Datasheet PR515x512

Signal converters and isolating amplifiers

Issued 3 November 2026

Overcurrent monitor up to 30 A with relay, with OLED display

Article number PR515x512

PR515 module in DIN rail enclosure, angled top view: OLED display, push buttons, USB-C port and screw terminals

The PR515x512 measures the current through the module with a Hall sensor and compares it with a set limit. If the current stays above the limit for longer than the set delay, the relay switches; a short inrush current therefore does not cause an alarm. The hysteresis determines when the relay drops back. Limit, delay and hysteresis are set on the OLED display, which also shows the current value.

Price on request. Supplied in series, from 10 units per item. Not in stock? Then we build your series. One or a few units only as a trial, for a company with a series in sight.

Specifications

Supply12 and 24 V DC, operating range 11 to 30 V DC
InputDC or AC current through the module, measured with a Hall sensor
Measuring rangeVersions up to 5 A, 20 A or 30 A
OutputRelay contact (normally open)
IsolationMeasured current galvanically isolated from the electronics
SetupOLED display with UP, DOWN and OK buttons
Switching pointLimit, hysteresis and delay adjustable; monitoring on maximum or minimum
USBUSB-C for software updates and reading the status
Wi-FiBuilt-in hotspot for software updates
MountingDIN rail, horizontal enclosure
Internally fitted withPR181T27

Setup

  1. Connect the supply, the current cable and the relay contact according to the wiring diagram supplied with the module.
  2. On the display, set the limit in amperes and choose monitoring on maximum or minimum.
  3. Set the delay and the hysteresis and store with SAVE.