NDMNZ-320V Series Molded Case Circuit Breaker
Updated：July 17,2026 17:44PM
NDMNZ-320V molded case circuit breaker(hereinafter referred to as circuit breaker) is suitable for working voltage below DC1500V and rated working currentin DC systems up to 320A. The circuit breaker has the function of overload and short circuit protection which can protect the line and power supply equipment from damage caused by overcurrent. It can be used in power generationpower transmission and transformation photovoltaic new energy communication and other fields.
2021 Quick Selection Guide »
Features of NDMNZ-320V Series
- Supports DC1500V applications with reliable overload and short-circuit protection.
- Provides strong fault interruption capability up to DC1500V 20kA.
- Suitable for photovoltaic, power generation and other DC power systems.
Technology data of NDMNZ-320V Series
| Model | NDMNZ-320V | ||
| Rated current of frame Inm (A) | 320 | ||
| Rated current In (A) | 63、125、160、200、250、320 | ||
| Rated insulation voltage Ui (DCV) | 1600 | ||
| Rated impulse withstand voltage Uimp (kV) | 12 | ||
| Rated working voltage Ue (DCV) | 1000/1500 | ||
| Power frequency withstand voltage U (1min)(V) | 3820 | ||
| Utilization category | A | ||
| Number of poles | 2 | ||
|
Rated limit short-circuit breaking capacity Icu (kA) |
DC1500V | 20kA(T=2ms) | |
| DC1000V | 40kA(T=2ms) | ||
|
Rated operating short-circuit breaking capacity Ics(kA) |
DC1500V | 20kA(T=2ms) | |
| DC1000V | 40kA(T=2ms) | ||
| Life(times) |
Electrical life (DC1500V) |
1000 | |
|
Mechanical life (maintenance-free) |
10000 | ||
|
Boundary dimension |
 |
L(mm) | 200 |
| W(mm) | 84 | ||
| H(mm) | 108 | ||
| Flashover distance(mm) |
0 (With terminal cover) 100(Without terminal cover) |
||
| Cabling type | front-plate connection | ||
| Maintenance-free definition:The ability of a product or component to function properly without manual maintenance or intervention during its expected life under normal conditions of use. | |||
INQUIRY NOW
RELATED PRODUCTS
Factory Address：Pudong, Shanghai, China / Jiaxing, Zhejiang, China
Technical Support：+86-400-99-02706 Email：rfq@nader-circuit-breaker.com   |