The S9 Shunt Release Device is suitable for use with NB1 or NBH8 series circuit breakers, allowing for remote shunt release operation in AC 50Hz (or 60Hz) circuits with rated voltages up to 400V. The device has reliable operating characteristics and breaking capacity, with a mechanical lifespan of at least 0.4 million cycles.
This manual describes the S9 shunt‑trip (分励脱扣器) intended for use with NB1 or NBH8 series circuit breakers in AC 50 Hz/60 Hz systems up to 400 V. It outlines normal operating conditions, installation requirements, and the device’s functional principle.
Key specifications such as rated voltage, control voltage options, breaking capacity, mechanical life, and environmental limits are listed, along with physical dimensions and mounting guidelines. This manual is written in Chinese.
| Breaking capacity | AC 3 A/400 V, AC 6 A/230 V, AC 3 A/48 V, AC 6 A/24 V, AC 6 A/12 V |
|---|---|
| Mechanical life | ≥ 4 000 operations |
| Withstand voltage | 2000 V for 1 min |
| Operating temperature | -5 °C to +40 °C (average ≤ +35 °C) |
| Maximum altitude | 2000 m |
It operates from –5 °C to +40 °C, with an average not exceeding +35 °C.
The mechanical life is at least 4 000 operations.
It can withstand 2000 V for 1 minute.