• Siemens SIRIUS 3RT12 Vacuum Contactors S10-S12 (110-250 kW)
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Siemens SIRIUS 3RT12 Vacuum Contactors S10-S12 (110-250 kW)

Siemens SIRIUS 3RT12 Vacuum Contactors S10-S12 (110-250 kW)

SIRIUS 3RT12 3-pole vacuum contactors in sizes S10 and S12 for motors from 110 to 250 kW at 400 V, with standard or solid-state AC/DC operating mechanism.

Key features

  • Vacuum interrupters for high switching frequency and long contact life
  • Standard operating mechanisms 3RT12..-.A or solid-state 3RT12..-.N with 24 V DC digital input
  • Ratings 225 to 500 A at 690 V (110 to 250 kW at 400 V), AC-1 330 to 610 A
  • 2 NO + 2 NC lateral auxiliary contacts, varistor integrated
  • Busbar main connections, screw terminals for auxiliary and control conductors

Specifications

Brand line SIRIUS
Series 3RT12 vacuum contactor
Poles 3 (main contacts)
Main conductors Busbar connections (parts kit incl.)
Fixing Screw fixing
Utilization AC-3 / AC-3e, IE3/IE4 ready
Aux. contacts 2 NO + 2 NC (lateral)
Connection Screw (aux./control)
Manufacturer Siemens
Product category Magnetic Contactors
Catalog chapter Contactors for switching motors
Source Siemens Catalog IC 10 · 2026, p. 193, 251
3RT1264-6AF36 Type: 3RT1264 (S10) | Rating: AC-3 225 A/110 kW; AC-1 330 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1264-6AP36 Type: 3RT1264 (S10) | Rating: AC-3 225 A/110 kW; AC-1 330 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1265-6AF36 Type: 3RT1265 (S10) | Rating: AC-3 265 A/132 kW; AC-1 330 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1265-6AP36 Type: 3RT1265 (S10) | Rating: AC-3 265 A/132 kW; AC-1 330 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1266-6AF36 Type: 3RT1266 (S10) | Rating: AC-3 300 A/160 kW; AC-1 330 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1266-6AP36 Type: 3RT1266 (S10) | Rating: AC-3 300 A/160 kW; AC-1 330 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1275-6AF36 Type: 3RT1275 (S12) | Rating: AC-3 400 A/200 kW; AC-1 610 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1275-6AP36 Type: 3RT1275 (S12) | Rating: AC-3 400 A/200 kW; AC-1 610 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1276-6AF36 Type: 3RT1276 (S12) | Rating: AC-3 500 A/250 kW; AC-1 610 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1276-6AP36 Type: 3RT1276 (S12) | Rating: AC-3 500 A/250 kW; AC-1 610 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1264-6NF36 Type: 3RT1264 (S10) | Rating: AC-3 225 A/110 kW; AC-1 330 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1264-6NP36 Type: 3RT1264 (S10) | Rating: AC-3 225 A/110 kW; AC-1 330 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
3RT1265-6NF36 Type: 3RT1265 (S10) | Rating: AC-3 265 A/132 kW; AC-1 330 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1265-6NP36 Type: 3RT1265 (S10) | Rating: AC-3 265 A/132 kW; AC-1 330 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
3RT1266-6NF36 Type: 3RT1266 (S10) | Rating: AC-3 300 A/160 kW; AC-1 330 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1266-6NP36 Type: 3RT1266 (S10) | Rating: AC-3 300 A/160 kW; AC-1 330 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
3RT1275-6NF36 Type: 3RT1275 (S12) | Rating: AC-3 400 A/200 kW; AC-1 610 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1275-6NP36 Type: 3RT1275 (S12) | Rating: AC-3 400 A/200 kW; AC-1 610 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
3RT1276-6NF36 Type: 3RT1276 (S12) | Rating: AC-3 500 A/250 kW; AC-1 610 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1276-6NP36 Type: 3RT1276 (S12) | Rating: AC-3 500 A/250 kW; AC-1 610 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
Magnetic ContactorsSiemens
20 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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Siemens SIRIUS 3RT12 Vacuum Contactors S10-S12 (110-250 kW)

Brand Siemens·Magnetic Contactors

Available part numbers (20)

3RT1264-6AF36, 3RT1264-6AP36, 3RT1265-6AF36, 3RT1265-6AP36, 3RT1266-6AF36, 3RT1266-6AP36, 3RT1275-6AF36, 3RT1275-6AP36, 3RT1276-6AF36, 3RT1276-6AP36 + 10 more — see full table ↓

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Product codes & specifications
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RFQ List (0)
Product codeSpec
3RT1264-6AF36Type: 3RT1264 (S10) | Rating: AC-3 225 A/110 kW; AC-1 330 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1264-6AP36Type: 3RT1264 (S10) | Rating: AC-3 225 A/110 kW; AC-1 330 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1265-6AF36Type: 3RT1265 (S10) | Rating: AC-3 265 A/132 kW; AC-1 330 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1265-6AP36Type: 3RT1265 (S10) | Rating: AC-3 265 A/132 kW; AC-1 330 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1266-6AF36Type: 3RT1266 (S10) | Rating: AC-3 300 A/160 kW; AC-1 330 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1266-6AP36Type: 3RT1266 (S10) | Rating: AC-3 300 A/160 kW; AC-1 330 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1275-6AF36Type: 3RT1275 (S12) | Rating: AC-3 400 A/200 kW; AC-1 610 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1275-6AP36Type: 3RT1275 (S12) | Rating: AC-3 400 A/200 kW; AC-1 610 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1276-6AF36Type: 3RT1276 (S12) | Rating: AC-3 500 A/250 kW; AC-1 610 A | Coil: 110-127 V AC/DC | Version: Standard operating mechanism
3RT1276-6AP36Type: 3RT1276 (S12) | Rating: AC-3 500 A/250 kW; AC-1 610 A | Coil: 220-240 V AC/DC | Version: Standard operating mechanism
3RT1264-6NF36Type: 3RT1264 (S10) | Rating: AC-3 225 A/110 kW; AC-1 330 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1264-6NP36Type: 3RT1264 (S10) | Rating: AC-3 225 A/110 kW; AC-1 330 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
3RT1265-6NF36Type: 3RT1265 (S10) | Rating: AC-3 265 A/132 kW; AC-1 330 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1265-6NP36Type: 3RT1265 (S10) | Rating: AC-3 265 A/132 kW; AC-1 330 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
3RT1266-6NF36Type: 3RT1266 (S10) | Rating: AC-3 300 A/160 kW; AC-1 330 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1266-6NP36Type: 3RT1266 (S10) | Rating: AC-3 300 A/160 kW; AC-1 330 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
3RT1275-6NF36Type: 3RT1275 (S12) | Rating: AC-3 400 A/200 kW; AC-1 610 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1275-6NP36Type: 3RT1275 (S12) | Rating: AC-3 400 A/200 kW; AC-1 610 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input
3RT1276-6NF36Type: 3RT1276 (S12) | Rating: AC-3 500 A/250 kW; AC-1 610 A | Coil: 96-127 V AC/DC | Version: Solid-state, 24 V DC input
3RT1276-6NP36Type: 3RT1276 (S12) | Rating: AC-3 500 A/250 kW; AC-1 610 A | Coil: 200-277 V AC/DC | Version: Solid-state, 24 V DC input

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