Course NumberEE-03-952
PDH Hours3
Low Voltage Switchgear

Low Voltage Switchgear

Author: Velimir Lackovic

Arc Low-voltage switchgear generally refers to metal-enclosed or metal-clad low-voltage power circuit breaker switchgear that is rated for 600V alternating current (AC) and below. The metal-enclosed switchgear is completely enclosed on all sides and the top with metal sheets, has stationary primary power circuit switching or interrupting elements, or both, with buses and connections. The metal-clad low-voltage switchgear has removable circuit breakers which are housed in individual earthed metal compartments. There are two basic low-voltage switchgear types: indoor and outdoor types. Indoor switchgear consists of a front section containing circuit breakers, meters, protection relays and controls, bus section, and cable entrance section. The outdoor section is similar to the indoor switchgear except it is fitted with a weather-proof enclosure. Low-voltage switchgear takes on many specific forms and functions that combine metering, monitoring, control, protection, and distribution. Original equipment manufacturers (OEMs) now provide a wide variety of low-voltage switchgear arrangements, some of them very custom, to meet the user’s requirements.

This course is suitable for engineers interested in learning the fundamentals of low voltage switchgear technology. It covers definitions of MCCBs, insulated case circuit breakers, power circuit breakers and fused power circuit breakers. Different monitoring and protection packages are also addressed. Upon successful completion engineers will have solid understanding of the low voltage switchgear technology, overcurrent protection mechanism, selection and application of the low voltage equipment, assessment of low voltage breakers.

Once you complete your course review, you need to take a multiple-choice quiz consisting of fifteen (15) questions to earn 3 PDH credits.

Learning Objectives

This course is intended to provide you with the following specific knowledge and skills:

  • MCCBs
  • Insulated case circuit breakers
  • Power circuit breakers
  • Fused power circuit breakers
  • Overcurrent protective devices / Monitoring and Protection Packages
  • Selection and application of the low voltage equipment
  • Assessing Service Life of Low-Voltage Breakers
  • Endurance Requirements for Low-Voltage Breakers

Download the Course to review and begin earning your PDH credits.

We provide technical courses for PDH credits that meet Board requirements for Professional Engineers, Geologists and Land Surveyors. This courses is guaranteed to be accepted in AK, AL, AR, FL, GA, IA, IL, ID, IN, KS, KY, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, SC, SD, TN, TX, UT, VA, VT, WI, WV, and WY. Before purchasing this course, please confirm that your state Board is listed above.

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