800A MCCB Thermal Magnetic Circuit Breaker , Industrial Circuit Breakers
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 | UKM30-400S | UKM30-630S | UKM30-800S |
| Rated current In(A) | 250,300,350,400 | 400,500,630 | 630,700,800 |
| Number of poles | 3 | 4 | 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 | 10/10 | 10/10 | 15/15 |
| AC400V | 70/70 | 70/70 | 70/70 |
| AC230V | 100/100 | 100/100 | 100/100 |
| Operational performance (times) | ON | 1000 | 500 | 500 |
| OFF | 4000 | 2500 | 2500 |
| Dimensions (mm) | a | 140 | 185 | 210 | 280 | 210 | 280 |
| b | 257 | 275 | 275 | 275 |
| c | 103 | 103 | 103 | 103 |
| Weight(kg) | 5.5 | 7.5 | 10.9 | 14.2 | 11.4 | 15.7 |
| Rated operation frequency | 60 | 20 | 20 |
Protection Characteristic
The thermodynamic release of a circuit breaker provides the feature of inverse time-delay, while the magnetic release is the instantaneous operation as shown on table 2(distribution circuit breaker) and table 3 (motor protection circuit breaker).
Table 2
Rated current ofrelease (A) | Thermodynamic release( ambient temp ) | Operationalcurrent ofmagneticrelease (A) |
1.05In(cold state)
Inoperative time(h) | 1.30In(heat state)
Operative time(h) |
10≤In≤63 | ≥1 | < 1 | 10In±20% |
225≤In≤630 | ≥2 | < 2 |
100≤In≤800 | ≥2 | < 2 | 5In±20% |
Table 3
Rated current ofrelease (A) | Thermodynamic release( ambient temp ) | Operationalcurrent ofmagneticrelease (A) |
1.0In(cold state)
Inoperative time(h) | 1.20In(heat state)
Operative time (h) | 1.50In(heat state)
Operative time (h) | 7.2In(cold state)
Operative time(h) |
10≤In≤225 | ≥2 | <2 | ≤4min
≤8min | 4s< Tp ≤10s
6s< Tp ≤20s | 12In±20% |
225≤In≤630 |
Mounting:
Why choose KRIPAL Electric:
Long history: We founded in 1987, more than 25 years specialized in electric system.
Number of Professional Workers: 650 in total
Certification: We have passed ISO9001:2000, ROHS, CE, CB, Semko, TUV, SAA, UL, KEMA...
Quality Control: we make quality control for each item separately and have serious quality control system to make our brand go further.
Fast Service: your inquiries / comments / feedbacks will be replied within 24 hours
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