The DIB71 is a precise TRMS AC/DC over current or under current (DIP switch selectable) monitoring relay. Direct measuring or through current transformer. Owing to the built-in latch function, the ON-position of the relay output can be maintained.
The DIB71 is a 1‑phase true RMS AC/DC monitoring relay that can detect over‑ or under‑current conditions. Measurement is performed through an internal shunt and the measuring range is selectable via DIP switches, covering 0.1 mA to 5 A for both AC and DC.
The relay offers a 5 A SPDT output, configurable latch or inhibit functions, adjustable hysteresis (0‑30 % of set value), and a programmable delay from 0.1 s to 30 s. It is housed in a 35.5 mm DIN‑rail module with LED indicators for power, alarm and relay status, and meets IEC safety and EMC standards.
| Measuring range | 0.1 mA to 5 A AC/DC |
|---|---|
| Output type | 5 A SPDT relay (N.D. or N.E. selectable) |
| Supply voltage | 24/48 VAC or 115/230 VAC |
| Rated insulation voltage | 250 VAC |
| Contact rating | 5 A @ 250 VAC (resistive), 2.5 A @ 24 VDC (inductive) |
| Adjustable delay | 0.1 s to 30 s |
| Hysteresis setting | 0 % to 30 % of set value |
| Mechanical life | 2 × 10⁵ operations |
The measuring range is selected by setting DIP switches 1 and 2 as shown in the wiring diagram.
The delay can be programmed from 0.1 seconds up to 30 seconds.
Yes, the relay has a programmable latching function that can hold the output in the ON position.
LEDs show power‑on status, alarm condition, and relay output status.