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AC contactor for pump application. A contactor is an electrically controlled switch used for switching an electrical power circuit. [1] A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch.
NEMA (National Electrical Manufacturers Association) contactors and motor starters are rated by sizes. These sizes are grouped by rated current and power. [1] [2]
Digital Soft Starter. Whenever the armature of an electric motor is moving, both the motor action and generator action are occurring simultaneously; the electromagnetic force produced by generator action opposes the desired motor action and effectively creates a variable motor resistance which increases with motor speed.
Volume 4-2: Contactors and motor starters - Semiconductor motor controllers and starters for a.c. voltage Volume 5-1: Control apparatus and switching elements - Electromechanical control apparatus[1] Volume 6-1: Multi-function switchgear and controlgear - Mains switches (categories AC-32A/B)
A magnetic starter has a contactor and an overload relay, which will open the control voltage to the starter coil if it detects an overload on a motor. [1] [2] The overload relay opens a set of contacts that are wired in series with the supply to the contactor feeding the motor. The characteristics of the heaters can be matched to the motor so ...
The man's body was found in the Fazeley Canal in Erdington, Birmingham, at about 08:00 GMT on 4 November 2010. Despite extensive inquiries, he was never identified and West Midlands Police said it ...
European Union privacy watchdogs hit Facebook owner Meta with fines totaling 251 million euros on Monday after an investigation into a 2018 data breach on the social media platform that exposed ...
Jose Melo, 52, is facing a murder charge after Naket Jadix Trinidad Maldonado, 31, was found dead on Monday, Dec. 30, 2024
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