Electrical Power Distribution Thermal Magnetic Circuit Breaker 63A
The UKM30 series molded case circuit breaker is high-tech products in 21st century with advanced design, high performance, pleasant apprearance and delicate dimension.
Description:
UKM30 series molded case cicuit breaker is suitable for circuit AC 50Hz/60Hz, rated voltage up to AC660V, Rated operating current up to 250A. It features normal structure reliable performance, high breaking capacity, used for power distribution and protecting the circuit and electrical equipment
against overload and short circuit. It complies with standard of IEC 60947-2.
Specifications:
| Type | UKM30-63S | UKM30-100S | UKM30-250S |
| Rated current In(A) | 10,16,20,32,40,50,63 | 16,25,32,40,50, 63,75,100 | 100,125,150,175,200,225,250 |
| Number of poles | 3 | 3 | 4 | 3 | 4 |
| Rated voltage Ui(V) | AC690V | AC690V | AC690V |
| Arc distance (mm) | ≤50 | ≤50 | ≤50 |
| Rated ultimate short-circuit breaking capitily Icu/Ics(KA) | AC690V | - | 5/3 | 5/3 |
| AC400V | 10/5 | 50/35 | 50/35 |
| AC230V | 25/13 | 100/50 | 100/50 |
| Operational performance (times) | ON | 6000 | 6000 | 2000 |
| OFF | 8500 | 8500 | 7000 |
| Dimensions (mm) | a | 75 | 90 | 120 | 105 | 140 |
| b | 130 | 155 | 165 |
| c | 68 | 68 | 68 |
| Weight(kg) | 0.75 | 1.1 | 1.4 | 1.5 | 1.9 |
| Rated operation frequency | 120 | 120 | 120 |
Inverse time lag characteristic of circuit breaker for distribution:
| Name of test current | Times of rated current | (h)Conventional time | Intial state |
| Inm≤40 | 40<In≤250 | In>250 |
| Conventional non-tripping current | 1.05 | ≥1h | ≥2h | ≥2h | Cold |
| Conventional tripping current | 1.3 | <1h | <2h | <2h | Thermal |
| Returnable time | 3 | Current of returning characteristic | Current of returning characteristic | Current of returning characteristic | Cold |
| 3 | 5s | 8s | 12s | Cold |
Classification of mccb:
It is sorted into three-pole and four-poles according to product pole number. The type for neutral pole of four-pole products is sorted into four kinds:
Type A:N pole can’t be installed with over current tripping element , and it always switch on, can’t switch on and switch off together with other three poles.
Type B:N pole can’t be installed with over current tripping element, it can switch on and switch off together with other there poles.
Type C:N pole can be installed with over current tripping element, and it also can switch on and switch off together with other three poles.
Type D: N pole is installed with over current tripping element, and it always switch on, can’t switch off together with other poles.
Purpose:
Product Tags:
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Electrical Power Distribution Thermal Magnetic Circuit Breaker 63A Images
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