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Main contactors

Main contactor, Size MC-22b, AC-3, 15 HP/480 V, Auxiliary contact 1 x NO+ 1 x NC, Control voltage: 24 V DC, Screw connection
Item number: 403884
-20 % MSRP: $75.91
$60.73
plus sales tax plus shipping
in stock
Shipping today
Main contactor, Nema size 2, AC-3, 30 HP/480 V, Auxiliary contact 2 x NO+ 2 x NC, Control voltage: 24 V DC, Screw connection
Item number: 403886
-20 % MSRP: $114.87
$91.90
plus sales tax plus shipping
in stock
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Main contactor, Nema size 2, AC-3, 30 HP/480 V, Auxiliary contact 2 x NO+ 2 x NC, Control voltage: 120 V AC, Screw connection
Item number: 403880
-20 % MSRP: $92.52
$74.02
plus sales tax plus shipping
in stock
Shipping today
Power contactor, Size S00, AC-3, 7.5 HP/480 V, Auxiliary contact: 1 x NO, Control voltage: 24 V DC, Screw connection
Item number: 101309
MSRP: $190.00
$94.05
plus sales tax plus shipping
in stock
Shipping today
Power contactor, Size S00, AC-3, 10 HP/480 V, Auxiliary contact: 1 x NO, Control voltage: 24 V DC, Screw connection
Item number: 101313
MSRP: $336.00
$166.32
plus sales tax plus shipping
in stock
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Power contactor, Size S00, AC-3, 3 HP/480 V, Auxiliary contact 1 x NC, Control voltage: 24 V DC, Screw connection
Item number: 101302
MSRP: $146.50
$72.52
plus sales tax plus shipping
in stock
Shipping today
Main contactor, Nema size 1P, AC-3, 20 HP/480 V, Auxiliary contact 2 x NO+ 2 x NC, Control voltage: 24 V DC, Screw connection
Item number: 403885
-20 % MSRP: $101.22
$80.98
plus sales tax plus shipping
in stock
Shipping today
Main contactor, Nema size 1P, AC-3, 20 HP/480 V, Auxiliary contact 2 x NO+ 2 x NC, Control voltage: 120 V AC, Screw connection
Item number: 403879
-20 % MSRP: $69.37
$55.50
plus sales tax plus shipping
in stock
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Power contactor, Size S0, AC-3, 25 HP/480 V, Auxiliary contact: 1 x NO+ 1 x NC, Control voltage: 24 V DC, Screw connection
Item number: 101322
MSRP: $642.00
$327.42
plus sales tax plus shipping
in stock
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Power contactor, Size S00, AC-3, 7.5 HP/480 V, Auxiliary contact: 1 x NO, Control Voltage: 120 V AC 60Hz, Screw connection
Item number: 401036
MSRP: $165.00
$82.50
plus sales tax plus shipping
in stock
Shipping today
Power contactor, Size S00, AC-3, 3 HP/480 V, Auxiliary contact: 1 x NO, Control voltage: 120 VAC, Screw connection
Item number: 401040
MSRP: $124.50
$62.25
plus sales tax plus shipping
in stock
Shipping today
Power contactor, Size S00, AC-3, 5 HP/480 V, Auxiliary contact: 1 x NO, Control voltage: 24 V DC, Screw connection
Item number: 101304
MSRP: $156.00
$77.22
plus sales tax plus shipping
in stock
Shipping today
Main contactor, Nema size 1, AC-3, 10 HP/480 V, Auxiliary contact 1 x NO+ 1 x NC, Control voltage: 24 V DC, Screw connection
Item number: 403883
-20 % MSRP: $68.93
$55.14
plus sales tax plus shipping
in stock
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Main contactor, Size S0, AC-3, 20 HP/480 V, Auxiliary contact: 1 x NO+ 1 x NC, Control voltage: 120 V AC, Screw connection
Item number: 403408
MSRP: $392.00
$352.80
plus sales tax plus shipping
in stock
Shipping today
Main contactor, Size S00, AC-3, 5 HP/480 V, Auxiliary contact: NO, Control voltage: 120 V AC, NEMA version, Screw connection
Item number: 403406
MSRP: $237.00
$213.30
plus sales tax plus shipping
in stock
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Power contactor, Size S00, AC-3, 5 HP/480 V, Auxiliary contact: 1 x NO, Control Voltage: 120 VAC 60Hz, Screw connection
Item number: 401037
MSRP: $134.00
$67.00
plus sales tax plus shipping
in stock
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Main contactor, Nema size 00, AC-3, 7.5 HP/480 V, Auxiliary contact 1 x NO+ 1 x NC, Control voltage: 24 V DC, Screw connection
Item number: 403882
-20 % MSRP: $50.61
$40.49
plus sales tax plus shipping
in stock
