NDW2F Series Air Circuit Breaker
Updated：July 17,2026 17:33PM
The NDW2F air circuit breaker is suitable for AC 50Hz/60Hz power generation systems with rated currents from 400A to 4000A and rated operational voltages of AC220V/230V/240V AC380V/400V/415V AC440V/480V and AC660V/690V.The NDW2F-4000 can also be used in power generation systems with a rated operational voltage of AC1000V.
2021 Quick Selection Guide »
Features of NDW2F Series
- Meet the requirements of various power generation systems, with a particular focus on the operating characteristics of wind power generation.
- It features excellent EMC performance and is designed to operate reliably in harsh environments, including high temperature, low temperature, humid heat, salt spray, vibration, and high-altitude conditions.
Technology data of NDW2F Series
| Circuit Breaker | NDW2F-2000 | NDW2F-3200 | NDW2F-4000 | |
| Frame size rated current Inm (A) | 2000 | 3200 | 4000 | |
| Rated current In (A) at +40°C | 400、630、800、1000、1250、1600、2000 | 1600、2000、2500、2900、3200 | 1600、2000、2500、3200、4000 | |
| Number of poles | 3、4 | 3、4 | 3、4 | |
| Rated current of N pole | 100%ln | 100%ln | 100%ln | |
| Rated insulation voltage Ui | AC1000V | AC1000V | AC1000V | |
|
Rated ultimate short-circuit breaking capacity Icu (r.m.s.) |
AC415V) | 80kA | 100kA | 100kA |
| AC690V | 65kA | 80kA | 75kA | |
| AC1000V | / | / | 50kA | |
|
Rated service short-circuit breaking capacity Ics (r.m.s.) |
AC415V1) | 80kA | 85kA | 100kA |
| AC690V | 65kA | 65kA | 75kA | |
| AC1000V | / | / | 50kA | |
|
Rated short-time withstand current Icw (r.m.s.) 1s |
AC415V¹) | 66kA | 85kA | 85kA |
| AC690V | 50kA | 55kA | 75kA | |
| AC1000V |
/ |
/ |
50kA | |
| Note：1)NDW2F-4000 is AC400V | ||||
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Factory Address：Pudong, Shanghai, China / Jiaxing, Zhejiang, China
Technical Support：+86-400-99-02706 Email：rfq@nader-circuit-breaker.com   |