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Variable speed Drives, AC and DC Motors — Ex-Ed can supply you with a full range of control systems, installation options and services.

Siemens Sirius 3RT2, 24VDC Control Contactors

Siemens Sirius 3RT2, 24VDC Control Ancillary Components

3Pole, Screw terminals

Online Price from £18

Siemens Sirius 3RT2 contactors are climate proof, and finger safe according to DIN EN 50274.

Sirius 3RT2 contactors Size S00 have an auxillary contact integrated into the basic unit.  Size S0 have 2 auxillary contacts 1 NO + 1 NC (versions are available with 2 NO +2 NC).

3RT2 contactors can be extended with a range of auxillary blocks mounted on the front or attached laterally on the left or the right.

3RT2 contactors shown on this page have screw terminals and a coil control voltage of 24V DC. 

Spring type terminals or ring terminal lug connections are available along with a wide range of AC and DC coil operating voltages.

For alternative terminal arrangements or coil voltage, please contact Ex-Ed Drives and Controls.

Siemens Sirius 3RT2015-1BB41

Code: Sirius 3RT2015-1BB41
Notes: 1 NO Auxillary contact. Screw connections.
Rated Power at AC-3 / 400V: 3 kW
Operating Current at AC-3 / 400V: 7 A
Operating Current at AC-1 / 400V: 18 A
Size: S00
Coil Voltage DC: 24 V
Quantity: 1

£18.00 + VAT

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Siemens Sirius 3RT2015-1BB42

Code: Sirius 3RT2015-1BB42
Notes: 1 NC Auxillary contact. Screw connections.
Rated Power at AC-3 / 400V: 3 kW
Operating Current at AC-3 / 400V: 7 A
Operating Current at AC-1 / 400V: 18 A
Size: S00
Coil Voltage DC: 24 V
Quantity: 1

£18.00 + VAT

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Siemens Sirius 3RT2016-1BB41

Code: Sirius 3RT2016-1BB41
Notes: 1 NO Auxillary contact. Screw connections.
Rated Power at AC-3 / 400V: 4 kW
Operating Current at AC-3 / 400V: 9 A
Operating Current at AC-1 / 400V: 22 A
Size: S00
Coil Voltage DC: 24 V
Quantity: 1

£19.00 + VAT

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Siemens Sirius 3RT2016-1BB42

Code: Sirius 3RT2016-1BB42
Notes: 1 NC Auxillary contact. Screw connections.
Rated Power at AC-3 / 400V: 4 kW
Operating Current at AC-3 / 400V: 9 A
Operating Current at AC-1 / 400V: 22 A
Size: S00
Coil Voltage DC: 24 V
Quantity: 1

£19.00 + VAT

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Siemens Sirius 3RT2023-1BB40

Code: Sirius 3RT2023-1BB40
Notes: 1 NO and 1 NC Auxillary contact. Screw connections
Rated Power at AC-3 / 400V: 4 kW
Operating Current at AC-3 / 400V: 9 A
Operating Current at AC-1 / 400V: 40 A
Size: S0
Coil Voltage DC: 24 V
Quantity: 1

£21.00 + VAT

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Siemens Sirius 3RT2017-1BB41

Code: Sirius 3RT2017-1BB41
Notes: 1 NO Auxillary contact. Screw connections.
Rated Power at AC-3 / 400V: 5.5 kW
Operating Current at AC-3 / 400V: 12 A
Operating Current at AC-1 / 400V: 22 A
Size: S00
Coil Voltage DC: 24 V
Quantity: 1

£24.00 + VAT

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Siemens Sirius 3RT2017-1BB42

Code: Sirius 3RT2017-1BB42
Notes: 1 NC Auxillary contact. Screw connections.
Rated Power at AC-3 / 400V: 5.5 kW
Operating Current at AC-3 / 400V: 12 A
Operating Current at AC-1 / 400V: 22 A
Size: S00
Coil Voltage DC: 24 V
Quantity: 1

£24.00 + VAT

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Siemens Sirius 3RT2018-1BB42

Code: Sirius 3RT2018-1BB42
Notes: 1 NC Auxillary contact. Screw connections.
Rated Power at AC-3 / 400V: 7.5 kW
Operating Current at AC-3 / 400V: 16 A
Operating Current at AC-1 / 400V: 22 A
Size: S00
Coil Voltage DC: 24 V
Quantity: 1

£42.00 + VAT

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Siemens Sirius 3RT2018-1BB41

