1P, 2P, 3P, B C D curve, MCB, ETM12, AC, miniature circuit breaker, plug in
Feature
ETM12 series MCB is in complied with IEC 60898-1 standard. It has the certification of Semko, CE, CB.
The breaking capacity of ETM12 is 6KA, or 4.5KA
The tripping type is B, C or D curve.
The rated current is (1A, 2A, 3A, 4A) 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A. The rated current is related to different area using for example one pole 10a to 16a ampere is normally used for lighting, 20 ampere to 33 ampere is normally used for kitchen and bathroom area, also used for air conditioner and other line equipment. Some customers will choose 2 pole, 40ampere to 63 ampere as main switch instead of isolator.
Rated insulation voltage: 230V, 240V, 230 / 240V (1 Pole); 400 / 415V (2 poles, 3 poles)
It has single pole (1p), double poles (2p), three poles (3p), and four poles, which is one inch breaker sizes per pole.
There is a position indicator equipped on the products, Red is on, Green is off.
The MCB terminals are IP20 protection which is designed for finger and hand touch safe to keep the safety during installation.
The ETM12 MCB can work reliably in harsh environment, in ambient temperature from -25°C to 55°C.
The electrical life can be up to 8000 operations and mechanical life up to 20000 operations, while the IEC requirement is only 4000 operations and 10000 operations.
The mounting type is plug-in on top terminal ,wiring bottom.
Technical Characteristic
|
Standard |
IEC/EN 60898-1 |
||
|
Electrical |
Rated current in |
A |
( 1 2 3 4) 6 10 16 20 25 32 40 50 63 |
|
features |
Poles |
1P 2P 3P 4P |
|
|
Rated voltage Ue |
V |
230/400,240/415 |
|
|
Insulation coltage Ui |
V |
500 |
|
|
Rated frequency |
Hz |
50/60Hz |
|
|
Rated breaking capacity |
A |
4.5/6KA |
|
|
Rated impulse withstand voltage (1.2/50)Uipm |
V |
6000 |
|
|
Dielectric test voltage at and ind.Freq.for 1min |
KV |
2 |
|
|
Pollution degree |
2 |
||
|
Themo-magnetic release characteristic |
B C D |
||
|
Mechanical |
Electrical life |
above 4000 |
|
|
features |
Machanical life |
above 10000 |
|
|
Contact position indicator |
Yes |
||
|
Protection degree |
IP 20 |
||
|
Reference temperature of setting of thermal element |
°C |
30 or 50 |
|
|
Ambient temperature(with daily average≤35°C) |
°C |
-25~+55 |
|
|
Storage temperature |
°C |
-25...+70 |
|
|
Installation |
Terminal size top/bottom for cable |
mm² |
25 |
|
AWG |
18-3 |
||
|
Terminal size top/bottom for busbar |
mm² |
25 |
|
|
AWG |
18-3 |
||
|
Tightening torque |
N*m |
3.0 |
|
|
In-lbs. |
22 |
||
|
Mounting |
Plug in type |
Our goal should be to consolidate and enhance the top quality and service of existing products, while often creating new products to meet different customers' needs for China MCB series, if possible, make sure you send your necessities along with a detailed list , including the styles/items and quantities you need. We will then mail you our highest selling price. China low price China miniature circuit breaker, miniature circuit breaker, we will serve you wholeheartedly with first-class quality and competitive price and best after-sales service to make you satisfied, sincerely look forward to cooperating with you to create a better future !
The following are several principles for choosing MCB: 1) The rated voltage of the circuit breaker should not be less than the rated voltage of the line; 2) The rated current of the circuit breaker and the rated current of the overcurrent release are not less than the calculated current of the line; 3) The rated short-circuit breaking capacity of the circuit breaker is not less than the maximum short-circuit current in the line; 4) The selection of power distribution circuit breakers needs to consider the short-time delay short-circuit on-off capability and the coordination between delay protection levels; 5) The rated voltage of the undervoltage release of the circuit breaker is equal to the rated voltage of the line; 6) When used for motor protection, the selection of the circuit breaker should consider the starting current of the motor and make it not operate within the starting time; 7) The selection of circuit breakers should also consider the selective coordination of circuit breakers and circuit breakers, circuit breakers and fuses.
