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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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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
Contactors - Electromechanical Contactor. AC-3. 40 A/400 V/60 3RT20351SP30 Siemens 1: $480.44 3In Stock	Mfr. Part No. 3RT20351SP30 Mouser Part No 982-3RT20351SP30	Siemens	Contactors - Electromechanical Contactor. AC-3. 40 A/400 V/60 Learn More about Siemens sirius 2 contactors	Datasheet	3In Stock	$480.44 $471.00	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S2 50A 20-33VUC SCREW 2NO/2NC 3RT20361NB343MA0 Siemens 1: $489.60 1In Stock 2Expected 2026/10/26	Mfr. Part No. 3RT20361NB343MA0 Mouser Part No 982-3RT20361NB343MA0	Siemens	Contactors - Electromechanical CONTACTOR S2 50A 20-33VUC SCREW 2NO/2NC Learn More about Siemens sirius 2 contactors	Datasheet	1In Stock 2Expected 2026/10/26	$489.60 $489.59	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S2 50A 24VAC SPRING 1NO/1NC 3RT20363AB00 Siemens 1: $360.62 1In Stock	Mfr. Part No. 3RT20363AB00 Mouser Part No 982-3RT20363AB00	Siemens	Contactors - Electromechanical CONTACTOR S2 50A 24VAC SPRING 1NO/1NC Learn More about Siemens sirius 2 contactors	Datasheet	1In Stock	$360.62	Min.: 1 Mult.: 1
Contactors - Electromechanical 4NO CONTACTOR. AC1: 40A. 24 VDC 3RT23261BB401AA0 Siemens 1: $451.14 2In Stock	Mfr. Part No. 3RT23261BB401AA0 Mouser Part No 982-3RT23261BB401AA0	Siemens	Contactors - Electromechanical 4NO CONTACTOR. AC1: 40A. 24 VDC Learn More about Siemens sirius 2 contactors	Datasheet	2In Stock	$451.14 $442.28	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S00 12A 110VDC 2NO/2NC SPRG 3RT25172BF40 Siemens 1: $160.75 1In Stock	Mfr. Part No. 3RT25172BF40 Mouser Part No 982-3RT25172BF40	Siemens	Contactors - Electromechanical CONTACTOR S00 12A 110VDC 2NO/2NC SPRG Learn More about Siemens sirius 2 contactors	Datasheet	1In Stock	$160.75 $159.81 $156.64 View Quote	Min.: 1 Mult.: 1
Contactors - Electromechanical CAP CONTACTOR 25KVAR 1NO+2NC 120VAC 3RT26271AK65 Siemens 1: $327.00 1In Stock	Mfr. Part No. 3RT26271AK65 Mouser Part No 982-3RT26271AK65	Siemens	Contactors - Electromechanical CAP CONTACTOR 25KVAR 1NO+2NC 120VAC Learn More about Siemens sirius 2 contactors	Datasheet	1In Stock	$327.00 $326.99	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S6 150A 110-127VUC 3P BAR 3RT10556AF363PA0 Siemens 1: $1,367.50 1In Stock	Mfr. Part No. 3RT10556AF363PA0 Mouser Part No 982-3RT10556AF363PA0	Siemens	Contactors - Electromechanical CONTACTOR S6 150A 110-127VUC 3P BAR Learn More about Siemens 3rt1 contactors	Datasheet	1In Stock	$1,367.50 $1,194.32	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S00 7A 24VAC 1NO SCRW 3RT20151AB01 Siemens 1: $100.66 11In Stock	Mfr. Part No. 3RT20151AB01 Mouser Part No 982-3RT20151AB01	Siemens	Contactors - Electromechanical CONTACTOR S00 7A 24VAC 1NO SCRW Learn More about Siemens 3rt2 contactors	Datasheet	11In Stock	$100.66 $94.32 $89.34 $83.92 View $78.80 Quote	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S00 9A 24VDC 1NC SCRW 3RT20161FB443MA0 Siemens 1: $200.75 5In Stock	Mfr. Part No. 3RT20161FB443MA0 Mouser Part No 982-3RT20161FB443MA0	Siemens	Contactors - Electromechanical CONTACTOR S00 9A 24VDC 1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	5In Stock	$200.75 $178.74 $170.74 $164.90 View Quote	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S0 25A 24VDC 1NO/1NC SCRW 3RT20261KB40 Siemens 1: $356.03 3In Stock	Mfr. Part No. 3RT20261KB40 Mouser Part No 982-3RT20261KB40	Siemens	Contactors - Electromechanical CONTACTOR S0 25A 24VDC 1NO/1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	3In Stock	$356.03 $317.16 $302.85	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S0 32A 220VAC 1NO/1NC SCRW 3RT20271AN20 Siemens 1: $300.26 5In Stock	Mfr. Part No. 3RT20271AN20 Mouser Part No 982-3RT20271AN20	Siemens	Contactors - Electromechanical CONTACTOR S0 32A 220VAC 1NO/1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	5In Stock	$300.26 $267.49 $255.44	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR RES S0 42A 24VDC 5NO/1NC SCRW 3RT23271BB40 Siemens 1: $511.42 2In Stock	Mfr. Part No. 3RT23271BB40 Mouser Part No 982-3RT23271BB40	Siemens	Contactors - Electromechanical CONTACTOR RES S0 42A 24VDC 5NO/1NC SCRW Learn More about Siemens 3rt23 contactors	Datasheet	2In Stock	$511.42 $455.54	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S0 12A 24VDC 2NO/2NC SCRW 3RT20241BB443MA0 Siemens 1: $280.71 5In Stock	Mfr. Part No. 3RT20241BB443MA0 