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Siemens SIRIUS 3RF33 Solid-State Contactor 20 A (1-Pole)

Siemens SIRIUS 3RF33 Solid-State Contactor 20 A (1-Pole)

  • Brand: Siemens
  • Product Code: 3RF33 20 A

Prices are prepared per project according to capacity, energy type and delivery terms.

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Siemens SIRIUS 3RF33 20 A solid-state contactor: 1-pole, with integrated heat sink, ready to use. Contactless, silent and wear-free switching makes it ideal for frequently switched loads such as heating elements.

Technical data

Series3RF33
Product typeSolid-State Contactor, 1-pole, with integrated heat sink, ready to use
Maximum current20 A (AC-51)
Line voltage24–230 V AC, 48–460 V AC, 48–600 V AC
Control supply voltage110 V DC, 110–230 V AC, 24 V AC/DC, 24 V DC, 4–30 V DC
ConnectionScrew, Spring-loaded, Ring cable lug
Frequency50–60 Hz
Typical useResistive heaters, furnace and extruder heating zones, loads with frequent switching

Article numbers

Line voltageSwitching typeControl voltageConnectionArticle No.
24–230 V ACZero-point switching24 V DCScrew3RF3320-1AA02
24–230 V ACZero-point switching110–230 V ACScrew3RF3320-1AA22
24–230 V ACZero-point switching, low control power24 V DCScrew3RF3320-1AA02-0KN0
48–460 V ACZero-point switching24 V DCScrew3RF3320-1AA04
48–460 V ACZero-point switching4–30 V DCScrew3RF3320-1AA44
48–460 V ACZero-point switching24 V AC/DCScrew3RF3320-1AA14
48–460 V ACZero-point switching110–230 V ACScrew3RF3320-1AA24
24–230 V ACZero-point switching, short-circuit-proof with miniature circuit breaker24 V DCScrew3RF3320-1DA02
24–230 V ACZero-point switching, short-circuit-proof with miniature circuit breaker110–230 V ACScrew3RF3320-1DA22
48–460 V ACZero-point switching, short-circuit-proof with miniature circuit breaker24 V DCScrew3RF3320-1DA04
48–460 V ACZero-point switching, short-circuit-proof with miniature circuit breaker4–30 V DCScrew3RF3320-1DA44
48–460 V ACZero-point switching, short-circuit-proof with miniature circuit breaker110–230 V ACScrew3RF3320-1DA24
48–600 V ACZero-point switching4–30 V DCScrew3RF3320-1AA45
48–600 V ACZero-point switching110 V DCScrew3RF3320-1AA65
48–600 V ACZero-point switching, high blocking voltage (1600 V)24 V DCScrew3RF3320-1AA06
48–600 V ACZero-point switching, high blocking voltage (1600 V)110–230 V ACScrew3RF3320-1AA26
24–230 V ACInstantaneous switching24 V DCScrew3RF3320-1BA02
24–230 V ACInstantaneous switching110–230 V ACScrew3RF3320-1BA22
48–460 V ACInstantaneous switching24 V DCScrew3RF3320-1BA04
48–460 V ACInstantaneous switching110–230 V ACScrew3RF3320-1BA24
48–460 V ACInstantaneous switching4–30 V DCScrew3RF3320-1BA44
48–600 V ACInstantaneous switching, high blocking voltage (1600 V)24 V DCScrew3RF3320-1BA06
48–600 V ACInstantaneous switching, high blocking voltage (1600 V)110–230 V ACScrew3RF3320-1BA26
24–230 V ACZero-point switching24 V DCSpring-loaded3RF3320-2AA02
24–230 V ACZero-point switching110–230 V ACSpring-loaded3RF3320-2AA22
24–230 V ACZero-point switching, short-circuit-proof with miniature circuit breaker110–230 V ACSpring-loaded3RF3320-2DA22
48–460 V ACZero-point switching24 V DCSpring-loaded3RF3320-2AA04
48–460 V ACZero-point switching110–230 V ACSpring-loaded3RF3320-2AA24
48–460 V ACZero-point switching, short-circuit-proof with miniature circuit breaker24 V DCSpring-loaded3RF3320-2DA04
48–460 V ACZero-point switching, short-circuit-proof with miniature circuit breaker110–230 V ACSpring-loaded3RF3320-2DA24
48–600 V ACZero-point switching, high blocking voltage (1600 V)24 V DCSpring-loaded3RF3320-2AA06
48–600 V ACZero-point switching, high blocking voltage (1600 V)110–230 V ACSpring-loaded3RF3320-2AA26
24–230 V ACZero-point switching24 V DCRing cable lug3RF3320-3AA02
48–460 V ACZero-point switching24 V DCRing cable lug3RF3320-3AA04
48–460 V ACZero-point switching4–30 V DCRing cable lug3RF3320-3AA44
48–600 V ACZero-point switching, high blocking voltage (1600 V)24 V DCRing cable lug3RF3320-3AA06

Zero-point switching versions are for resistive loads (heaters), instantaneous switching versions for inductive loads. In systems with high voltage peaks or at 575 V and above, versions with 1600 V blocking voltage are recommended. Other control supply voltages on request.

Technical data and article numbers are based on Siemens catalog IC 10 · 2026 (chapter 6, solid-state switching devices) and are for information only. Image is representative.

For price, stock and lead time, use the Request a Quote button or call +90 533 945 27 94. Sending the article number is enough.

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