EKM3-63 Miniature Circuit Breaker is the latest product developed by our company. This series of products have complete specifications and the max rated current can reach 63A. This series of products have clear green and red marks for ON-OFF and transparent cover for line marks. EKM3-63 can be used with other products for residential power distribution systems ≤63A.
| Electrical Features |
Rated current In |
1,2,3,4,5,6,8,10,13,16,20,25,32,40,50,63A |
|
Poles |
1P, 1P+N, 2P, 3P, 3P+N,4P |
|
|
Rated voltage Ue |
240/415V~ |
|
|
Insulation voltage Ui |
500V |
|
|
Rated frequency |
50/60Hz |
|
|
Rated breaking capacity |
6,000A |
|
|
Energy limiting class |
3 |
|
|
Rated impulse withstand voltage(1.5/50) Uimp |
4,000V |
|
|
Dielectric test voltage at ind. Freq. for 1 min |
2kV |
|
|
Pollution degree |
2 |
|
|
Thermo-magnetic release characteristic |
B, C, D |
|
| Mechanical Features | Electrical life | 8,000 Cycles |
| Mechanical life | 20,000 Cycles | |
| Contact position indicator | Yes | |
| Protection degree | IP20 | |
| Reference temperature for setting of thermal elements | 30℃ | |
| Ambient temperature (with daily average≤35℃) | -5℃~+40℃ | |
| Storage temperature | -25℃~+70℃ | |
| Installation | Terminal connection type | Cable/Pin-type busbar/U-type busbar |
| Terminal size top/bottom for cable | 25mm2 18-3AWG | |
| Terminal size top/bottom for busbar | 25mm2 18-3AWG | |
| Tightening torque | 2.5Nm 22In-Ibs | |
| Mounting | Mounting on DIN rail EN60715(35mm) by means of fast clip device | |
| Connection | Power supply in both directions | |
| Combination with accessories | Auxiliary contact | EKM1-OF |
| Alarm contact | EKM1-FB | |
| Shunt release | EKM1-MX | |
| Over/Under voltage release | EKM1-MV+MN |
MCB Characteristics Curves
|
Thermal Tripping
|
Magnetic Tripping
|
|||||
|
Asper IEC60898
|
No tripping current
|
Tripping current I2
|
Time Limits t
|
Hold current I4
|
Trip current I5
|
Time Limits t
|
|
B Curve
|
1.13×IN
|
≥1h
|
3×IN
|
≥0.1s
|
||
|
1.45×IN
|
＜1h
|
5×IN
|
＜0.1s
|
|||
|
C Curve
|
1.13×IN | ≥1h | 5×IN | ≥0.1s | ||
| 1.45×IN | ＜1h |
10×IN
|
＜0.1s | |||
|
D Curve
|
1.13×IN
|
≥1h
|
10×IN
|
≥0.1s
|
||
| 1.45×IN |
＜1h
|
20×IN
|
＜0.1s
|
|||
Based on the Tripping Characteristics, MCB are available in “B”, “C” and “D” curve to suit different types of applications.
“B” Curve for protection of electrical circuits with equipment that does not cause surge current (lighting and distribution circuits) Short circuit release is set to (3-5) In.
“C” Curve for protection of electrical circuits with equipment that cause surge current (inductive loads and motor circuits) Short circuit release is set to (5-10) In.
“D” Curve for protection of electrical circuits with cause high inrush current, typically 12-15 times the thermal rated current (transforms, x-ray machines etc,) Short circuit release is set to (10-20) In.
ETEK Electrical has advanced production management system and production process.200 employees,4 production workshops,6 automatic production lines more than 60 sets of test and detection equipment.
The annual production capacity is as follows:15 million miniature circuit breakers,1 million residual current circuit breaker,150 thousand moulded case circuit breakers,20 thousand frame circuit breakers,500 thousand AC contactors,and 1 million button indicator lights.
A complete set of parts testing standard and supplier managementstan dard has been developed.In the manufacturing process , there is parts inspection , process inspection. Verification inspection Parts inspection includes welding strength , welding size and appearance inspection.
Process inspection includes mechanical operation test , contact terminal parameter test and so on Verification inspection includes long delay characteristic inspection other characteristic inspection , appearance inspection and packaging inspection.
ETEK has made a great deal of investment in thedevelopment of new products and the construction of R & D team. Now , the company has independent R & D labs 3 senior R & D engineers and 5 professional technicians and isalso equipped with advanced testing equipment.
Most of the products are supportedCCC certificate and international certificates certified by TUV Intertek such as CB SEMKO , CE INMETRO and SAA. In order to reduce the damage during the transportation our products have pallet packaging rich industry experience.
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