2. CONTACTOR is a spring actuated mechanism having a set of double-breaking power contacts. It also have a set of auxiliary contacts, generally 2 NO & 2NC, which are used for control wiring.
6. Mini Circuit Breaker It is used for protecting the circuit against overload and short circuit. It can be used in lighting and electric motor distribution system.
7. It is used to control electric energy in distribution network and is having overload and short circuit protection MCCB
8. Residual Current Circuit Breakers to open a circuit automatically in the case of an earth leakage fault between phase and earth and/or neutral greater than a set current generally 300mA. It is used in domestic, commercial and industrial installations.
15. Direct On Line Starter DOL magnetic starter is mainly used for controlling motors up to 7.5 HP .It also has an OVER LOAD RELAY for protecting the motor against overloading.
20. Motor control centre An MCC is a large enclosure designed to house standard motor control equipment. The unique characteristic of an MCC is that the motor controls are contained in plug-in units. Ability to Plug In control components can plug in and unplug instead of having to wire each device. For example : a combination starter can be plugged into a motor control center just like you would plug in a household device such as a lamp. However, in an MCC, the user can feed much larger loads. Note that industrial motors operate on three phase power, unlike a typical household device; this is why MCC units have three power stabs plus a fourth stab to provide a means for grounding.
