Switches The normal choice is the MTL7787+/7787P+ with a regulated supply. The MTL774X modules are recommended for applications where an unregulated supply of up to 30V for relay output modules, or 35V for solid state output modules, is used.

　　The MTL7789+ offers a dual channel passive barrier for switch inputs where the input current for each channel is <10mA.

　　Switches / Proximity detectors

　　Eaton's MTL range of new switch/prox input barriers provide the user with a choice of relay and solid state outputs in single and dual channel versions.

　　The MTL7741 is single channel with a changeover relay output.

　　The MTL7743 and MTL7744 are dual channel versions affording very high packing densities. Power must be provided to these modules using the power bus facility.

　　The MTL7745 is a single channel proximity input (or switch input if ‘end of lines’ resistors are fitted) with relay contacts providing switch and line fault status. The LFD relay contacts close when a fault is detected. The MTL7742 has a single channel solid state switch that can be configured to switch from a power rail or down to ground. This is also ideal for high switching frequency applications.