The MTL7700 Safety Barrier MTL7728+

The MTL7700 Safety Barrier MTL7728+MTL7728+/7787P+/7760AC

Features:

The MTL7700 Series 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 ontostandard T-section DIN rail, simultaneously making a reliable IS earth connection. For applications where field power is required for switch inputs or 2-wire transmitters, the MTL7700 Series provides a bussed power feed facility. When used in conjunction with the MTL7798 power feed module the user has a fully protected, electronically fused supply to many barriers with no additional wiring required.

The MTL7700 Safety Barrier MTL7728+MTL7728+/7787P+/7760AC

Product parameters:

Ambient temperature and humidity limits:

–20 to +60°C continuous working

–40 to +80°C storage

5–95% RH

Leakage current

For 'basic' barriers with a working voltage of 5V or more, the

leakage current decreases by at least one decade per volt

reduction in applied voltage below the working voltage, over two

decades. For the MTL7755ac/7756ac it decreases by at least one

decade for a 0.4V reduction in applied voltage.

Terminations

Removable terminals accommodate conductors up to 2.5mm2

(13AWG). Hazardous-area terminals are identified by blue labels.

Removal force >15N

colour coding of barrier label

Grey: non-polarised

Red: positive polarity (MTL7706 negative to transmitter )

Black: negative polarity

White: dummy barrier, MTL7799

Weight

140g approx

Mounting and earthing

By 35mm Top Hat DIN rail