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SIRIUS 2 Contactors

Siemens SIRIUS 2 Contactors provide switching with high contact reliability, prolonged endurance, and usability in extreme conditions. The comprehensive SIRIUS 2 lineup includes 3RT devices that offer up to 2650A switching without current derating, even at an ambient temperature of +55°C. Siemens SIRIUS 2 Contactors comply with all major standards and certificates, making them suitable for a variety of applications.

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Part #

Contactors - Electromechanical CONTACTOR S0 12A 240VAC 1NO/1NC SCRW

3RT20241AP60
Siemens
1: $116.63
5In Stock

Mfr. Part No.
3RT20241AP60

Mouser Part No
982-3RT20241AP60

Siemens

Contactors - Electromechanical CONTACTOR S0 12A 240VAC 1NO/1NC SCRW

Datasheet

5In Stock

$116.63

$103.88

$99.19

$95.77

$92.48

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 12A 24VDC 2NO/2NC SCRW

3RT20241BB443MA0
Siemens
1: $228.41
5In Stock

Mfr. Part No.
3RT20241BB443MA0

Mouser Part No
982-3RT20241BB443MA0

Siemens

Contactors - Electromechanical CONTACTOR S0 12A 24VDC 2NO/2NC SCRW

Datasheet

5In Stock

$228.41

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 12A 110VDC 1NO/1NC SCRW

3RT20241BF40
Siemens
1: $223.34
3In Stock

Mfr. Part No.
3RT20241BF40

Mouser Part No
982-3RT20241BF40

Siemens

Contactors - Electromechanical CONTACTOR S0 12A 110VDC 1NO/1NC SCRW

Datasheet

3In Stock

$223.34

$222.35

$220.94

$220.03

View

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR DC 5.5kW 24V 3POLE SZ S0

3RT20242BB40
Siemens
1: $198.34
1In Stock

Mfr. Part No.
3RT20242BB40

Mouser Part No
982-3RT20242BB40

Siemens

Contactors - Electromechanical CONTACTOR DC 5.5kW 24V 3POLE SZ S0

Datasheet

1In Stock

$198.34

$197.50

$190.70

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 12A 24VDC 1NO/1NC SPRG

3RT20242FB40
Siemens
1: $281.18
3In Stock

Mfr. Part No.
3RT20242FB40

Mouser Part No
982-3RT20242FB40

Siemens

Contactors - Electromechanical CONTACTOR S0 12A 24VDC 1NO/1NC SPRG

Datasheet

3In Stock

$281.18

$281.09

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 24VAC 1NO/1NC SCRW

3RT20251AB00
Siemens
1: $160.19
5In Stock

Mfr. Part No.
3RT20251AB00

Mouser Part No
982-3RT20251AB00

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 24VAC 1NO/1NC SCRW

Datasheet

5In Stock

$160.19

$143.74

$137.23

$132.51

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 24VAC 1NO/1NC SCRW

3RT20251AC20
Siemens
1: $153.31
5In Stock

Mfr. Part No.
3RT20251AC20

Mouser Part No
982-3RT20251AC20

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 24VAC 1NO/1NC SCRW

Datasheet

5In Stock

$153.31

$136.50

$130.34

$125.88

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 110VAC 1NO/1NC SCRW

3RT20251AF00
Siemens
1: $153.28
3In Stock

Mfr. Part No.
3RT20251AF00

Mouser Part No
982-3RT20251AF00

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 110VAC 1NO/1NC SCRW

Datasheet

3In Stock

$153.28

$136.55

$130.37

$125.88

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 110VAC 1NO/1NC SCRW

3RT20251AG20
Siemens
1: $114.96
5In Stock

Mfr. Part No.
3RT20251AG20

Mouser Part No
982-3RT20251AG20

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 110VAC 1NO/1NC SCRW

Datasheet

5In Stock

$114.96

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR_AC_3RT2025-1AL20_7.5kW_230V

