miniature circuit breaker,
miniature current circuit breaker
STM11-125 series high breaking capacity mini circuit breaker is used in AC50/60Hz, rated voltage of 230V
3, 4 poles 400V, rated current to 125A for overload and short-circuit protection as well as for unfrequented switching under normal case.It is used extensively for industry, commercial and household.This product conform to IEC60898 standard. Rated Volatage is 12,24,48,120,220,250,500,750,1000VDC .
High breaking capacity , all rated current can reach 6KA,10KA;
Many kinds of accessories can be chosen, in modularize and flexibility combine that make the customer install conveniently;
The cover and function parts both are made of inflaming retarding, bear high temperature and bear impact plastic;
The breaker is applicable to lighting distribution system in industrial enterprise, commercially district, high-rise building and dwelling house.
1. 1.Application:For protecting cables and equipments against overload and short circuit.
2. 2.General rules for choosing MCB.
The earthing systems,short-circuit current at the circuit breaker installation point,which must always be less than the breaking capacity of this device,network normal voltage.
B curve (3-5In) protection and control of the circuits against length cables in TN and IT systems.
C curve (5-10In) protection and control of the circuits against overloads and short-circuits; protection for resistive and inductive loads with low inrush current.
D curve (10-14In) protection and control of the circuits against overloads and short-circuits; protection for circuits which supply loads with high inrush current at the circuit closing (LV/LV transformers,breakdown lamps.)
|Rated current In||A||1,2,4,6,10,16,20,25,32,40,50,63;63,80,100,125A|
|Rated voltage Ue||V||230/400|
|Insulation voltage Ui||V||500|
|Rated breaking capacity||A||4500,6000|
|Rated impulse withstand voltage(1.2/50)Uimp||V||4000|
|Dielectric test voltage at ind.Freq.for 1 min||Kv||2|
|Thermo-magnetic release characteristic||B,C,D|
|Reference temperature for setting
of thermal element
(with daily average ≤35℃)
|℃||-5~+40(Special application please refer to
temperature compensation correction)
|Installation||Terminal connection type||Cable/Pin-type busbar|
|Terminal size top/bottom for cable||mm2||25|
|Therminal size top/bottom for busbar||mm2||25|
|Mounting||on DIN rail EN 60715(35mm)by means of fast clip device|
|Connection||From top and bottom|
Continuance Service and support
Quality Reliability and Long Product Life.
Contact Person: Mr. Sunny Zhang