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Strain relief and Terminal Block Cover
In certain jurisdictions, terminal block covers are required to meet local safety regulations. Strain reliefs and terminal block covers are available for con-
trollers housed in large enclosures and are used to relieve tension on the wiring and conceal the controllers’ wire terminals. Strain reliefs and terminal
block covers are optional and are sold as peripherals.
Prior to connecting all wires, it is recommended to install the strain relief. Three screws are provided for its installation under the bottom part of the enclo-
sure. Tie wraps can then be used to group wires together and attach them securely to the strain relief in an effort to relieve undue tension. If necessary,
the terminal block cover can then be clipped on to the strain relief as shown below.
Figure12: Large enclosure strain relief and terminal block cover installation
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