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
