DUC01 and PUC01 are TRMS AC/DC overvoltage/undervoltage monitoring relays, which can select measuring range, adjustable voltage, adjustable hysteresis, adjustable delay function, programmable latching or inhibit at set level
The DUCO1 and PUCO1 relays provide true RMS AC/DC over‑, under‑, over‑over and under‑under voltage monitoring with adjustable voltage, hysteresis and delay functions. They can be mounted on a DIN‑rail or used as plug‑in modules and feature LED indicators for power, alarm and relay status.
The document includes detailed wiring diagrams, DIP‑switch settings for range, level, hysteresis and delay, as well as environmental ratings, approvals (UL, CSA, CE) and mechanical/electrical life data. It also outlines supply requirements and contact ratings for various load types.
| Measuring range | 2 to 500 V AC/DC |
|---|---|
| Relay output | 1 or 2 x 8 A SPDT relays (ND or NE selectable) |
| Supply voltage options | 24 VDC, 48 VDC, 24/48 VAC, 115/230 VAC |
| Contact rating (AC) | 8 A @ 250 VAC |
| Mechanical life | > 30 × 10⁶ operations |
| Electrical life | > 2 × 10⁶ operations |
| Operating frequency | < 7200 operations/h |
| Dielectric strength | 2 kVAC (rms) |
| Accuracy | ±0.5 % on full‑scale |
| Temperature drift | +1000 ppm/°C |
The relays are approved by UL, CSA (except 748) and have CE marking.
DUCO1 includes two 8 A SPDT relays.
The voltage range can be set from 2 V to 500 V AC/DC using DIP switches.
Supported supply voltages are 24 VDC, 48 VDC, 24/48 VAC and 115/230 VAC.