NDM5 Series Molded Case Circuit Breaker
Updated：August 12,2022 15:57PM
Nader NDM5 series MCCB is suitable for infrequent switching and infrequent starting of motors in circuits with AC 50Hz / 60Hz, rated AC working voltage of 230V to 1000V and rated working current of 125A to 1250A. The circuit breaker has overload, short circuit and undervoltage protection functions (with undervoltage release), which can protect the line and power supply equipment from damage. The product has the characteristics of small size, high breaking capacity, short arcing and anti vibration
2021 Quick Selection Guide »
Features
Features of NDM5 Series
- It is the smallest size of all series and can be installed with standard guide gauge.
- High breaking capacity, short flashover, vibration resistance and etc.
- The circuit breaker can adopt packaged accessories for quick installation, thus responding to the user's requirements, without adjustment.
Technology data
Technology data of NDM5 Series
NDM5-160 series
| Frame current Inm (A) | 160 | |||
| Rated current In (A) | 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160 | |||
| Rated voltage Ue (V) | AC230(2P, 3P, 4P), AC415(3P, 4P), AC690(3P, 4P) | |||
| Rated impulse withstand voltage Uimp | 8000V | |||
| Rated insulation voltage Ui | 800V | |||
| Power frequency withstand voltage (1min) | 3000V | |||
| Rated Ultimate/Service Short-circuit breaking capacity Icu/Ics (kA) | Code | L | M | H |
| AC230V(2P, 3P, 4P) | 100/100 | 120/120 | 150/150 | |
| AC415V(3P, 4P) | 70/70 | 100/100 | 150/150 | |
| AC690V(3P,N4P) | 8/8 | 12/12 | 15/15 | |
NDM5-250 series
| Frame current Inm | 250A | |||
| Rated current In | 63A, 80A, 100A, 125A, 160A, 200A, 250A | |||
| Rated voltage Ue (V) | AC230/AC240, AC400/AC415, AC690, AC800, AC1000 | |||
| Usage category | A | |||
| Rated impulse withstand voltage Uimp | 8000V | |||
| Rated insulation voltage Ui | 1000V | |||
| Power frequency withstand voltage (1min) | 3500V | |||
| Rated Ultimate/Service Short-circuit breaking capacity Icu/Ics (kA) | Code | L | M | H |
| AC230V/AC240V | 70/70 | 100/100 | 150/150 | |
| AC400V/AC415V (3P /4P) | 70/70 | 100/100 | 150/150 | |
| AC690V (3P /4P) | 10/10 | 15/15 | 25/25 | |
| AC800V (3P) | 20/15 | |||
| AC1000V (3P) | 15/10 | |||
NDM5-400 series
| Frame current Inm (A) | 400 | |||
| Rated current In (A) | 250, 320, 400 | |||
| Rated voltage Ue (V) | AC400/415, AC500V, AC690, AC1000V(3P) | |||
| Usage category | A | |||
| Rated impulse withstand voltage Uimp | 8000V | |||
| Rated insulation voltage Ui | 1000V | |||
| Power frequency withstand voltage (1min) | 4000V | |||
| Rated Ultimate/Service Short-circuit breaking capacity Icu/Ics (kA) | Code | L | M | H |
| AC400/415V | 70/70 | 100/100 | 150/150 | |
| AC500V | 50/50 | 70/70 | 85/85 | |
| AC690V | 20/20 | 30/30 | 40/40 | |
| AC1000V(3P) | -- | -- | 35/15 | |
NDM5-630 series
| Frame current Inm (A) | 630 | |||
| Rated current In (A) | 400, 500, 630 | |||
| Rated voltage Ue (V) | AC400/415, AC500V, AC690, AC1000V(3P) | |||
| Usage category | A | |||
| Rated impulse withstand voltage Uimp | 8000V | |||
| Rated insulation voltage Ui | 1000V | |||
| Power frequency withstand voltage (1min) | 4000V | |||
| Rated Ultimate/Service Short-circuit breaking capacity Icu/Ics (kA) | Code | L | M | H |
| AC400/415V | 70/70 | 100/100 | 150/150 | |
| AC500V | 50/50 | 70/70 | 85/85 | |
| AC690V | 20/20 | 30/30 | 40/40 | |
| AC1000V(3P) | -- | -- | 15/10 | |
NDM5-250V series
| Frame current Inm (A) | 250 | |||
| Rated current In (A) | 63, 80, 100, 125, 160, 200, 250 | |||
| Rated voltage Ue (V) | AC800, AC1000 | |||
| Usage category | A | |||
| Rated impulse withstand voltage Uimp | 8000V | |||
