DIB02 and PIB02 are precise TRMS AC/DC over or under current monitoring relays that can be used with external shunts or CTs. The product has six to 150 mV AC/DC and 0.4 to 4 Vp AC measuring ranges (MI or MP range), adjustable current relative scale, adjustable hysteresis relative scale, adjustable delay function (0.1 to 30 seconds), programmable latching or inhibit at set level, 8 A SPDT relay output (N.D. or N.E. selectable), DIN rail mounting in accordance with DIN/EN 50 022 (DIB02) or plug-in module (PIB02), a 22.5 mm Euronorm housing (DIB02) or 36 mm plug-in module (PIB02), and LED indication for relay, alarm and power supply ON. The product also has a galvanically separated power supply.
The DIBO2 (DIN‑rail) and PIBO2 (plug‑in) relays provide true RMS AC/DC over‑or‑under current monitoring with selectable measuring ranges via DIP switches. Current is measured through an external shunt or current transformer, supporting 1‑phase and 3‑phase currents up to 800 A when using appropriate CTs.
Both models offer an 8 A SPDT relay output, configurable latching or inhibit functions, adjustable hysteresis, and delay settings. They are supplied with a galvanically isolated power source and feature LED indicators for power, alarm, and relay status. The devices meet UL, CSA, and CE approvals and are rated for IP20 protection.
| Measuring range (low) | 6 mV to 60 mV AC/DC |
|---|---|
| Voltage range (high) | 0.4 V to 4 V AC |
| Output type | 8 A SPDT relay (N.D. or N.E. selectable) |
| Power supply options | 24 VDC, 48 VDC, 24/48 VAC, 115/230 VAC |
| Rated insulation voltage | 250 VAC |
| Mechanical life | >30 × 10⁶ operations |
| Electrical life | >10⁶ operations at 8 A, 250 V |
| Operating frequency | <7200 operations/h |
| Dielectric withstand | 2 kVAC rms, 4 kV (1.2/50 µs) |
| Environmental protection | IP20 |
| Operating temperature (DIN) | -20 °C to 60 °C, RH <95 % |
| Operating temperature (Plug‑in) | -30 °C to 80 °C, RH <95 % |
| Dimensions (DIN‑rail) | 22.5 × 80 × 99.56 mm |
| Dimensions (Plug‑in) | 36 × 80 × 94 mm |
| Weight | ≈150 g |
| Approvals | UL, CSA (except 748), CE |
The relay provides an 8 A SPDT (single‑pole double‑throw) output that can be configured as normally de‑energized (N.D.) or normally energized (N.E.).
The measuring range is selected by setting DIP switches 1 and 2 on the device.
The relays can be powered from 24 VDC, 48 VDC, 24/48 VAC, or 115/230 VAC, with a 20 % tolerance on DC supplies and 15 % on AC supplies.
When used with MI or MP current transformers, the relays can monitor up to 800 A AC current for 1‑phase and 3‑phase applications.