NDM3A Series Molded Case Circuit Breaker
Updated：July 17,2026 10:55AM
NDM3A Series of Molded Case Circuit Breaker will be suitable for in-frequency switching of circuits and starting of motors in 50Hz/60Hzcircuit.Therated working voltage is up to AC 1000V.The breaker has functions of overload protectionshort circuit protection and undervoltage protection which can protect circuit and electrical power unit properly.
2021 Quick Selection Guide »
Features of NDM3A Series
- The circuit breaker is currently available in the M type (high breaking capacity) version, classified according to its rated ultimate short-circuit breaking capacity.It features a wide operating temperature range and current-limiting capability, providing effective protection for both the circuit breaker and connected equipment under fault conditions while meeting the requirements of high-voltage applications. The product is characterized by its compact size, high breaking capacity, short arc distance, and excellent vibration resistance.
Technology data of NDM3A Series
| Type | NDM3A-250 | NDM3A-400 | NDM3A-630 | ||
| Number of poles | 3 | ||||
| Frame Rating In(A) | 63、80、100、125、140、160、180、200、225、250 | 225、250、315、350、400 | 400、500、630 | ||
| Rated insulation voltage(V) | 1140 | ||||
| Breaking capacity level | H | M | M | M | |
| Rated voltage Ue(V) | AC800 | AC550 AC600 AC690 AC800 AC1000 | |||
| Rated ultimate breaking capacity Icu(kA) | AC550V |
50 |
50 |
50 |
|
| AC600V |
42 |
42 |
42 |
||
| AC690V | 35 | 35 | 35 | ||
| AC800V |
36.5 |
30 |
30 |
30 |
|
| AC1000V | 12 | 12 | 12 | ||
| Rated operating short circuit breaking capacity Ics(kA) | AC550V | 50 | 50 | 50 | |
| AC600V | 42 | 42 | 42 | ||
| AC690V | 35 | 35 | 35 | ||
| AC800V | 30 | 23 | 23 | 23 | |
| AC1000V | 12 | 12 | 12 | ||
Datasheet of NDM3A Series
NDM3A-Series-MCCB-Datasheet.pdfINQUIRY NOW
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Factory Address：Pudong, Shanghai, China / Jiaxing, Zhejiang, China
Technical Support：+86-400-99-02706 Email：rfq@nader-circuit-breaker.com   |