Rated current from 200A 400A 630A 800A 1000A 1250A 1600A 2000A 2500A 3200A to 4000A 5000A 6300 Amperes; Rated operational voltage (Ue) include 220/230/240VAC 380/400/415VAC 440/480VAC 660/690VAC 800VAC 1000/1140VAC; Rated limit short-circuit breaking capacity Icu (AC415V) from 50kA to 135kA; Installation type include fixed type and draw out type.
Description
Description of NDW3 Series
The NDM3 series of molded case circuit breakers (hereinafter referred to as MCCBs) apply to infrequent switching of circuits with the AC 50/60Hz, the rated working voltage of AC690V and rated working current of 1250A as well as infrequent motor starting. Meanwhile, the circuit breaker features the overload alarm non-tripping function. In case of the line overload, the circuit breaker with the function will not be tripped, but only output the overload signal to ensure the power supply continuity. Products can be used for a duration of 8 hours at 1.3 times of the rated current with the performance remaining the same after cooling. The circuit breaker can substitute the thermal relay alarm solutions; with the overload, short circuit and undervoltage protection functions, the circuit breaker can protect lines and power equipment from damage.
Features
Features of NDW3 Series
- Four types: C type (basic), L type (standard), M type (higher breaking) and H type (high breaking type) by the rated limit short-circuit breaking capability.
- Smaller size, higher breaking capability.
- Efficient short arcing, vibration resistance.
- Boxed accessories may be used for rapid installation of circuit breaker, and timely respond to the user requirements without any adjustments.
Technology data
Technology data of NDW3 Series
NDW3-1600 series
| Number of poles | 3, 4 | |
| Rated current In 40℃ | 200A, 400A, 630A, 800A, 1000A, 1250A, 1600A | |
| North pole rated current | 100%In | |
| Rated operational voltage Ue | AC220V/230V/240V, AC380V/400V/415V, AC440V/480V, AC660V/690V | |
| Rated limit short-circuit breaking capacity Icu (AC415V) | 66kA | |
| Rated operating short-circuit breaking capacity Ics (AC415V) | 55kA | |
| Rated short-time withstand current Icw (AC415V) 1s | 50kA | |
| Controller | KM controller | ● |
| KY controller | ● | |
| Installation type | Fixed type | ● |
| Drawout type | ● | |
| Special application | Wind power, plateau type circuit breaker | ● |
| Thermal-humidity type circuit breaker | ● | |
NDW3-2500 series
| Number of poles | 3, 4 | |
| Rated current In 40℃ | 630A, 800A, 1000A, 1250A, 1600A, 2000A, 2500A | |
| North pole rated current | 100%In | |
| Rated operational voltage Ue | AC220V/230V/240V, AC380V/400V/415V, AC440V/480V, AC660V/690V,AC800V/1000V/1140V | |
| Rated limit short-circuit breaking capacity Icu (AC415V) |
S: 66kA H: 85kA |
|
| Rated operating short-circuit breaking capacity Ics (AC415V) | 100% Icu | |
| Rated short-time withstand current Icw (AC415V) 1s | 100% Icu | |
| Controller | KM controller | ● |
| KY controller | ● | |
| Installation type | Fixed type | ● |
| Drawout type | ● | |
| Special application | Wind power, plateau type circuit breaker | ● |
| Thermal-humidity type circuit breaker | ● | |
NDW3-4000 series
| Rated current InA | 800, 1000, 1250, 1600, 2000, 2500, 2900, 3200, 4000 | ||
| Rated current of Pole N | 100%In | ||
| Rated working voltage Ue | AC220V/230V, AC380V/400V, AC415V, AC660V/690V, AC1000V | ||
| Rated insulating voltage Ui | 1000V | ||
| Rated impact withstanding voltage Uipm | 12kV | ||
| Number of poles | 3, 4 | ||
| Fully broken time (≤690V) | ≤30ms | ||
| Closing time | ≤70ms | ||
| Short circuit breaking capacity class | S | H | |
| Rated ultimate short circuit breaking capacity Icu (effective value) | AC400V | 85kA | 100kA |
| AC690V | 75kA | 85kA | |
| AC1000V | 50kA | -- | |
| Rated operative short circuit breaking capacity Ics (effective value) | AC400V | 85kA | 100kA |
| AC690V | 75kA | 85kA | |
| AC1000V | 50kA | -- | |
| Rated short circuit connecting capacity Icm (peak value) | AC400V | 187kA | 220kA |
| AC690V | 165kA | 187kA | |
| AC1000V | 110kA | -- | |
| Rated short time withstanding current Icw (effective value) 1s | AC400V | 85kA | 100kA |
| AC690V | 75kA | 85kA | |
| AC1000V | 50kA | -- | |
| Operating performance (Times)Electrical service life | AC400V | 8000 | 5000 |
| AC690V | 6000 | 3000 | |
| AC1000V | 1000 | 500 | |
| Installation type | Fixed | ● | |
| Drawer | ● | ||
| Main circuit wiring type | Fixed | Horizontal, vertical, prolonged horizontal, prolonged vertical | |
| Drawer | Horizontal, vertical, prolonged horizontal, prolonged vertical | ||
| External dimensions: W×D×H (mm) | Fixed 3P | 428×300×392 | |
| Fixed 4P | 543×300×392 | ||
| Drawer 3P | 435×432×401 | ||
| Drawer 4P | 550×432×401 | ||
