MTT MS3707 Slim Plug-In Distributor (with Isolation)

The MTT MS3707 is a slim plug-in distributor that both powers a 2-wire, 4-20mA field transmitter and takes its current signal, reproducing it as one or two galvanically isolated outputs for downstream equipment. By supplying the loop power itself, it removes the need for a separate transmitter power supply and keeps the receiving instruments electrically isolated from the field loop.

Where a dual-output configuration is used, both outputs stay isolated from each other, the input, and the power supply, letting one 2-wire transmitter feed a control loop and an independent monitoring or logging system at the same time. Front-accessible zero and span trimmers make on-site calibration quick, and like the rest of the plug-in transmitter range, the MS3707 clips into its own socket base so the unit can be swapped for calibration or replacement in seconds without disturbing the field wiring. Flexible AC or DC power plus wall or DIN rail mounting make it easy to fit into an existing panel.

Input4-20mA DC from 2-wire transmitters
Input Resistance250Ω
Transmitter Power Supply26.4V typical at 0% input; 21.6V at 100% input
Output4-20mA DC or 0-20mA DC current; 0-10mV to 0-10V DC voltage ranges (single or isolated dual output)
Isolation4-way isolation between input, outputs, power, and ground
Insulation Resistance100MΩ minimum at 500V DC
Power Supply100-240V AC (6.5-7.5VA), 24V DC (2.1-2.4W), or 100-240V DC (7.2-8.4W)
AccuracyBetter than ±0.1% of span (at 25°C±5°C)
Response Time85ms maximum (0-90%)
CMRRMinimum 100dB
Zero & Span AdjustmentFront-accessible trimmers
Dimensions (W x H x D)29mm x 86mm x 125mm
WeightMain unit 120g; socket 80g
MountingWall or DIN rail mounting, plug-in socket base
TerminalsM3.5 screw terminals
Operating Temperature-5 to 55°C ambient

Download MTT MS3707 Slim Plug-In Distributor information here

Datasheet: MTT_SpecSheet_MS3707_Rev31_E

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