Electrical devices.MCB,ELCB,MCCB ETC.....

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Electrical devices.MCB,ELCB,MCCB ETC.....

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Electrical devices.MCB,ELCB,MCCB ETC.....

  1. 1. Terminal Connector 11/06/13 1
  2. 2. CONTACTOR Contactor is a spring actuated mechanism having a set of double-breaking power contacts. It also have a set of auxiliary contacts, generally 2 NO & 2NC, which are used for control wiring. 11/06/13 2
  3. 3. Distribution Box . 1 Phase 4 Lines 11/06/13 1 Phase 8 Lines 3 Phase 12 Lines 3 Phase 24 Lines 3
  4. 4. Earth Leakage Circuit Breakers 11/06/13 4
  5. 5. ELCB is used for the protection against electrical leakage in the circuit. When somebody gets an electric shock or the residual current of the circuit exceeds the fixed value, ELCB cuts off the power within the time of 0.1s automatically protecting the personal safety and preventing the equipment from the fault. ELCB also protect the circuit against over load and short-circuit. 11/06/13 5
  6. 6. Mini Circuit Breaker It is used for protecting the circuit against overload and short circuit. It can be used in lighting and electric motor distribution ystem. 11/06/13 6
  7. 7. Moulded Case Circuit Breaker It is used to control electric energy in distribution network and is having overload and short circuit protection 11/06/13 7
  8. 8. Residual Current Circuit Breakers to open a circuit automatically in the case of an earth leakage fault between phase and earth and/or neutral greater than a set current generally 300mA. It is used in domestic, commercial and industrial installations . 11/06/13 8
  9. 9. Screw Circuit Breaker 11/06/13 9
  10. 10. Mirco Switch 11/06/13 10
  11. 11. General Relay Suitable for DC or AC circuit switching in various automation devices, process control and communication equipments 11/06/13 11
  12. 12. The plug-in base of the relay is used with standard 8 and 11 pins socket 11/06/13 12
  13. 13. SOLID STATE RELAY 11/06/13 13
  14. 14. Isolating Switches 11/06/13 14
  15. 15. Direct On Line Starter DOL magnetic starter is mainly used for controlling motors up to 7.5 HP .It also has an OVER LOAD RELAY for protecting the motor against overloading. 11/06/13 15
  16. 16. STAR-DELTA STARTER 11/06/13 16
  17. 17. STAR – DELTA STARTER 1. 2. 3. 4. 5. 6. STAR-DELTA STARTER IS GENERALLY USED FOR CONTROLLING MOTORS ABOVE 7.5 HP AND CONSISTS OF FOLLOWINGS: ONE MAIN CONTACTOR ONE STAR CONTACTOR ONE DELTA CONTACTOR ONE ON-DELAY TIMER ONE OVERLAOD RELAY SET OF AUXILLARY CONTROL CONTACTS 11/06/13 17
  18. 18. STAR-DELTA STARTER power wiring diagram 11/06/13 18
  19. 19. THERMAL OVER LOAD RELAY 11/06/13 19

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