MTL7700 range MTL7799 DIN-rail mounting safety barriers

MTL7700 range MTL7799 DIN-rail mounting safety barriers

MTL7799 dummy barrier is used primarily for securing and earthing unused cables and screen connections

Model: MTL7799

Categories: MTL7700 range

SPARE CABLE CORES AND SCREENS

The MTL7799 dummy barrier is used primarily for securing and earthing unused cables and screen connections. Hazardous area terminals 3 and 4 are internally connected to the DIN-rail mounting/ earth connection. It also provides a power bus connection for direct connection of power for modules such as the MTL7743 and MTL7744 where no power supply screw terminal is provided.

Since its introduction in 1984 the MTL700 range has established itself as the worldwide standard for safety barriers. Known for its quality

and reliability, the MTL700 range is widely used in applications all over the world.

The MTL7700 range follows closely in the footsteps of the MTL700, but as a DIN rail mounting barrier, providing quick and easy installation without the need for special hardware.

Removable terminals are used for ease of installation, maintenance and for providing a loop disconnect by simply unplugging the terminals from the side of the module. Wire entry is also angled to assist wiring within limited space enclosures.

MTL7700 barriers clamp simply and securely onto standard T-section DIN rail, simultaneously making a reliable IS earth connection.

SPARE CABLE CORES AND SCREENS

The MTL7799 dummy barrier is used primarily for securing and

earthing unused cables and screen connections. Hazardous area

terminals 3 and 4 are internally connected to the DIN-rail mounting/

earth connection. It also provides a power bus connection for direct

connection of power for modules such as the MTL7743 and MTL7744

where no power supply screw terminal is provided.

POWER BUS APPLICATIONS

The PB7700 power bus is invaluable for saving installation time andwiring when connecting a 24V dc power source to a number of barriers.Typical applications include hazardous-area switches, 4/20mAtransmitters and proximitydetectors.The diagraillustrates the configuration for 4 barriers but up to 40 barriers can be served by this method.

The MTL7798 power feed module would normally be used with standard barriers such as MTL7787+ and MTL7787P+ because thecurrent/voltage trip protection mechanism of the MTL7798 protectsthe fuses in the barriers.

The MTL7799 dummy barrier can be used instead of the MTL7798 for direct ‘feed-through’ connection of a 24V dc supply onto the powerbus. Looping the power feed to each end of the bussed power allows the removal of individual barriers without loss of power to others inthe chain.