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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
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.
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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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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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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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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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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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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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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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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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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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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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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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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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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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 |