Mouser Part No 982-3RT20241BB443MA0	Siemens	Contactors - Electromechanical CONTACTOR S0 12A 24VDC 2NO/2NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	5In Stock	$280.71 $250.08 $238.81	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S0 25A 220VAC 1NO/1NC SCRW 3RT20261AN20 Siemens 1: $214.54 5In Stock	Mfr. Part No. 3RT20261AN20 Mouser Part No 982-3RT20261AN20	Siemens	Contactors - Electromechanical CONTACTOR S0 25A 220VAC 1NO/1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	5In Stock	$214.54 $191.10 $182.46 $176.21 View Quote	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S0 32A 110VAC 1NO/1NC SCRW 3RT20271AG20 Siemens 1: $300.26 3In Stock	Mfr. Part No. 3RT20271AG20 Mouser Part No 982-3RT20271AG20	Siemens	Contactors - Electromechanical CONTACTOR S0 32A 110VAC 1NO/1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	3In Stock	$300.26 $267.44 $255.38	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S00 9A 120VAC 1NO SCRW 3RT20161AK61 Siemens 1: $110.40 16In Stock	Mfr. Part No. 3RT20161AK61 Mouser Part No 982-3RT20161AK61	Siemens	Contactors - Electromechanical CONTACTOR S00 9A 120VAC 1NO SCRW Learn More about Siemens 3rt2 contactors	Datasheet	16In Stock	$110.40 $100.19 $95.68 $90.27 View $84.77 Quote	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S0 25A 110VAC 1NO/1NC SCRW 3RT20261AG20 Siemens 1: $214.54 5In Stock	Mfr. Part No. 3RT20261AG20 Mouser Part No 982-3RT20261AG20	Siemens	Contactors - Electromechanical CONTACTOR S0 25A 110VAC 1NO/1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	5In Stock	$214.54 $191.10 $182.46 $176.22 View Quote	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR SZ 1 32A 120VAC 1NO/1NC SCRW 3RT20271AK600UA0 Siemens 1: $352.48 3In Stock	Mfr. Part No. 3RT20271AK600UA0 Mouser Part No 982-3RT20271AK600UA0	Siemens	Contactors - Electromechanical CONTACTOR SZ 1 32A 120VAC 1NO/1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	3In Stock	$352.48 $314.01 $299.81	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S0 38A 220VAC 1NO/1NC SCRW 3RT20281AN20 Siemens 1: $332.99 3In Stock	Mfr. Part No. 3RT20281AN20 Mouser Part No 982-3RT20281AN20	Siemens	Contactors - Electromechanical CONTACTOR S0 38A 220VAC 1NO/1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	3In Stock	$332.99 $296.65 $283.24	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S2 50A 20-33VUC SCREW 1NO/1NC 3RT20361NB30 Siemens 1: $450.09 2In Stock 1Expected 2026/10/23	Mfr. Part No. 3RT20361NB30 Mouser Part No 982-3RT20361NB30	Siemens	Contactors - Electromechanical CONTACTOR S2 50A 20-33VUC SCREW 1NO/1NC Learn More about Siemens 3rt2 contactors	Datasheet	2In Stock 1Expected 2026/10/23	$450.09 $400.97 $382.85	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S2 50A 120VAC SPRING 1NO/1NC 3RT20363AK60 Siemens 1: $309.60 3In Stock	Mfr. Part No. 3RT20363AK60 Mouser Part No 982-3RT20363AK60	Siemens	Contactors - Electromechanical CONTACTOR S2 50A 120VAC SPRING 1NO/1NC Learn More about Siemens 3rt2 contactors	Datasheet	3In Stock	$309.60	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S00 9A 24VDC 2NO/2NC SCRW 3RT25161BB40 Siemens 1: $133.93 11In Stock	Mfr. Part No. 3RT25161BB40 Mouser Part No 982-3RT25161BB40	Siemens	Contactors - Electromechanical CONTACTOR S00 9A 24VDC 2NO/2NC SCRW Learn More about Siemens sirius 2 contactors	Datasheet	11In Stock	$133.93 $122.82 $115.36 $110.19 View $102.87 Quote	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S2 40A 230VAC SCREW 1NO/1NC 3RT20351AL20 Siemens 1: $322.69 4In Stock	Mfr. Part No. 3RT20351AL20 Mouser Part No 982-3RT20351AL20	Siemens	Contactors - Electromechanical CONTACTOR S2 40A 230VAC SCREW 1NO/1NC Learn More about Siemens 3rt2 contactors	Datasheet	4In Stock	$322.69 $287.41 $274.44	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR S0 12A 24VAC 1NO/1NC SCRW 3RT20241AC20 Siemens 1: $130.80 12In Stock	Mfr. Part No. 3RT20241AC20 Mouser Part No 982-3RT20241AC20	Siemens	Contactors - Electromechanical CONTACTOR S0 12A 24VAC 1NO/1NC SCRW Learn More about Siemens 3rt2 contactors	Datasheet	12In Stock	$130.80 $119.96 $112.76 $107.54 View $100.40 Quote	Min.: 1 Mult.: 1
Contactors - Electromechanical CONTACTOR DC 5.5kW 24V 3POLE SZ S0 3RT20242BB40 Siemens 1: $237.08 5In Stock	Mfr. Part No. 3RT20242BB40 Mouser Part No 982-3RT20242BB40	Siemens	Contactors - Electromechanical CONTACTOR DC 5.5kW 24V 3POLE SZ S0 Learn More about Siemens 3rt2 contactors	Datasheet	5In Stock	$237.08 $211.92 $201.64 $194.74 View Quote	Min.: 1 Mult.: 1

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