Product Description

The three-phase AC electromagnetic contactor is an electrical switch device specially used to control the three-phase power circuit. It connects or disconnects the circuit through the action of the electromagnet, and is mainly used to control the start, stop and reversal of the three-phase motor. The working principle of the contactor is that when the control circuit is energized, the electromagnet generates a magnetic field, attracting the moving contact to contact the static contact, thereby closing the circuit; when the control circuit is de-energized, the spring resets the moving contact and disconnects the circuit.

Three-phase AC electromagnetic contactors are widely used in industrial automation, mechanical equipment, power systems and other fields. They can effectively control the operation of motors and other electrical equipment to ensure the safe and efficient operation of the equipment. They play an important role in production lines, pump stations, fans, compressors and other occasions, and can achieve remote control and automatic operation to improve production efficiency.

Due to its advantages of simple structure, convenient operation and high reliability, the three-phase AC electromagnetic contactor has become an indispensable and important part of modern electrical control systems. Its superior performance enables it to work stably in harsh environments such as high temperature and high humidity, meeting the needs of various industrial and commercial applications.

A three-phase AC electromagnetic contactor usually consists of the following main parts:

1. Electromagnet: When the control circuit is turned on, the electromagnet generates a magnetic field, attracting the moving contact, making it contact with the static contact, thereby closing the circuit.
2. Contact: includes main contacts and auxiliary contacts. The main contacts are used to control the on and off of the main circuit, while the auxiliary contacts are used to realize other control functions, such as indicator lights, interlocks, etc.
3. Spring: Used to automatically reset the moving contact and cut off the circuit after the electromagnet is powered off.
4. Housing: Protects internal components and prevents the external environment from affecting the contactor.

SPX Household AC Modular Contactor Parameter

Frame(A)			SS-N12
KW/HP(AC-3) Reted power(AC-3) IEC60947-4		220V	3.5/4.5
		380V	5.5/7.5
Reted current(AC-3) GB14048.4		220V	13
		380V	12
Reted heating current(A)			20
Reted insutaled voltage(V)			660
Auxicary contact AC-15	Contact	Standard	1NO+1NC
	Reted current (A)	220V	1.6
		380V	0.95
Electric life			100
Machanical life			1000
Outline and installation dimension
			Type	L	W	H	C1	C2	ΦD
			SS-N12	53	78	78	50	40	4.5