Magnetic Motor Starter for Compressor

The SPX durable Magnetic Motor Starter for Compressor is the heart of industrial gas sources and refrigeration cycles, and every start of its motor is accompanied by a huge inertial load and current shock. Universal starters often face the risk of shortened lifespan and protection failure under harsh operating conditions. Our compressor specific magnetic motor starter is designed to solve this core pain point in engineering applications. It deeply integrates control and protection functions, and comprehensively strengthens the load characteristics of the compressor, converting every start stop into stable and controlled power output, making it a "professional monitor" to ensure the continuous and healthy operation of the compressor.

Advantage Master

The contacts are made of specially made silver alloy material, which has extremely high resistance to welding and conductivity. It is designed to withstand transient surges of 6-8 times the rated current when the compressor is started.
The coil and iron core have been optimized to generate sufficient magnetic force even under voltage fluctuations in the power grid, driving the dynamic iron core to quickly and strongly engage, reducing contact vibration and arc erosion during the start-up process.
The Magnetic Motor Starter for Compressor adopts a reinforced arc extinguishing chamber and optimized air duct design, which can quickly dissipate heat and extinguish arcs under frequent operation, maintain stable electrical performance, and extend contact life.

Application

Control of scroll and screw compressors in commercial refrigeration units, chillers, and heat pump systems.
The electronic control part of the diesel driven air compressor used in engineering is resistant to vibration and temperature changes.
In the process flow, Magnetic Motor Starter for Compressor is used as a compressor for conveying process gases, requiring high control accuracy and reliable protection.

SPX Magnetic Motor Starter Parameter

Frame(A)			SMS-T10/12	SMS-T20	SMS-T21	SMS-T25		SMS-T35
KWIHP(AC-3)Reted power(AC-3)EC60947-4		220V	2.2/3	4/5.5	4/5.5	5.5/7.5		7.5/10
		380V	2.7/3.5	7.5/10	7.5/10	7.5/10		15/20
Reted current(AC-3)GB14048.4		220V	11/13	20	20	26		35
		380V	7/9	20	20	25		32
Reted heating current(A)			20	32		50		60
Reted insutaled voltage(V)			660
Auxicary contactAC-15	Contact	Standard	1NO	1NO+1NC	2NO+2NC
	Reted current(A)	220V	1.6
		380V	0.95
Electric rating			IP30
Machanical life			1000		500
Outline and installation dimension
			Type	L	W	H1	H2		C1	C2
			S3-20/21	106	170	110	115		140	76.0
			S3-25/35	136	225	110	130		165	95

SPX Magnetic Motor Starter S3-T25 Details

*Inner

*Series