Selecting Masterpact MTZ3 Circuit Breakers
Ratings for UL489 Masterpact MTZ3 Circuit Breakers |
|||
---|---|---|---|
Frame Rating |
4000/5000/6000 A |
||
Number of Poles |
3/4 |
||
Interrupting Rating Code |
H |
L |
|
Interrupting Current (kAIR) |
240 Vac 50/60 Hz |
100 |
200 |
480 Vac 50/60 Hz |
100 |
150 |
|
600 Vac 50/60 Hz |
85 |
100 |
|
Short-Time Withstand Current (kA) |
Vac 50/60 Hz, 0.5 s |
85 |
100 |
Built-In Instantaneous Override (Peak kA ±10%) |
170 |
170 |
|
Close and Latch Ratings (Peak kA) |
Vac 50/60 Hz |
90 |
90 |
Tested to show arc flash hazard risk category (NFPA70E) |
— |
— |
|
Breaking Time |
25 to 30 ms (with no intentional delay) |
||
Closing Time |
70 ms |
||
Sensor Rating |
2000–4000 A |
||
Endurance
Rating (C/O Cycles) |
Mechanical |
5000 |
5000 |
Electrical |
1000 |
— |
Ratings for ANSI C37 Certified Masterpact MTZ3 Circuit Breakers |
||||
---|---|---|---|---|
Frame Rating |
||||
Interrupting Rating Code |
H2 |
H3 |
||
Interrupting Current (kAIR) (50/60 Hz) |
254 Vac |
85 |
100 |
200 |
508 Vac |
85 |
100 |
200 |
|
635 Vac |
85 |
85 |
130 |
|
Short-Time Withstand Current (kA) (50/60 Hz) |
Vac, 0.5 s |
85 |
85 |
100 |
Built In Instantaneous Override (Peak kA ±10%) |
— |
— |
270 |
|
Close and Latch Ratings (Peak kA) (50/60 Hz) |
Vac |
170 |
170 |
90 |
Tested to show arc flash hazard risk category (NFPA70E) |
— |
— |
— |
|
Breaking Time |
25 to 30 ms (with no intentional delay) |
|||
Closing Time |
70 ms |
|||
Sensor Rating |
2000–4000 A |
|||
Endurance Rating (C/O Cycles) (with no maintenance) |
Mechanical |
5000 |
||
Electrical |
1000 |
Ratings for IEC60947–2 Rated Masterpact MTZ3 Circuit Breakers |
||||
---|---|---|---|---|
Frame Rating |
4000B/5000/6300 A |
|||
Interrupting Rating Code |
H1 |
H2 |
||
Ultimate
Breaking Capacity |
Icu |
220/415 Vac |
100 |
150 |
440 Vac |
100 |
150 |
||
525 Vac |
100 |
130 |
||
690 Vac |
100 |
100 |
||
1150 Vac |
— |
— |
||
Service Breaking Capacity |
Ics |
%Icu |
100% |
100% |
Short-Time Withstand Current (kA) |
Icw |
Vac 50/60 Hz, 1 s |
100 |
100 |
Vac 50/60 Hz, 3 s |
100 |
100 |
||
Built-In Instantaneous Override (Peak kA ±10%) |
— |
117 |
||
Rated making
Current |
Icm |
220/415 Vac |
220 |
330 |
440 Vac |
220 |
330 |
||
525 Vac |
187 |
286 |
||
690 Vac |
187 |
220 |
||
1150 Vac |
— |
— |
||
Breaking Time |
25 ms |
|||
Closing Time |
ms |
< 80 |
||
Sensor Rating |
2000–4000 A |
|||
Endurance
Rating (with no maint.) |
Mechanical |
5 |
||
Electrical 440 V |
1.5 |
1.5 |
||
Electrical 1150 V |
— |
— |