350A Small Molded Case Circuit Breaker 4 Pole MCCB with Motor Distribution
| Place of Origin: | Zhejiang |
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Company Profile
| Location: | Hangzhou, Zhejiang, China (Mainland) |
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| Business Type: | Manufacturer |
| Main Products: | Rotary Isolator Switch, AC Contactor, Industrial Plugs |
Product Detail
| Model No.: | UKM30-400 |
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Product Description
350A Small Molded Case Circuit Breaker 4 Pole MCCB with Motor Distribution
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:
Molded Case Circuit Breakers UKM30 series (hereinafter called as UKM30 MCCB) is a new designed MCCB Developed and manufactured adopting international advanced technology. UKM30 MCCB rated insulating Voltage AC 800V is suitable for using in the circuit of AC 50Hz /60Hz, rated voltage up to 690V, rated Working current up to 2500A to distribute electric power and to protect the line and the equipment from being Damaged due to overload, short current and under-voltage. It can also be used for infrequently switch and Starting of motor and for motor overload, short circuit and under-voltage protections. UKM30 MCCB with the Advantages of the small volume, high breaking capacity, short over-arcing (some of specification is zero Arcing), strong anti-vibration and so on.
Specifications:
| Type | UKM30-100S | UKM30-250S | UKM30-400S | ||||
| Rated current In(A) | 16,25,32,40,50, 63,75,100 | 100,125,150,175,200,225,250 | 250,300,350,400 | ||||
| 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 | 5/3 | 5/3 | 10/10 | |||
| AC400V | 50/35 | 50/35 | 70/70 | ||||
| AC230V | 100/50 | 100/50 | 100/100 | ||||
| Operational performance (times) | ON | 6000 | 2000 | 1000 | |||
| OFF | 8500 | 7000 | 4000 | ||||
| Dimensions (mm) | a | 90 | 120 | 105 | 140 | 140 | 185 |
| b | 155 | 165 | 257 | ||||
| c | 68 | 68 | 103 | ||||
| Weight(kg) | 1.1 | 1.4 | 1.5 | 1.9 | 5.5 | 7.5 | |
| Rated operation frequency | 120 | 120 | 60 | ||||
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) |
1.30In(heat state) |
||
|
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 ) |
Operational current of magnetic release (A) |
|||
|
1.0In(cold state) |
1.20In(heat state) |
1.50In(heat state) |
7.2In(cold state) |
||
|
10≤In≤225 |
≥2 |
<2 |
| ||