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Rated Current (A)

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Rated Residual Current (mA)

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No. of Poles

No. of Way

No. of Phases

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L&T Switchgear Tripper MCCB 10kA

1,84010,500 inc. GST
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L&T Switchgear Tripper 16A 3 Pole MCCB 10kA DY125U EM90983OOBO

1,840 inc. GST
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L&T Switchgear Tripper 20A 3 Pole MCCB 10kA DY125U EM90983OOCO

1,840 inc. GST
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L&T Switchgear Tripper 25A 3 Pole MCCB 10kA DY125U EM90983OODO

1,840 inc. GST
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L&T Switchgear Tripper 32A 3 Pole MCCB 10kA DY125U EM90983OOEO

1,840 inc. GST
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L&T Switchgear Tripper 40A 3 Pole MCCB 10kA DY125U EM90983OOFO

1,840 inc. GST
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L&T Switchgear Tripper 50A 3 Pole MCCB 10kA DY125U EM90983OOGO

1,840 inc. GST
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L&T Switchgear Tripper 63A 3 Pole MCCB 10kA DY125U EM90983OOHO

1,840 inc. GST
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L&T Switchgear Tripper 80A 3 Pole MCCB 10kA with spreader DY125U EM90983OOJO

1,978 inc. GST
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L&T Switchgear Tripper 100A 3 Pole MCCB 10kA with spreader DY125U EM90983OOKO

1,978 inc. GST
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L&T Switchgear Tripper 125A 3 Pole MCCB 10kA with spreader DY125U EM90983OOLO

2,926 inc. GST
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L&T Switchgear Tripper 16A 4 Pole MCCB 10kA DY125U EM90984OOBO

2,447 inc. GST
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L&T Switchgear Tripper 20A 4 Pole MCCB 10kA DY125U EM90984OOCO

2,447 inc. GST
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L&T Switchgear Tripper 25A 4 Pole MCCB 10kA DY125U EM90984OODO

2,447 inc. GST
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L&T Switchgear Tripper 32A 4 Pole MCCB 10kA DY125U EM90984OOEO

2,447 inc. GST
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L&T Switchgear Tripper 40A 4 Pole MCCB 10kA DY125U EM90984OOFO

2,447 inc. GST
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L&T Switchgear Tripper 50A 4 Pole MCCB 10kA DY125U EM90984OOGO

2,447 inc. GST
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L&T Switchgear Tripper 63A 4 Pole MCCB 10kA DY125U EM90984OOHO

2,447 inc. GST
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L&T Switchgear Tripper 80A 4 Pole MCCB 10kA with spreader DY125U EM90984OOJO

2,751 inc. GST
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L&T Switchgear Tripper 100A 4 Pole MCCB 10kA with spreader DY125U EM90984OOKO

2,751 inc. GST
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L&T Switchgear Tripper 125A 4 Pole MCCB 10kA with spreader DY125U EM90984OOLO

3,643 inc. GST
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L&T Switchgear Tripper 160A 3 Pole MCCB 10kA DY250U1 CM98195OOMO

4,370 inc. GST
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L&T Switchgear Tripper 200A 3 Pole MCCB 10kA DY250U1 CM98195OONO

5,620 inc. GST
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L&T Switchgear Tripper 250A 3 Pole MCCB 10kA DY250U1 CM98195OOPO

8,300 inc. GST
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L&T Switchgear Tripper 160A 4 Pole MCCB 10kA DY250U1 CM98196OOMO

6,760 inc. GST
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L&T Switchgear Tripper 200A 4 Pole MCCB 10kA DY250U1 CM98196OONO

7,180 inc. GST
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L&T Switchgear Tripper 250A 4 Pole MCCB 10kA DY250U1 CM98196OOPO

10,500 inc. GST
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Legrand DPX3 MCCB 25kA

4,21417,187 inc. GST
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Legrand 63A 3 Pole MCCB 25kA DPX3 160 4200 43

4,214 inc. GST
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Legrand 80A 3 Pole MCCB 25kA DPX3 160 4200 44

4,214 inc. GST
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Legrand 100A 3 Pole MCCB 25kA DPX3 160 4200 45

4,214 inc. GST
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Legrand 125A 3 Pole MCCB 25kA DPX3 160 4200 46

6,098 inc. GST
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Legrand 160A 3 Pole MCCB 25kA DPX3 160 4200 47

8,153 inc. GST
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Legrand 63A 4 Pole MCCB 25kA DPX3 160 4200 53

5,858 inc. GST
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Legrand 80A 4 Pole MCCB 25kA DPX3 160 4200 54

5,858 inc. GST
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Legrand 100A 4 Pole MCCB 25kA DPX3 160 4200 55

5,858 inc. GST
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MOULDED CASE CIRCUIT BREAKER

 MCCB or Moulded Case Circuit Breaker is a type of circuit breaker which is used to stop the excessive flow of current on load by breaking the circuit. It protects the system or the circuit from over-current. It is mainly used for industrial and commercial purpose.