| Rated insulation voltage Ui | 1000V | |||
| Power frequency withstand voltage (1min) | 3500V | |||
| Rated frequency(Hz) | 50/60 | |||
| Rated Ultimate breaking capacity Icu (kA) | AC800V | 50 | ||
| AC1000 | 30 | |||
| Rated Service breaking capacity Ics (kA) | AC800V | 35 | ||
| AC1000 | 15 | |||
NDM5-400V series
| Frame current Inm (A) | 400 | |||
| Rated current In (A) | 250, 320, 400 | |||
| Rated voltage Ue (V) | AC800, AC1000 | |||
| Usage category | A | |||
| Rated impulse withstand voltage Uimp | 8000V | |||
| Rated insulation voltage Ui | 1000V | |||
| Power frequency withstand voltage (1min) | 4000V | |||
| Rated frequency(Hz) | 50/60 | |||
| Rated Ultimate breaking capacity Icu (kA) | AC800V | 50 | ||
| AC1000 | 35 | |||
| Rated Service breaking capacity Ics (kA) | AC800V | 50 | ||
| AC1000 | 18 | |||
NDM5-630V series
| Frame current Inm (A) | 630 | |||
| Rated current In (A) | 400, 500, 630 | |||
| Rated voltage Ue (V) | AC800, AC1000 | |||
| Usage category | A | |||
| Rated impulse withstand voltage Uimp | 8000V | |||
| Rated insulation voltage Ui | 1000V | |||
| Power frequency withstand voltage (1min) | 4000V | |||
| Rated frequency(Hz) | 50/60 | |||
| Rated Ultimate breaking capacity Icu (kA) | AC800V | 50 | ||
| AC1000 | 35 | |||
| Rated Service breaking capacity Ics (kA) | AC800V | 50 | ||
| AC1000 | 18 | |||
Datasheet of NDM5 Series
NDM5-Series-MCCB-Datasheet.pdf
FAQs
Questions & Answers for NDM5 Series
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What is a molded case circuit breaker?Moulded Case Circuit Breakers Explained. ... A moulded case circuit breaker (MCCB) is a type of electrical protection device that is used to protect the electrical circuit from excessive current, which can cause overload or short circuit.
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What is the difference between MCCB and MCB?MCB is miniature circuit breaker which is used to break small currents. Like in domestic LT circuits. The ratings usually end up to 100 A. MCCB is a Module case circuit breaker which has a rugged construction as it can break larger currents usually from (100-1000A).
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What is MCCB and its working?Molded Case Circuit Breaker (MCCB) is a circuit breaker and trip device assembled in a mould case. Also it can automatically cut off electric power in case of overload and short circuit. It is meant for higher rated current and is commonly used in Industrial applications.
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What causes MCCB to trip?Circuit overloading is known to be the most common reason for circuit breaker tripping. It simply means that we're running too many heavy power-consuming devices at the same time on the same circuit. The next most dangerous cause is a short circuit.
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How do molded case circuit breakers work?The traditional molded-case circuit breaker uses electromechanical (thermal magnetic) trip units that may be fixed or interchangeable. An MCCB provides protection by combining a temperature sensitive device with a current sensitive electromagnetic device. Both these devices act mechanically on the trip mechanism.
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Why we use Mccb instead of MCB?If evaluated from their power capacities, the MCB is essentially used for low-current requirements, such as, home wiring or small electronic circuits; while the MCCB is better used for high-power requirements. Type of electrical switch which protects the circuit from overload or short circuit.
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