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MCB 10kA

MCB 10kA

An MCB operates as an automatic switch that opens in the event of excessive current flowing through the circuit and once the circuit returns to normal, it can be reclosed without any manual replacement.


  • Large & Dual Terminals
  • IP 20 Protection
  • MCB Padlock
  • ON/OFF Indication
  • Energy Limiting Class 3 
  • BI-stable Din Clip
  • Effective Air Circulation
  • 10kA Breaking Capacity
  • Fire Retardant
  • Low Power Consumption
  "B" "C"
Standard Conformity IS/IEC 60898-1
No. of Pole 1P, 1P+N, 2P, 3P, 3P+N, 4P*
Magnetic Release Setting (3-5)In (5-10)In
Method of Mounting Clip on Din rail (35x7.5mm)
Rated Operational Voltage 240/415V
Rated Current 6 to 63A*
Rated Frequency 50Hz
Rated Short Circuit Capacity 10kA
Max. Value of I2 t (Joule Integral) 125000
Rated Insulation Voltage 660V
Rated Impulse with stands Voltage 4kV
Material Group III a
IP Category IP20
Ambient Temp. -50 to 55℃
Tightening Torque 2.Nm
Dielectric Test Voltage 2.5kV
Energy Limiting Class 3
Vibration 3g
Installation Position Vertical/Horizontal
Bi-connect Terminal Both side
Line & Load Terminal Capacity 25 mm2
Resistance to Shock 40mm free fall
Endurance Mechanical & Electrical Cycles 8000


6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A

*1P = Single Pole

*1P+N = Single Pole & Neutral

*2P = Double Pole

*3P = Three Pole

*3P+N = Three Pole & Neutral

*4P = Four Pole

Miniature Circuit Breakers have precisely formed molded case & cover of flame-retardant high strength thermo-plastic material having high melting point, low water absorption, high dielectric strength and temperature with stand. The Switching Mechanism is independent, manual and trip free, i.e, the breaker trips internally even if the operating knob is held in ON position.

The Contact Mechanism comprises of fixed & moving contacts specially designed for reliability, long life and anti-weld properties. The Arc Extinguishing Device comprises of 12 plates arc chute. The arc under the influence of the magnetic field and arc guide is moved into the arc chute where it is rapidly split and quenched. The tripping mechanism is thermal magnetic type.


The thermal operation provides protection from moderate overload. During a current overload, a thermo-metallic element (bimetallic strip) deflects until it operates a latching mechanism allow the main contacts to open.


In a magnetic operation, large overloads or short circuit current actuates a solenoid causing a plunger to strike the latching mechanism rapidly opening the main contacts.

Type B Characteristics curves

Type C Characteristics curves

This Characteristics is the curves between Release Current and Tripping time.

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