miniature circuit breaker,
miniature current circuit breaker
STM9-63 series high breaking capacity mini circuit breaker is used in AC50/60Hz, rated voltage of 230V
3, 4 poles 400V, rated current to 63A 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 Short-circuit capacity(Icn)||3KA,4.5KA,6KA|
|Magnetic releases||B curve: between 3and 5 In|
|C curve: between 5and 10In|
|D curve: between 10 and 14In|
|Electro-mechanical endurance||over 6000 cycles|
|Rated current In||A||1,2,4,6,10,16,20,25,32,40,50,63|
|Rated voltage Ue||V||AC 240/415|
|Insulation voltage Ui||V||500|
|Rated breaking capacity||A||45,006,000|
|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|
1. Application:For protecting cables and equipments against overload and short circuit.
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 (10-50In) 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.)
Q: If I'm interested in your MCB when I can receive your quotation and detail information after send the enquiry?
All your enquiry will be replied in 24hours.
Q: Your MCB seems perfect but what's the difference between you and other suppliers? Because I find some cheaper price from others!
Our teams have more than 20years experience in the field of Circuit Breaker, We pay more attention for the quality, the price decide the quality; The quality is our life !
Q: Do you have a catalogue? Can you send me the catalogue to have a check of all your products?
Yes, We have product catalogue. Please contact us on line or send an Email to sending the catalogue.
Q: Do you have any of chat tools ? So that we can communicate with each other more convience ?
Yes, our Wechat/ WhatsApp: 008613868610160; Skype: sanny888345 ; QQ:184842077
Q: I need your price list of all your products, do you have a price list?
We do not have a price list of all of our products. Because we have so many items, and it is impossible to mark all of their price on a list. And the price are always changing because of the producing cost. If you want to check any price of our products, please feel free to contact us. We will send offer to you soon!
Contact Person: Mr. Sunny Zhang