Function and use
CHINT Xinrui NM5 series plastic case circuit breakers are suitable for AC 50/60Hz, rated voltage AC690V and below, and rated current 16A to 1000A circuits. As a device for making, breaking and carrying rated current, it can reliably protect lines and electrical equipment when they are overloaded, short-circuited or under-voltage. It can also be used as an infrequent starting and overload, short-circuit and under-voltage protection for motors. The product is safe, reliable, flexible and easy to use, and intelligent IoT, and can be widely used in power distribution application scenarios in various industries such as construction, new energy, electric power, infrastructure, etc.
Detailed description
Advantages/core functions:
01 Excellent performance
Insulation voltage up to AC1000V, more reliable operation in high-altitude environments
Ics=100% lcu, stronger breaking capacity, ensuring the reliability of circuit breaker breaking and the stability of user's power consumption
02 Flexible and easy to use
Full series of products can realize free top/bottom entry
Industry-leading miniaturized design of accessories, 4 types of accessories can be installed at the same time, meeting a variety of extended function requirements
03 Smart Internet of Things
It is equipped with current unbalance measurement, tripping record/fault information display, etc. to meet customers' needs for digital and intelligent system construction
Detailed parameters
| Parameter classification | Parameter items | Parameter value |
|---|
| Product model | NM5S-125 | 32, 63, 100, 125 |
| NM5S-250 | 160, 200, 225, 250 |
| NM5S-400 | 250, 300, 315, 400 |
| | NM5S-630 | 400, 500, 630 |
| NM5S-800 (W630) | 800, 400, 500, 630, 700, 800 W630, 400, 500, 630 |
| NM5S-1000 | 630, 800, 1000 |
| Rated operating current In(A), 40℃ | | |
| Electrical performance | Rated insulation voltage Ui(V) | 1000 |
| Rated impulse withstand voltage Uimp(kV) | 8 |
| Rated operating voltage Ue(V),AC 50/60Hz | 380/400/415/660/690 |
| Number of poles | 3P |
| | 4P |
| Breaking capacity | Rated limit short circuit breaking capacity Icu(kA) | AC380/400/415V: 36, 50, 70; AC660/690V: 8, 10, 10 |
| Rated operating short-circuit breaking capacity Ics(kA) | AC380/400/415V: 36, 50, 50; AC660/690V: 4, 5, 5 |
| Rated short-time withstand current Icw(A),1s | AC380V/400V/415V: 4, 5, 5; 6, 10, 15; 8, 13, 15; 800/10, 630/8, 12 |
| Comply with standards | | IEC/EN 60947-2, GB/T 14048.2 |
| Use category | | A, B |
| Working environment temperature (℃) | | -35~+70 |
| Isolation function | | Free entry of upper/lower wires |
| Wiring method | | Upper / Lower free entry |
| Flashover distance (mm) | | ≤50/zero flashover (need to install short terminal TCY) |
| Mechanical life (times) | No maintenance | 20000, 20000, 10000, 10000, 10000, 5000 |
| With maintenance | 40000, 40000, 20000, 20000, 20000, 10000 |
| Electrical life (times) | AC380/400/415V/In | 10000, 10000, 8000, 8000, 2500 |
| | 800/5000 W630/8000 |
| Protection type | | Distribution protection, motor protection |
| Installation and connection | Fixed | Front plate connection, Rear connection |
| Plug-in | Front connection, rear connection |
| Without base | Front connection, rear connection |
| Outline dimensions | Outline dimensions (mm) Width (W) × Height (H) × Depth (D) 3P | 92×155×75.5, 92×155×91, 107×165×101.5, 140×257×111, 140×257×111, 182×270×115, 210×280×118, 210×280×118 |
| 4P | 122×155×75.5, 122×155×91, 142×165×101.5, 184×257×111, 184×257×111, 240×270×115, 280×280×118, 280×280×118 |
