• Siemens SIRIUS 3RA28 Function Modules for 3RT2 Contactors
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Siemens SIRIUS 3RA28 Function Modules for 3RT2 Contactors

Siemens SIRIUS 3RA28 Function Modules for 3RT2 Contactors

SIRIUS 3RA28 function modules for mounting on 3RT20 contactors and 3RH2 relays for ON-delay, OFF-delay and star-delta starting.

Key features

  • ON-delay (two-wire) and OFF-delay with control signal, 0.05 to 100 s
  • Star-delta function module set (basic + two coupling modules), 0.5 to 60 s
  • Varistor integrated; automatic electrical connection when snapped on
  • Versions for sizes S00/S0 and S2/S3
  • Sealable cover 3RA2910-0 available

Specifications

Brand line SIRIUS
Accessory for SIRIUS 3RT contactors / 3RH2 relays
Manufacturer Siemens
Product category Accessories
Catalog chapter Contactors for switching motors
Catalog section 3RT/3RH2 accessories: Modules for contactor control
Source Siemens Catalog IC 10 · 2026, p. 226
3RA2811-1CW10 Function: ON-delay, two-wire | For: 3RT201/3RT202, 3RH21/24 (S00/S0) | Uc: 24-240 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2811-2CW10 Function: ON-delay, two-wire | For: 3RT201/3RT202, 3RH21/24 (S00/S0) | Uc: 24-240 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2831-1DG10 Function: ON-delay, two-wire | For: 3RT203/3RT204 (S2/S3) | Uc: 24-90 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2831-2DG10 Function: ON-delay, two-wire | For: 3RT203/3RT204 (S2/S3) | Uc: 24-90 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2831-1DH10 Function: ON-delay, two-wire | For: 3RT203/3RT204 (S2/S3) | Uc: 90-240 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2831-2DH10 Function: ON-delay, two-wire | For: 3RT203/3RT204 (S2/S3) | Uc: 90-240 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2812-1DW10 Function: OFF-delay with control signal | For: 3RT201/3RT202, 3RH21/24 (S00/S0) | Uc: 24-240 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2812-2DW10 Function: OFF-delay with control signal | For: 3RT201/3RT202, 3RH21/24 (S00/S0) | Uc: 24-240 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2832-1DG10 Function: OFF-delay with control signal | For: 3RT203/3RT204 (S2/S3) | Uc: 24-90 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2832-2DG10 Function: OFF-delay with control signal | For: 3RT203/3RT204 (S2/S3) | Uc: 24-90 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2832-1DH10 Function: OFF-delay with control signal | For: 3RT203/3RT204 (S2/S3) | Uc: 90-240 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2832-2DH10 Function: OFF-delay with control signal | For: 3RT203/3RT204 (S2/S3) | Uc: 90-240 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2816-0EW20 Function: Star-delta (basic + 2 coupling mod.) | For: 3RT201-3RT204 (S00-S3) | Uc: 24-240 V AC/DC | Time range: 0.5-60 s | Connection: Screw / spring-loaded
3RA2910-0 Function: Cover, sealable (accessory) | For: 3RA27/3RA28 function modules | Uc: -- | Time range: -- | Connection: --
AccessoriesSiemens
14 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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Siemens SIRIUS 3RA28 Function Modules for 3RT2 Contactors

Brand Siemens·Accessories

Available part numbers (14)

3RA2811-1CW10, 3RA2811-2CW10, 3RA2831-1DG10, 3RA2831-2DG10, 3RA2831-1DH10, 3RA2831-2DH10, 3RA2812-1DW10, 3RA2812-2DW10, 3RA2832-1DG10, 3RA2832-2DG10 + 4 more — see full table ↓

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Product codes & specifications
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RFQ List (0)
Product codeSpec
3RA2811-1CW10Function: ON-delay, two-wire | For: 3RT201/3RT202, 3RH21/24 (S00/S0) | Uc: 24-240 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2811-2CW10Function: ON-delay, two-wire | For: 3RT201/3RT202, 3RH21/24 (S00/S0) | Uc: 24-240 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2831-1DG10Function: ON-delay, two-wire | For: 3RT203/3RT204 (S2/S3) | Uc: 24-90 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2831-2DG10Function: ON-delay, two-wire | For: 3RT203/3RT204 (S2/S3) | Uc: 24-90 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2831-1DH10Function: ON-delay, two-wire | For: 3RT203/3RT204 (S2/S3) | Uc: 90-240 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2831-2DH10Function: ON-delay, two-wire | For: 3RT203/3RT204 (S2/S3) | Uc: 90-240 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2812-1DW10Function: OFF-delay with control signal | For: 3RT201/3RT202, 3RH21/24 (S00/S0) | Uc: 24-240 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2812-2DW10Function: OFF-delay with control signal | For: 3RT201/3RT202, 3RH21/24 (S00/S0) | Uc: 24-240 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2832-1DG10Function: OFF-delay with control signal | For: 3RT203/3RT204 (S2/S3) | Uc: 24-90 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2832-2DG10Function: OFF-delay with control signal | For: 3RT203/3RT204 (S2/S3) | Uc: 24-90 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2832-1DH10Function: OFF-delay with control signal | For: 3RT203/3RT204 (S2/S3) | Uc: 90-240 V AC/DC | Time range: 0.05-100 s | Connection: Screw
3RA2832-2DH10Function: OFF-delay with control signal | For: 3RT203/3RT204 (S2/S3) | Uc: 90-240 V AC/DC | Time range: 0.05-100 s | Connection: Spring-loaded
3RA2816-0EW20Function: Star-delta (basic + 2 coupling mod.) | For: 3RT201-3RT204 (S00-S3) | Uc: 24-240 V AC/DC | Time range: 0.5-60 s | Connection: Screw / spring-loaded
3RA2910-0Function: Cover, sealable (accessory) | For: 3RA27/3RA28 function modules | Uc: -- | Time range: -- | Connection: --

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