Industrial Miniature Circuit Breakers EKM1-63S 4.5KA. Generally used in a loadcenter, panelboard, or similar device, miniature circuit breakers are a specific type of circuit breaker, used to switch and protect the lowest common distribution voltage in an electrical system.
|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 breaking capacity||1-40A，6000A/50-63A，4500A|
|Energy limiting class||3|
|Rated impulse withstand voltage(1.5/50) Uimp||4,000V|
|Dielectric test voltage at ind. Freq. for 1 min||2kV|
|Thermo-magnetic release characteristic||B,C,D|
|Electrical life||4,000 Cycles|
|Mechanical life||10,000 Cycles|
|Contact position indicator||Yes|
|Reference temperature for setting of thermal element||30℃|
|Ambient temperature (with daily average≤35℃)||-5℃~+40℃|
|Terminal connection type||Cable/Pin-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||On DIN rail EN 60715 (35mm) by means of fast clip device|
|Connection||Power supply in both directions|
Combination with accessories
|Over/Under voltage release||EKM1S-MV+MN|
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 (transformes, x-ray machines etc,)Short circuit release is set to (10-20)In.
Overall and Installation Dimension(mm)