By commercial it is meant by the main distribution supply of buildings and industrial means in large machineries at plants. It has a rating of 1000 Ampere and it has a breaking capacity of 10kA- 100kA. MCCB’s have a built-in alarm contact system, whenever there’s excess current on the load or a short circuit MCCB trips and breaks the circuit and also sounds an alarm to let everyone know.

OPERATING PRINCIPLE:

MCCB’s are used for over current protection. There are various types of working features in a MCCB:

  • Magnetic trip function: whenever there’s a short circuit in the system/motor/transformer, this trip function works. Because there’s a current transformer connected in the MCCB which triggers the break-to-contact to ‘off’ position due to magnetization resulted from over current.
  •  Thermal trip function: There’s a bimetallic plate attached within the MCCB which bends due to heat resulted from over current. These bending triggers the break-to-contact to ‘off’ position.
  • Under voltage trip function: All the 3-phase motors work on 415 volts. If for some reason lesser voltage is permeated then this trip function triggers to save the motors from damage.
  • Under and over frequency trip function: In India, we use 50 Hz line, there are machines which can run under/over that frequency and there are machines which can’t. So, these MCCB’s triggers when there is any discrepancy in frequency.
  • Current unbalanced trip function: When there’s any short circuit in the system or a sudden increase of load in the system, this trip function triggers.
  • Power factor trip function: When the power factor drops or increase from the set value of the MCCB, this trip function triggers.
  • Shut trip function:  There’s an emergency switch which exists for the sole purpose of trigger the MCCB manually due to any reason.

    TYPES OF MCCB:

    As per pole: There are 3 types of MCCB

  • Two pole: Only phase and neutral is used
  • Three pole: Three lines, RYB is used and neutral is direct
  • Four pole: RYB with neutral as a TPN(three pole+ neutral) is used.

As per class, There are 5 types of MCCB:

  • Type B: It has a tripping current capacity of 3 to 5 times of load current and operating response of minimum 0.04 sec to maximum of 13 sec. It is very much usable for domestic purpose for its resistive load application and comparatively lower surge of current.
  • Type C: It has a tripping current capacity is 5 to 10 times of load current and operating response of minimum of 0.04 sec to maximum of 5 sec. It is suitable for commercial as well as industrial purpose for its inductive load application and moderate surge of current.
  • Type D: It has a tripping current capacity is 10 to 20 times of load current and response time of 0.04 sec to 3 sec which makes it suitable for forms of motors or large vending motors. It has an inductive load capacity for the purpose of commercial and industrial application.
  • Type K and Z: It has a tripping current capacity of 2 to 3 times of load current with an operating response of minimum of 0.04 sec to maximum of 5 sec. These types are highly susceptible to short circuits and they are used for making highly sensitive semiconductor devices like medical devices. They have very low surge current level. Various rating of MCCB’s are available in the market like 100, 125, 150, 200, 250, 400, 630, 800, 1000, 1250, 1600 Amp. Out of these only 100, 125, 250, 400, 630 and 800 are more widely used.

REASONS TO USE MCCB:

  • MCCB is used instead of MCB.

  • It is used for high voltage and current.

  • In MCCB we can adjust the ampere rating through the adjustable switch.

  • There’s a reset and test button available for MCCB for testing purpose.

  • It is used in main panel for distribution of L.T. supply.
  • It’s used for protection of sub-load.
  • Easy repair and low costings.

    AVAILABILITY OF MCCB IN THE MARKET

    The use of MCCB is usually done in case of commercial or official or industries. Households do not require so much voltage so it is mostly suitable for office uses. Since it is widely used by the industries the market is always stocked up with MCCB fuse. You can always find MCCB’s in the market.

    The shop owners can also help you with repairing or providing professional helper for any need. MCCB configurations are not very complex so anyone who can a concept about electronic or fuse applications can very well fix it by themselves.

TOP BRANDS FOR BUYING MCCB:

Click here to buy Siemens products.

Click here to buy Switchgear products.

Click here to buy Schneider products.

Click here to buy Legrand products.