| Customization: | Available |
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| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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STM11-125 Series 10KA AC Miniature Circuit Breaker 1P 2P 3P 125A 230V 400V
General
STM11-125 Series miniature circuit breaker can quikcly break the fault currents in AC power distribution system, especially for the AC system of power projects in measurement and protection screen and electric screen between leapfrong tripping accident the series has excellent performance, and avoid the occurrence of the fault. It is used on bulidnings and similar places the line facilities of over current protection, can also be used in less frequent break operation. And has small volume, breaking capacity, arcing distance is short, fast closing and installation is convenient.
Specifications
| Standard | IEC/EN 60947-2 | ||
| Electrical features |
Rated current In | A | 1,2,4,6,10,16,20,25,32,40,50,63,80,100,125 |
| Poles | P | 1,2,3,4 | |
| Rated voltage Ue | V | AC 230/400V ; DC 24,48,120,250,500,750,1000 | |
| Insulation voltage Ui | V | 500 | |
| Rated frequency | Hz | 50/60 | |
| Rated breaking capacity | A | 6000,10000 | |
| Rated impulse withstand voltage(1.2/50)Uimp | V | 4000 | |
| Dielectric test voltage at ind.Freq.for 1 min | Kv | 2 | |
| Pollution degree | 2 | ||
| Thermo-magnetic release characteristic | B,C,D | ||
| Mechanical features |
Electrical life | t | 4000 |
| Mechanical life | t | 10000 | |
| Protection degree | IP20 | ||
| Reference temperature for setting of thermal element |
ºC | 30 | |
| Ambient temperature (with daily average ≤35ºC) |
ºC | -5~+40(Special application please refer to temperature compensation correction) |
|
| Storage temperature | ºC | -25~+70 | |
| Installation | Terminal connection type | Cable/Pin-type busbar | |
| Terminal size top/bottom for cable | mm2 | 25 | |
| AWG | 18-3 | ||
| Therminal size top/bottom for busbar | mm2 | 25 | |
| AWG | 18-3 | ||
| Tightening torque | N*m | 2 | |
| In-lbs | 18 | ||
| Mounting | on DIN rail EN 60715(35mm)by means of fast clip device | ||
| Connection | From top and bottom |
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Test current (A) |
Rated current (A) |
Requested time | Result | Start station | Remark |
| 1.13In | all | t>=1h | Don't trip | Cool | |
| 1.45In | All | T<1h | trip | heat | Current ascends the requested value stably in 5s |
| 2.55In | In<=32A | 1s<t<60s | trip | Cool | Auxiliary switch closed, power is on |
| 2.55In | In>32A | 1s<t<120s | trip | Cool | Auxiliary switch closed, power is on |
| 5In(Cmode) | All | t>=0.1s | Don't trip | Cool | Auxiliary switch closed, power is on |
| 10In(Cmode) | All | T<0.1s | trip | Cool | Auxiliary switch closed, power is on |
| 10(Dmode) | All | t>=0.1s | Don't trip | Cool | Auxiliary switch closed, power is on |
| 14In(Dmode) | All | T<0.1s | trip | Cool | Auxiliary switch closed, power is on |
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