Moulded case circuit breaker（MCCB） JCNSX-400NT JCNSX-630NT
CODING RULES | 
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COMMON CHARACTERISTICS | Rated voltages |
| Insulation voltage (V) | Ui |
| 800 |
| Impulse withstand voltage (kV) | Uimp |
| 8 |
| Operational voltage (V) | Ue | AC 50/60 Hz | 690 | Suitability for isolation | IEC/EN 60947-2 | Yes | Utilisation category | A | Pollution degree |
| IEC 60664-1 | 3 |
COMMON CHARACTERISTICS | Control |
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| Manual | With toggle | ■ |
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| With direct or extended rotary handle | ■ |
| Electrical | With remote control | ■ | Versions |
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| Fixed |
| ■ |
| Withdrawable | Plug-in base | ■ |
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| Chassis | ■ |
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Circuit breakers | JCNSX400 |
Breaking capacity levels | F | N | H | S | L |
Electrical characteristics as per IEC/EN 60947-2 |
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Rated current (A) | In | 40 ℃ |
| 400 |
Number of poles |
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| 3, 4 |
Breaking capacity (kA rms) |
| lcu | AC 50/60 Hz | 220/240 V | 40 | 85 | 100 | 120 | 150 |
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| 380/415 V | 36 | 50 | 70 | 100 | 150 |
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| 440 V | 30 | 42 | 65 | 90 | 130 |
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| 500 V | 25 | 30 | 50 | 65 | 70 |
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| 525 V | 20 | 22 | 35 | 40 | 50 |
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| 660/690 V | 10 | 10 | 20 | 25 | 35 |
Service breaking capacity (kA rms) |
| lcs | %Icu | <500V | 100% |
Durability (C-O cycles) |
| Mechanical |
| 15000 |
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| Electrical | 415V | In | 7000 |
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| 440V | In/2 | 12000 |
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| In | 6000 |
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| 690 V | In/2 | 6000 |
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| In | 3000 |
Characteristics as per Nema AB1 |
Breaking capacity (kA rms) |
| AC 50/60 Hz | 240 V | 40 | 85 | 100 | 120 | 150 |
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| 480 V | 30 | 42 | 65 | 90 | 130 |
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| 600 V | - | 20 | 35 | 40 | 50 |
Characteristics as per UL 508 |
Breaking capacity (kA rms) |
| AC 50/60 Hz | 240 V | 85 | 85 | 85 | - | - |
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| 480 V | 35 | 50 | 65 | - | - |
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| 600 V | 20 | 20 | 20 | - | - |
Protection and measurements |
Short-circuit protection | Magnetic only | ■ |
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Overload / short-circuit protection | Thermal magnetic | ■ |
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| Electronic |
| ■ |
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| With neutral protection (Off-0.5-1-OSN) | ■ |
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| With ground-fault protection | ■ |
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| With zone selective interLocking (ZSI) | ■ |
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Display / I,U,f,P,E,THD measurements / interruPTed-current measurement | ■ |
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Options | Power Meter display on door | ■ |
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| Operating assistance | ■ |
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| Counters | ■ |
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| Histories and alarms | ■ |
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| Metering Com | ■ |
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| Device status/control Com | ■ |
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Earth-leakage protection | By Vigi add-on | ■ |
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| By Vigirex relay | ■ |
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Installation / connections |
Dimensions and weights |
Dimensions (mm) W x H x D | Fixed, front connections | 2/3P | 140 x 255 x 110 |
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| 4P | 185 x 255 x 110 |
Weight (kg) | Fixed, front connections | 2/3P | 6.05 |
|
| 4P | 7.9 |
Connections |
Connection terminals | Pitch | With/without spreaders | 45/52.5 mm 45/70 mm |
Large Cu or Al cables | Cross-section | mm2 | 4 x 240 |
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Circuit breakers | JCNSX630 |
Breaking capacity levels | F | N | H | S | L |
Electrical characteristics as per IEC/EN 60947-2 |
|
Rated current (A) | In | 40 ℃ |
| 630 |
Number of poles |
|
|
| 3, 4 |
Breaking capacity (kA rms) |
| lcu | AC 50/60 Hz | 220/240 V | 40 | 85 | 100 | 120 | 150 |
|
|
| 380/415 V | 36 | 50 | 70 | 100 | 150 |
|
|
| 440 V | 30 | 42 | 65 | 90 | 130 |
|
|
| 500 V | 25 | 30 | 50 | 65 | 70 |
|
|
| 525 V | 20 | 22 | 35 | 40 | 50 |
|
|
| 660/690 V | 10 | 10 | 20 | 25 | 35 |
Service breaking capacity (kA rms) |
| lcs | %Icu | <500V | 100% |
Durability (C-O cycles) |
| Mechanical |
| 15000 |
|
| Electrical | 415V | In | 7000 |
|
|
| 440V | In/2 | 8000 |
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| In | 4000 |
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| 690 V | In/2 | 6000 |
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| In | 2000 |
Characteristics as per Nema AB1 |
Breaking capacity (kA rms) |
| AC 50/60 Hz | 240 V | 40 | 85 | 100 | 120 | 150 |
|
|
| 480 V | 30 | 42 | 65 | 90 | 130 |
|
|
| 600 V | - | 20 | 35 | 40 | 50 |
Characteristics as per UL 508 |
Breaking capacity (kA rms) |
| AC 50/60 Hz | 240 V | 85 | 85 | 85 | - | - |
|
|
| 480 V | 35 | 50 | 65 | - | - |
|
|
| 600 V | 20 | 20 | 20 | - | - |
Protection and measurements |
Short-circuit protection | Magnetic only | ■ |
|
|
|
|
Overload / short-circuit protection | Thermal magnetic | ■ |
|
|
|
|
| Electronic |
| ■ |
|
|
|
|
|
| With neutral protection (Off-0.5-1-OSN) | ■ |
|
|
|
|
|
| With ground-fault protection | ■ |
|
|
|
|
|
| With zone selective interlocking (ZSI) | ■ |
|
|
|
|
Display / I,U,f,P,E,THD measurements / interrupted-current measurement | ■ |
|
|
|
|
Options | Power Meter display on door | ■ |
|
|
|
|
| Operating assistance | ■ |
|
|
|
|
| Counters | ■ |
|
|
|
|
| Histories and alarms | ■ |
|
|
|
|
| Metering Com | ■ |
|
|
|
|
| Device status/control Com | ■ |
|
|
|
|
Earth-leakage protection | By Vigi add-on | ■ |
|
|
|
|
| By Vigirex relay | ■ |
|
|
|
|
Installation / connections |
Dimensions and weights |
Dimensions (mm) W x H x D | Fixed, front connections | 2/3P | 140 x 255 x 110 |
|
| 4P | 185 x 255 x 110 |
Weight (kg) | Fixed, front connections | 2/3P | 6.2 |
|
| 4P | 8.13 |
Connections |
Connection terminals | Pitch | With/without spreaders | 45/52.5 mm 45/70 mm |
Large Cu or Al cables | Cross-section | mm2 | 4 x 240 |
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Dimensions and mounting (fixed type) |
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