EKM1-63S 4.5KA Miniature Circuit Breaker

> EKM1-63S 4.5KA Miniature Circuit Breaker

  • Categories:S1 series Din-rail type Circuit Breakers
  • MOQ:1
  • Brand:ETEK
  • FOB Port:Ningbo, Zhejiang
  • Terms of Payment:Western Union,T/T Paypal
  • Delivery Time:15 Wording Days

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.

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 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
Pollution degree 2
Thermo-magnetic release characteristic B,C,D

Mechanical Features

Electrical life 4,000 Cycles
Mechanical life 10,000 Cycles
Contact position indicator Yes
Protection degree IP20
Reference temperature for setting of thermal element 30℃
Ambient temperature (with daily average≤35℃) -5℃~+40℃
Storage temperature -25℃~+70℃


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

Auxiliary contact EKM1S-OF
Alarm contact EKM1S-FB
Shunt release EKM1S-MX
Over/Under voltage release EKM1S-MV+MN
 MCB Characteristics

Characteristics Curves

 MCB Characteristics Curves

Tripping characteristics

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.

Circuit Diagram

Circuit Diagram MCB

Overall and Installation Dimension(mm)

ekm1 63s 4 5ka mini circuit breaker 3

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