The MTT MS3737LC is a plug-in distributor that powers a 2-wire loop transmitter and splits its 4-20mA signal into a voltage output and a current output, in the same non-isolated input/output design as the standard MS3737. Keeping input and output on a common path lets the unit stay compact and cost-effective, suiting installations where a full three-way isolated distributor is more than the application needs, while input, output, and power still stay isolated from each other to keep the loop clean from supply-side noise.
The MS3737LC is offered with AC or high-voltage DC power options to suit the panel it is going into. Like the rest of the plug-in transmitter series, it clips into its own socket base for fast swap-out during calibration or maintenance without disturbing the field wiring, and wall or DIN rail mounting make it easy to fit into an existing panel.
| Input | 4-20mA DC from a 2-wire transmitter |
| Input Resistance | 250Ω |
| Transmitter Power Supply | 25V typical at 0% input; 18V typical at 100% input |
| Output 1 | 1-5V DC, 250kΩ min. load |
| Output 2 | 4-20mA DC, 10Ω max. load |
| Isolation | Input/output 1/output 2 as a group isolated from power (input and output not isolated from each other) |
| Accuracy | Better than ±0.1% |
| Temperature Effect | Better than ±0.03% per 10°C change |
| Power Supply | 100-240V AC (50-60Hz) or 100-240V DC |
| Power Consumption | 3.5VA max. (AC), 4.8W max. (DC) |
| Dimensions | W29 × H86 × D125mm |
| Weight | 110g max. (main unit), plus 80g max. socket |
| Mounting | Wall or DIN rail mounting |
| Terminals | M3.5 screw terminals |
| Operating Temperature | -5 to 55°C |
| Operating Humidity | 5 to 90% RH, non-condensing |
Frequently Asked Questions
What is the MTT MS3737LC used for?
It powers a 2-wire 4-20mA loop transmitter and splits its signal into a 1-5V voltage output and a 4-20mA current output, using the same non-isolated input/output design as the standard MS3737, so one transmitter can feed two receiving devices.
What’s the difference between the MS3737LC and the standard MS3737?
They share the same non-isolated distributor design and specifications. The MS3737LC is offered only in AC or high-voltage DC powered versions, while the standard MS3737 also offers a 24V DC powered version. If you’re running on 24V DC power, the standard MS3737 is what you need.
Does the MS3737LC isolate input from output?
No — like the MS3737, the input and outputs share a common circuit path rather than being fully isolated from each other, though all of them stay isolated from the power supply and ground.
What power supply options are available for the MS3737LC?
It’s available in 100-240V AC or 100-240V DC powered versions. Tell us your available supply and we can confirm the right version.
How do I know if the MS3737LC is right for my application?
Send us your transmitter’s signal type, your available power supply, and the two output signals your receiving equipment needs, and we can confirm before you order.
Download MTT MS3737LC Slim Plug-In Distributor (Non-Isolation between Input and Output) information here
Spec Sheet: SpecSheet1_MS3737LC_Rev230_E.pdf
Manual: Manual1_MS3737LC_Rev140_E.pdf
