MTT MS3907 Chassis-mounting Distributor

The MTT MS3907 Chassis-mounting Distributor powers a two-wire, loop-powered transmitter directly and converts its 4-20mA output into two mutually isolated DC output channels, letting a single field transmitter feed two separate destinations, such as a local indicator and a PLC input, without a separate power supply or splitter. Packaged in the same compact chassis-mount format as the rest of the MS39-series, it suits panels built around MTT’s high-density RC3900 chassis platform.

A front-accessible toggle switch lets technicians turn the transmitter power on or off directly at the module, with a green LED confirming when power is active, which simplifies loop troubleshooting and commissioning. Several dual-output combinations are available, mixing voltage and current outputs to match the receiving equipment, and four-way isolation between input, both outputs, and power keeps each distributed channel electrically independent. The multi-slot chassis design supports high-density mounting where many transmitter loops need to be powered and distributed in a compact space.

Input Signal4-20mA DC from two-wire transmitters
Input Resistance250Ω
Transmitter Power SupplyApprox. 25V unloaded; 18V at 20.48mA input
Max Transmitter Current25mA typical
Short-Circuit Protection26mA limit, continuous duration permitted
Output Combinations1-5V/1-5V DC, 0-5V/0-5V DC, 0-10V/0-10V DC, 1-5V/4-20mA DC, 4-20mA/4-20mA DC
Output Load2mA max (voltage); 300Ω (350Ω dual current) for current outputs
AdjustmentApprox. ±2% of span, zero and span
Isolation4-way isolation between input, Output 1, Output 2, and power; 100MΩ min. insulation resistance @500V DC; 1500V AC dielectric strength (input/outputs), 500V AC (outputs to power, 1 min, 0.5mA cutoff)
CMRR100dB min. (500V AC, 50/60Hz)
Power Supply24V DC ±10%, 80mA max; 160mA fuse (dual voltage/current output) or 300mA fuse (dual current output)
AccuracyBetter than ±0.1% of span (at 25°C±5°C); ±0.2% of span per 10°C temperature coefficient
Response Time85ms max (0-90%, step input at 100%)
DimensionsW19.5 x H53 x D82mm
Weight80g max
MountingChassis mount (RC3900A or RS3900-01TB)
Operating Conditions0-55°C, 5-90% RH non-condensing
Storage Temperature-10 to 60°C
Additional FeaturesFront-accessible transmitter power toggle switch; green LED power indicator; conformal coating (HumiSeal 1A27NSLU polyurethane); optional CE compliance

Download MTT MS3907 Chassis-mounting Distributor information here

Datasheet: MTT_SpecSheet1_MS3907_Rev220_E

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