electrical terminal systems, represented by terminal blocks, is to reduce and organize wiring in electrical, ICT and control cabinets. Slatted connectors are produced both with built-in screw and snap-on terminals, as well as push-in type. The products available on the market have different sizes, designs and applications, however, their common feature is the function, i.e. creating electrical connections, and the presence of connectors as the basic connecting elements.