Code: Sirius 3RT2018-1BB41
Notes: 1 NO Auxillary contact. Screw connections.
Rated Power at AC-3 / 400V: 7.5 kW
Operating Current at AC-3 / 400V: 16 A
Operating Current at AC-1 / 400V: 22 A
Size: S00
Coil Voltage DC: 24 V
Quantity: 1

£42.00 + VAT

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Siemens Sirius 3RT2024-1BB40

Code: Sirius 3RT2024-1BB40
Notes: 1 NO and 1 NC Auxillary contact. Screw connections
Rated Power at AC-3 / 400V: 5.5 kW
Operating Current at AC-3 / 400V: 12 A
Operating Current at AC-1 / 400V: 40 A
Size: S0
Coil Voltage DC: 24 V
Quantity: 1

£43.00 + VAT

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Siemens Sirius 3RT2025-1BB40

Code: Sirius 3RT2025-1BB40
Notes: 1 NO and 1 NC Auxillary contact. Screw connections
Rated Power at AC-3 / 400V: 7.5 kW
Operating Current at AC-3 / 400V: 17 A
Operating Current at AC-1 / 400V: 40 A
Size: S0
Coil Voltage DC: 24 V
Quantity: 1

£51.00 + VAT

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Siemens Sirius 3RT2026-1BB40

Code: Sirius 3RT2026-1BB40
Notes: 1 NO and 1 NC Auxillary contact. Screw connections
Rated Power at AC-3 / 400V: 11 kW
Operating Current at AC-3 / 400V: 25 A
Operating Current at AC-1 / 400V: 50 A
Size: S0
Coil Voltage DC: 24 V
Quantity: 1

£61.00 + VAT

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Siemens Sirius 3RT2027-1BB40

Code: Sirius 3RT2027-1BB40
Notes: 1 NO and 1 NC Auxillary contact. Screw connections
Rated Power at AC-3 / 400V: 15 kW
Operating Current at AC-3 / 400V: 32 A
Operating Current at AC-1 / 400V: 50 A
Size: S0
Coil Voltage DC: 24 V
Quantity: 1

£84.00 + VAT

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Siemens Sirius 3RT2028-1BB40

Code: Sirius 3RT2028-1BB40
Notes: 1 NO and 1 NC Auxillary contact. Screw connections
Rated Power at AC-3 / 400V: 18.5 kW
Operating Current at AC-3 / 400V: 38 A
Operating Current at AC-1 / 400V: 50 A
Size: S0
Coil Voltage DC: 24 V
Quantity: 1

£92.00 + VAT

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Technical Specification

Protection class on the front   IP20

Impulse voltage resistance   6kV

Insulation voltage   690V

Operating current of the auxillary contacts  
AC-12   10A
AC-15   10A  230V
               3A  400V
DC-13   6A  24V

Type of mounting   Screw or snap-on to 35mm DIN rail

Electrical conection
Main current circuit   Screw-type terminals
Auxillary and control current circuit   Screw-type terminals

Maximum size of the conductor cross section
Size S00
Main contacts
Solid / Stranded   2 x 4mm2
Finely stranded with ferrules   2 x 2.5mm2
AWG   2 x 12

Auxillary contacts 
Solid / Stranded   2 x 4mm2
Finely stranded with ferrules   2 x 2.5mm2
AWG   2 x 12

Size S0
Main contacts
Solid / Stranded   2 x 10mm2
Finely stranded with ferrules   2 x 6mm2 or 1 x 10mm2
AWG   2 x 8

Auxillary contacts
Solid / Stranded   2 x 2.5mm2
Finely stranded with ferrules   2 x 2.5mm2
AWG   2 x 14

Product Dimensions

Dimensions
Siemens Contactor H mm (in) W mm (in) D mm (in) Weight (Kg)
Sirius 3RT2015-1BB41 57.5 45 73 0.220
Sirius 3RT2015-1BB42 57.5  45 73 0.220 
Sirius 3RT2016-1BB41  57.5 45

73

0.220 
Sirius 3RT2016-1BB42 57.5  45 73 0.220 
Sirius 3RT2017-1BB41 57.5  45 73 0.220 
Sirius 3RT2017-1BB42 57.5  45 73 0.220 
Sirius 3RT2018-1BB41 57.5  45 73 0.220 
Sirius 3RT2018-1BB42 57.5  45 73 0.220 
Sirius 3RT2023-1BB40 85 45 92 0.390
Sirius 3RT2024-1BB40 85 45 92 0.390
Sirius 3RT2025-1BB40 85 45 92 0.390
Sirius 3RT2026-1BB40 85 45 92 0.390 
Sirius 3RT2027-1BB40 85 45 92 0.390 
Sirius 3RT2028-1BB40 85 45 92 0.390 

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