Page 16 - Yueqing Dingqiao Electric Co., Ltd. (English)

Characteristics and Performance
TNSX MCCB from 400A to 630A

Common characteristics
Insulation voltage (V) Ui 800
Insulation voltage for ELCB Ui 500
Rated
voltages Impulse withstand voltage (kV) Uimp 8
Operational voltage (V) Ue AC 50/60 Hz 690
Operation voltage for ELCB Ue AC 50/60 Hz 440
Suitability for isolation IEC/EN 60947-2 yes
Utilisation category A
Pollution degree IEC 60664-1 3

Circuit breakers TNSX400 TNSX630
Breaking capacity levels F N H F N H
Electrical characteristics as per IEC/EN 60947-2
TNSX 400N/630N 3P
Rated current (A) In 40 °C 400 630
Number of poles 3, 4 3, 4
Breaking capacity (kA rms)
220/240 V 40 85 100 40 85 100
380/415 V 36 50 70 36 50 70
440 V 30 42 65 30 42 65
lcu AC 50/60 Hz
500 V 25 30 50 25 30 50
525 V 20 22 35 20 22 35
660/690 V 10 10 20 10 10 20
Service breaking capacity (kA rms)
220/240 V 40 85 100 40 85 100
380/415 V 36 50 70 36 50 70
440 V 30 42 65 30 42 65
lcs AC 50/60 Hz
500 V 25 30 50 25 30 50
TNSX 400N/630N 4P 525 V 10 11 11 10 11 11
660/690 V 10 10 10 10 10 10
Durability (C-O cycles) Mechanical 15000 15000
Characteristics as per UL 508
240 V 85 85 85 85 85 85
Breaking capacity (kA rms) AC 50/60 Hz 480 V 35 50 65 35 50 65
600 V 20 10 20 20 20 20
Protection and measurements ● ●
Short-circuit protection Magnetic only - -
Thermal magnetic ● ●
● ●
with neutral protection (Off-0.5-1-OSN) ● ●
Trip unit Electronic
with ground-fault protection ● ●
with zone selective interlocking (ZSI) ● ●
By Vigi add-on ● ●
Earth-leakage protection
By Vigirex relay ● ●
Installation / connections
Dimensions and weights
Dimensions (mm) Fixed, front connections 2/3P 140 x 255 x 110 140 x 255 x 110
W x H x D 4P 185 x 255 x 110 185 x 255 x 110
2/3P 6.05 6.2
Weight (kg) Fixed, front connections
4P 7.90 8.13
Connections
Connection terminals Pitch With/without spreaders 45/52.5 mm，45/70 mm 45/52.5 mm，45/70 mm
Shunt Trip
Large Cu or Al cables Cross-section mm² 4 x 240 4 x 240
Source-changeover system
Manual mechanical interlocking ● ●
Automatic source-changeover ● ●

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