The MTT MS3721 is a slim plug-in PT transmitter that reads the AC output of a potential transformer, calculates its true RMS value, and converts it into a standard DC signal for displays, controllers, and data acquisition systems. It gives a safe, low-level way to monitor higher system voltages, since the PT itself does the step-down and the MS3721 handles the conversion to a usable DC output without exposing downstream equipment to the actual line voltage.
Multiple input voltage ranges are available to match common PT secondaries, and current or voltage output options let it fit the receiving equipment, with a second isolated output for feeding an independent monitoring or alarm system at the same time. Like the rest of the plug-in transmitter series, the MS3721 clips into its own socket base for fast swap-out during calibration or maintenance without disturbing the field wiring, and flexible AC or DC power plus wall or DIN rail mounting make it easy to fit into an existing panel.