3RT20251AL20
Siemens
1: $153.30
3In Stock

Mfr. Part No.
3RT20251AL20

Mouser Part No
982-3RT20251AL20

Siemens

Contactors - Electromechanical CONTACTOR_AC_3RT2025-1AL20_7.5kW_230V

Datasheet

3In Stock

$153.30

$136.55

$130.37

$125.88

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 220VAC 1NO/1NC SCRW

3RT20251AN20
Siemens
1: $134.64
3In Stock

Mfr. Part No.
3RT20251AN20

Mouser Part No
982-3RT20251AN20

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 220VAC 1NO/1NC SCRW

Datasheet

3In Stock

$134.64

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 230VAC 1NO/1NC SCRW

3RT20251AP00
Siemens
1: $114.96
4In Stock

Mfr. Part No.
3RT20251AP00

Mouser Part No
982-3RT20251AP00

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 230VAC 1NO/1NC SCRW

Datasheet

4In Stock

$114.96

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 240VAC 1NO/1NC SCRW

3RT20251AP60
Siemens
1: $153.28
4In Stock

Mfr. Part No.
3RT20251AP60

Mouser Part No
982-3RT20251AP60

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 240VAC 1NO/1NC SCRW

Datasheet

4In Stock

$153.28

$136.55

$130.37

$125.88

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 480VAC 1NO/1NC SCRW

3RT20251AV60
Siemens
1: $161.20
6In Stock

Mfr. Part No.
3RT20251AV60

Mouser Part No
982-3RT20251AV60

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 480VAC 1NO/1NC SCRW

Datasheet

6In Stock

$161.20

$143.63

$137.13

$132.42

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR AC 7.5kW 24V SZ S0

3RT20251BB40
Siemens
1: $204.94
6In Stock
10Expected 2026/03/20

Mfr. Part No.
3RT20251BB40

Mouser Part No
982-3RT20251BB40

Siemens

Contactors - Electromechanical CONTACTOR AC 7.5kW 24V SZ S0

Datasheet

6In Stock

10Expected 2026/03/20

$204.94

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 24VDC 2NO/2NC SCRW

3RT20251BB44
Siemens
1: $295.82
3In Stock

Mfr. Part No.
3RT20251BB44

Mouser Part No
982-3RT20251BB44

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 24VDC 2NO/2NC SCRW

Datasheet

3In Stock

$295.82

$263.51

$251.58

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 24VDC 1NO/1NC SCRW

3RT20251FB40
Siemens
1: $307.82
4In Stock

Mfr. Part No.
3RT20251FB40

Mouser Part No
982-3RT20251FB40

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 24VDC 1NO/1NC SCRW

Datasheet

4In Stock

$307.82

$274.15

$261.74

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 24VDC 1NO/1NC SCRW

3RT20251KB40
Siemens
1: $298.38
3In Stock

Mfr. Part No.
3RT20251KB40

Mouser Part No
982-3RT20251KB40

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 24VDC 1NO/1NC SCRW

Datasheet

3In Stock

$298.38

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 16A 24VDC 1NO/1NC SPRG

3RT20252KB40
Siemens
1: $283.38
2In Stock

Mfr. Part No.
3RT20252KB40

Mouser Part No
982-3RT20252KB40

Siemens

Contactors - Electromechanical CONTACTOR S0 16A 24VDC 1NO/1NC SPRG

Datasheet

2In Stock

$283.38

$252.36

$240.94

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 25A 24VAC 1NO/1NC SCRW

3RT20261AB00
Siemens
1: $209.00
2In Stock

Mfr. Part No.
3RT20261AB00

Mouser Part No
982-3RT20261AB00

Siemens

Contactors - Electromechanical CONTACTOR S0 25A 24VAC 1NO/1NC SCRW

Datasheet

2In Stock

$209.00

$208.89

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 25A 110VAC 1NO/1NC SCRW

3RT20261AF00
Siemens
1: $194.78
6In Stock

Mfr. Part No.
3RT20261AF00

Mouser Part No
982-3RT20261AF00

Siemens

Contactors - Electromechanical CONTACTOR S0 25A 110VAC 1NO/1NC SCRW

Datasheet

6In Stock

$194.78

$176.68

$168.69

$162.88

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 25A 110VAC 1NO/1NC SCRW

3RT20261AG20
Siemens
1: $198.34
2In Stock

Mfr. Part No.
3RT20261AG20

Mouser Part No
982-3RT20261AG20

Siemens

Contactors - Electromechanical CONTACTOR S0 25A 110VAC 1NO/1NC SCRW

Datasheet

2In Stock

$198.34

$176.68

$168.69

$162.88

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 25A 100VAC 1NO/1NC SCRW

3RT20261AG60
Siemens
1: $218.30
2In Stock

Mfr. Part No.
3RT20261AG60

Mouser Part No
982-3RT20261AG60

Siemens

Contactors - Electromechanical CONTACTOR S0 25A 100VAC 1NO/1NC SCRW

Datasheet

2In Stock

$218.30

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 25A 120VAC 1NO/1NC SCRW

3RT20261AK60
Siemens
1: $198.35
3In Stock

Mfr. Part No.
3RT20261AK60

Mouser Part No
982-3RT20261AK60

Siemens

Contactors - Electromechanical CONTACTOR S0 25A 120VAC 1NO/1NC SCRW

Datasheet

3In Stock

$198.35

$176.59

$168.60

$162.88

Min.: 1
Mult.: 1

Contactors - Electromechanical CONTACTOR S0 25A 230VAC 1NO/1NC SCRW

3RT20261AL20
Siemens
1: $198.34
4In Stock
4Expected 2026/03/13

Mfr. Part No.
3RT20261AL20

Mouser Part No
982-3RT20261AL20

Siemens

Contactors - Electromechanical CONTACTOR S0 25A 230VAC 1NO/1NC SCRW

Datasheet

4In Stock

4Expected 2026/03/13

$198.34

$176.68

$168.69

$162.88

Min.: 1
Mult.: 1