Technical Information

Motor Control Centers

CPE Switchboards offers two styles of MCC's.

  • Both incorporating type testing to AS3439
  • Arc fault containment
  • Temperature rise tests
  • Main Bus Systems rated at 770Amps to 3300Amps with options of parallel Bus Systems to 6000Amps
  • Rating of IP52-54 with optional protective enclosures to IP56
  • Fault levels of 50KA for 1 to 3 seconds, 63KA for 1 second, 80KA for 1 second and 104KA peak current

Our unique qualities of design for Motor Control centres are:

  • Ease of access being a major design feature which allows our equipment to be tested and maintained in situ with only front access necessary
  • All cabling is designed to enter from above or below. All equipment is accessible from the front and cable zones are 300/400mm wide
  • Connections are immediately accessible without the need to dismantle or remove any equipment other than busbar covers
  • Steelwork is of the best design. Main panels, doors and covers are fabricated from 2mm thick steel panels (all zinc seal)
  • Sectional construction allows ease of transport for even the largest installations
  • Re-arrangement of modules can be effected in situ after installation

Busbar Forms and Definitions

Forms of Internal Separations
Symbols: Busbars, including distribution busbars

Form 1
No internal separation

Form 2
Separation of busbars from the functional units

Form 3
Separation of busbars from the functional units +
Separation of functional units from one another +
Separation of terminals from the functional units

Form 4
Separation of busbars from the functional units and terminals +
Separation of functional units from one another +
Separation of terminals associated with a functional unit from those of another functional unit