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Miniature Circuit Breakers (MCB)

image/jpeg iconpro-1.jpg
  • To protect conductors against overloads and short circuits current in the electrical distribution system.
  • Designed for use by unskilled person.
  • Suitable for use in eletrical system with rated voltage up to 440V AC, frequency 50/60Hz.
  • Use in domestic, commercial and industrial installations.

Selection for suitable triping curve

Choose the appropriate tripping curve for proper installation and better protection.

B curve

  1. Instantaneous tripping: 5ln
  2. Instantaneous non-tripping: 3ln [3ln ≤ 0.1s < 5ln]
  3. Application: provide protection for circuits with low inductive load.

C curve

  1. Instantaneous tripping: 10ln
  2. Instantaneous non-tripping: 5ln [5ln ≤ 0.1s < 10ln]
  3. Application: provide protection for circuits with inductive load or highly inductive lighting fittings.

D curve

  1. Instantaneous tripping: 20ln
  2. Instantaneous non-tripping: 10ln [10ln ≤ 0.1s < 20ln]
  3. Application : provide protection for circuits with high inductive load or electrical system / equipment with high surge current.

Overcurrent Protection Characteristics

Colours of toggles

Colours of toggles indicate amperage rating of MCBs :

< 2 Ampere
RAL 9005
(Black)

2 Ampere
RAL 3015
(Pink)

4 Ampere
RAL 8004
(Brown)

6 Ampere
RAL 6024
(Green)

10 Ampere
RAL 2002
(Red)

16 Ampere
RAL 7035
(Grey)

20 Ampere
RAL 5010
(Blue)

25 Ampere
RAL 1023
(Yellow)

32 Ampere
RAL 4007
(Violet)

40 Ampere
RAL 9005
(Black)

50 Ampere
RAL 9003
(White)

63 Ampere
RAL 3014
(Copper-colored)

 

application/pdf icon01-MCB_General_Description.pdf
Source URL: http://maxguard.com.my/product/miniature-circuit-breakers-mcb-0