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MCB type C sering digunakan termasuk juga untuk projek-projek JKR. Apakah perbezaan di antara MCB Type B, C dan D?

Beban apakah yang sesuai digunakan untuk setiap type bagi MCB tersebut?
in LV (Low Voltage) 340 points 2 6

1 Answer

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Perbezaannya adalah seperti berikut:

Type B - trips between 3 and 5 time full load current

Type C - trips between 5 and 10 times full load current

Type D - trips between 10 and 20 times full load current

Beban yang sesuai digunakan adalah seperti berikut:

Type B 

This type of MCB is used for purely resistive loads, or loads with a very small inductive component.

  • Lighting circuits (non-inductive)
  • General purpose outlets

Type C 

This type of MCB is used for loads with a moderate inductive component, typically electrical equipment which uses low-HP motors or specific types of lighting:

  • Air conditioners
  • Residential / Commercial Pumps
  • Fans
  • Lighting which uses ballasts with an inductive component

Type D 

This type of MCB is used for loads with a very high inductive component:

  • Large induction motors or transformers
  • X-ray equipment
  • Welding equipment

Projek JKR tidak menggunakan Type B kerana sukar didapati di pasaran. Kebanyakkan menggunakan Type C. Type D digunakan untuk kes-kes tertentu seperti motor yang besar atau pun transformer.

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