
JZM1 series moulded case circuit breaker(MCCB) is one of products developed and manufactured by Adopting international advanced technology. It is supplied with rated insulating voltage 800V and used for circuit of A. C. 50Hz, rated operating voltage AC 400V (or below), rated operating Current up to 800A for infrequent changing over and starting of the motors. The products conforms to IEC60947-2 standard.
Normal working situation
Type | JZM1-63L JZM1-63M | JZM1-125L JZM1-125M | JZM1-250L JZM1-250M | ||||||||||||
Rated frame level current lnm(A) | 63 | 125 | 250 | ||||||||||||
Rated current ln (A) | 10, 12, 16, 20, 25, 32, 40, 50, 63 | 16, 20, 25, 32, 40, 50, 63, 80, 100, 125 | 125, 160, 180, 200, 225, 250 | ||||||||||||
Rated insulated voltage Ui(AC V) | 500 | 800 | 800 | ||||||||||||
Rated impulse-stand voltage Ui(V) | 8000 | 8000 | 8000 | ||||||||||||
Rated working voltage Ue(AC V) | 400/415 | 400/415 | 400/415 | ||||||||||||
Poles | 3 | 4 | 3 | 4 | 3 | 4 | |||||||||
Rated limited short-circuit breaking capacity level | L | M | L | M | L | M | L | M | L | M | L | M | |||
Rated limited short-circuit breaking capacity lcu(KA) | 400/415V | 20 | 30 | 20 | 30 | 30 | 50 | 30 | 50 | 35 | 50 | 35 | 50 | ||
Rated working short-circuit breaking capacity lcs(KA) | 400/415V | 15 | 22.5 | 15 | 22.5 | 22.5 | 37.5 | 22.5 | 37.5 | 26.25 | 37.5 | 26.25 | 37.5 | ||
Operation characteristic (Times) | Connected | 2000 | 2000 | 1500 | |||||||||||
Break | 10000 | 10000 | 8500 | ||||||||||||
Outlook dimension | L | 135 | 150 | 165 | |||||||||||
W | 78 | 103 | 92 | 122 | 107 | 142 | |||||||||
H | 73.5 | 81.5 | 72 | 88 | 86 | 103 | |||||||||
Weight(g) | 735 | 849 | 1464 | 1952 | 1257 | 1493 | 1493 | 1900 | 1714 | 2014 | 1900 2014 | ||||
Arcing distance(mm) | ≤50 | ≤50 | ≤50 |
Type | JZM1-400M JZM1-400H | JZM1-630M JZM1-630H | JZM1-800H | |||||||||
Rated frame level current lnm(A) | 400 | 630 | 800 | |||||||||
Rated current ln (A) | 225, 250, 315, 350, 400 | 400, 500, 630 | 630, 700, 800 | |||||||||
Rated insulated voltage Ui(AC V) | 800 | 800 | 800 | |||||||||
Rated impulse-stand voltage Ui(V) | 8000 | 8000 | 8000 | |||||||||
Rated working voltage Ue(AC V) | 400/415 | 400/415 | 400/415 | |||||||||
Poles | 3 | 4 | 3 | 4 | 3 | 4 | ||||||
Rated limited short-circuit breaking capacity level | M | H | M | H | M | H | M | H | H | H | ||
Rated limited short-circuit breaking capacity lcu(KA) | 400/415V | 50 | 70 | 50 | 70 | 50 | 70 | 50 | 70 | 80 | 80 | |
Rated working short-circuit breaking capacity lcs(KA) | 400/415V | 37.5 | 52.5 | 37.5 | 52.5 | 37.5 | 52.5 | 37.5 | 52.5 | 60 | 60 | |
Operation characteristic (Times) | Connected | 1000 | 1000 | 500 | ||||||||
Break | 5000 | 4000 | 3000 | |||||||||
Outlook dimension | L | 257 | 270 | 280 | ||||||||
W | 150 | 198 | 182 | 240 | 210 | 280 | ||||||
H | 106.5 | 110 | 115.5 | |||||||||
Weight(g) | 5420 | 7443 | 6116 | 7116 | 7116 | 9929 | 8526 | 11731 | ||||
Arcing distance(mm) | ≤50 | ≤100 | ≤100 |
Note: 6A without thermal protection
The N-pole of four-poles breaker is sited at the right side of the product has four types:
Type A: Without current trip-lease on N pole which making all the time, not closing and opening with the other three poles.
Type B: Without current trip-release on N pole which closing and opening with the other poles.
Type C: With current trip-release which closing and opening with the other three poles.
Type D: With current trip-release which making all the time not closing and opening with the other three poles.







