Jan 22, 2005 · I don't see the difference between a contactor and a relay. Can anybody tell me what the difference is, when to use a relay over a contactor ? What are some criterias that …

Apr 13, 2018 · I came across a contactor catalog saying "Definite purpose". Then tried to figure out the types of contactor. Came across definite purpose and general purpose. What is meant …

Mar 22, 2016 · This discussion focuses on using a relay for controlling a 12V DC motor with a 5V DC circuit. The coil voltage must be 5V, while the switching voltage for the motor is 12V. The …

Nov 16, 2013 · I am confused about dry contact. Does it mean dry contact vs wet contact as in mercury switch vs regular relay. Any circuit examples. Are transistor switches also referred to …

Apr 7, 2019 · The discussion centers on determining the appropriate overload relay values F1 and F2 in a star-delta motor starting configuration. It is established that F1 and F2 should be set to …

Dec 4, 2007 · Relay chattering is primarily caused by insufficient power supply to the relay coil or oscillations in the coil signal. In specific cases, such as with A/C units, pressure fluctuations …

Aug 22, 2016 · A pilot duty rating is a contact rating intended for contacts that control the coil of another relay or contactor. These ratings are applicable when controlling loads like relay coils, …

Jun 8, 2020 · The discussion centers on arcing in electrical relay contacts, particularly how it varies with different load types. Inductive loads produce significantly greater arcing compared …

Oct 12, 2022 · The push buttons operate a reversing contactor which, via the up/down limit switch, swaps one of the motor's phases to effect forward and reverse modes. I have …

Nov 27, 2008 · This discussion focuses on preventing arcing across relay contacts when switching an inductive load, specifically a DC motor with a continuous current of 20 A and …