Main contactors


Power contactor, Size S00, AC-3, 5.5 kW/400 V, Auxiliary contact: 1 x NO, Control voltage: 230 V AC 50/60 Hz, Screw connection
Item number: 101307
£30.96
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Main contactor, Construction size S00, AC-3, 3 kW/400 V, Auxiliary contacts: 1 x normally open contact, Control voltage: 230 V AC 50/60 Hz, Spring-loaded connection
Item number: 105609
£23.40
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Surge suppressor, Varistor 127-240 V AC/150-250 V DC, For contactor relays and motor contactors, Size S00
Item number: 101429
£6.66
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Auxiliary switch for main contactors/contactor relays, Size S0, Lateral, 1 x normally closed/normally open contact, Screw connection, R: 31/32; 43/44, L: 51/52; 63/64
Item number: 105686
£10.71
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Surge suppressor, Varistor 127-240 V AC/150-250 V DC, For motor contactors, Size S0
Item number: 101420
£8.10
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Auxiliary switch for power/auxiliary contactors, Size S00, Lateral, 1 x NO/NC, Screw-type terminals, R: 21/22; 33/34, L: 41/42; 53/54
Item number: 104426
£10.71
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SIRIUS 3RA2923-2AA1 wiring kit, For size S0, Incl. mechanical interlocking, Screw fastening
Item number: 104429
£27.90
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Main contactor, Construction size S00, AC-3, 4 kW/400 V, Auxiliary contacts: 1 x normally open contact, Control voltage: 230 V AC 50/60 Hz, Spring-loaded connection
Item number: 105613
£25.11
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Auxiliary switch for main contactors/contactor relays for 3RH2/3RT2, Size S00, Lateral, 1 x normally closed/normally open contact, Spring-loaded connection, R: 21/22; 33/34, L: 41/42; 53/54
Item number: 105889
£10.71
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Power contactor, Size S00, AC-3, 5.5 kW/400 V, Auxiliary contact: 1 x NO, Control voltage: 24 V DC, Screw connection
Item number: 101309
£35.64
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SIRIUS Safety main current connector, connection module for series connection of 2 contactors 3RT201, size S00, actuation: AC/DC, Connection: Screw connection
Item number: 106872
£10.08
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Main contactor, Construction size S00, AC-3, 3 kW/400 V, Auxiliary contacts: 1 x normally closed contact, Control voltage: 230 V AC 50/60 Hz, Spring-loaded connection
Item number: 105610
£23.40
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Main contactor, Construction size S00, AC-3, 3 kW/400 V, Auxiliary contacts: 1 x normally open contact, Control voltage: 24 V DC, Spring-loaded connection
Item number: 105611
£27.45
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Auxiliary switch for power/auxiliary contactors, Size S0, Lateral, 1 x NO/NC, Spring-type terminals, R: 31/32; 43/44, L: 51/52; 63/64
Item number: 104427
£10.71
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Power contactor, Size S00, AC-3, 5.5 kW/400 V, Auxiliary contact: 1 x NC, Control voltage: 24 V DC, Screw connection
Item number: 101310
£35.64
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SIRIUS Safety main current connector, connection module for series connection of 2 contactors 3RT202, size S0, actuation: AC/DC, Connection: Screw connection
Item number: 106873
£10.08
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Power contactor, Size S00, AC-3, 4 kW/400 V, Auxiliary contact: 1 x NC, Control voltage: 24 V DC, Screw connection
Item number: 101306
£29.25
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Main contactor, Construction size S00, AC-3, 5.5 kW/400 V, Auxiliary contacts: 1 x normally open contact, Control voltage: 230 V AC 50/60 Hz, Spring-loaded connection
Item number: 105617
£30.96
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Main contactor, Construction size S00, AC-3, 4 kW/400 V, Auxiliary contacts: 1 x normally closed contact, Control voltage: 24 V DC, Spring-loaded connection
Item number: 105616
£29.25
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Main contactor, Construction size S00, AC-3, 7.5 kW/400 V, Auxiliary contacts: 1 x normally closed contact, Control voltage: 230 V AC 50/60 Hz, Spring-loaded connection
Item number: 105622
£39.24
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Main contactor, Construction size S0, AC-3, 11 kW/400 V, Auxiliary contacts: 1 x normally open/normally closed contact, Control voltage: 230 V AC 50/60 Hz, Spring-loaded connection
Item number: 105627
£57.51
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Power contactor, Size S00, AC-3, 4 kW/400 V, Auxiliary contact: 1 x NO, Control voltage: 24 V DC, Screw connection
Item number: 101304
£29.25
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Power contactor, Size S00, AC-3, 3 kW/400 V, Auxiliary contact 1 x NC, Control voltage: 230 V AC 50/60 Hz, Screw connection
Item number: 101300
£23.40
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Main contactor, Construction size S00, AC-3, 7.5 kW/400 V, Auxiliary contacts: 1 x normally open contact, Control voltage: 230 V AC 50/60 Hz, Spring-loaded connection
Item number: 105621
£39.24
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Main contactor, Construction size S00, AC-3, 4 kW/400 V, Auxiliary contacts: 1 x normally open contact, Control voltage: 24 V DC, Spring-loaded connection
Item number: 105614
£29.25
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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. All types 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

Main contactors, solid-state contactors and solid-state reversing contactors from Siemens are in the product range of Automation24 with an operating power of up to 18.5 kW. All contactors are available in the two sizes S0 and S00 for different control voltages and current intensities. The auxiliary contacts are normally closed and/or normally open.

At Automation24 you find a large selection of main contactors at very favourable prices. Select the main contactor suitable for your application now!