JSZD-1 series of DC voltage relays are specially designed for DC systems. They are over-voltage and under-voltage relays with good interchangeability, beautiful appearance, stable performance and reliable quality.
The JSZD-1 series DC voltage relay is designed for DC systems and combines an integrated circuit core with factory‑developed modules and peripheral components. It functions both as an over/under‑voltage relay and a precise digital voltmeter, allowing direct display of measured and set values.
The manual explains how to configure over‑voltage and under‑voltage thresholds, describes wiring connections, and lists precautions such as correct polarity and contact behavior. Installation diagrams for the three mounting types (JSZD-1A, JSZD-1B, JSZD-10) are included. This manual is written in Chinese.
| Rated DC Voltage | 48V, 110V, 220V |
|---|---|
| Over‑voltage release factor | 98‑99% |
| Under‑voltage release factor | 101‑102% |
| Output contact capacity | AC 220V 5A (10A) resistive |
| Adjustment range | Any value within allowed operating voltage |
Press the [Select] key to light the over‑voltage setting indicator, then adjust the potentiometer until the desired value appears on the display; the setting is then complete.
The over‑voltage contact is normally open and closes when over‑voltage occurs; the under‑voltage contact is normally closed and opens under normal voltage, closing only on under‑voltage or power loss.
The relay will not operate, but it will not be damaged thanks to built‑in protection components.