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Power contactor, Size S00, AC-3, 5 HP/480 V, Auxiliary contact: 1 x NO, Control voltage: 24 V AC, Screw connection
Item number: 402770
MSRP: $134.00
$67.00
plus sales tax plus shipping
in stock
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Main contactor, Nema size 1, AC-3, 10 HP/480 V, Auxiliary contact 1 x NO+ 1 x NC, Control voltage: 120 V AC, Screw connection
Item number: 403877
-20 % MSRP: $39.71
$31.77
plus sales tax plus shipping
in stock
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Main contactor, Nema size 00, AC-3, 7.5 HP/480 V, Auxiliary contact 1 x NO+ 1 x NC, Control voltage: 120 V AC, Screw connection
Item number: 403876
-20 % MSRP: $30.84
$24.67
plus sales tax plus shipping
in stock
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Main contactor, Size S0, AC-3, 10 HP/480 V, Auxiliary contact: 1 x NO+ 1 x NC, Control voltage: 120 V AC, NEMA version, Screw connection
Item number: 403407
MSRP: $468.00
$421.20
plus sales tax plus shipping
in stock
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Main contactor, Nema size 00, AC-3, 5 HP/480 V, Auxiliary contact 1 x NO+ 1 x NC, Control voltage: 120 V AC, Screw connection
Item number: 403875
-20 % MSRP: $28.13
$22.50
plus sales tax plus shipping
in stock
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Power contactor, Size S00, AC-3, 3 HP/480 V, Auxiliary contact 1 x NO, Control voltage: 24 V DC, Screw connection
Item number: 101301
MSRP: $146.50
$72.52
plus sales tax plus shipping
few in stock
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Power contactor, Size S0, AC-3, 15 HP/480 V, Auxiliary contact: 1 x NO+ 1 x NC, Control voltage: 120 V AC, Screw connection
Item number: 401032
MSRP: $270.00
$137.70
plus sales tax plus shipping
currently out of stock
Est. mfr. lead time 5 days
Order now or activate the availability alert or request a date of delivery toll free at 800-250-6772.
Due to supply chain shortages, many manufacturers are exceeding standard lead times.
Availability alert
Power contactor, Size S0, AC-3, 15 HP/480 V, Auxiliary contact: 1 x NO+ 1 x NC, Control voltage: 24 V DC, Screw connection
Item number: 101318
MSRP: $432.00
$220.32
plus sales tax plus shipping
currently out of stock
Est. mfr. lead time 5 days
Order now or activate the availability alert or request a date of delivery toll free at 800-250-6772.
Due to supply chain shortages, many manufacturers are exceeding standard lead times.
Availability alert

Main contactors

Main contactors are mechanical contactors with a high switching capacity that are used for controlling motors. Solid state contactors, however, work with faster switching times and avoid possible wear because they operate electronically and not mechanically. Solid-state reversing contactors are suited to reverse the direction of three-phase current motors. A variety of main contactors are available with AC and DC control voltage. The three-phase contactors are equipped with auxiliary contacts to return the signals to the controller.

Applications of main contactors in industry

Main contactors are typically used in automation and control technology. Examples are:

  • Control of motors and installations
  • Switching on electrical heating systems

 

Main contactors in the portfolio of Automation24

At Automation24 we offer quality contactors and main contactors from Siemensand LS ELECTRIC with an operating power of up to 30 HP. Automation24 offers NEMA style contactors in different sizes for different control voltages and current intensities. The auxiliary contacts are normally closed and/or normally open.  If you need a contactor for an application with 24 V DC control voltage, take a look at Siemens SIRIUS 3RT20151BB41 with a 3 HP power rating.  If you are looking for something with 120 V AC control voltage, take a look at LS ELECTRIC MC18B-30-11-K7-S-E - 1346000500 with a 10 HP power rating.

At Automation24 you can find a large selection of main contactors at excellent prices. Select the perfect main contactor for your application now!