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Siemens SIRIUS 3RT20 Contactors
Siemens SIRIUS 3RT20 Contactors - Image 2
Siemens SIRIUS 3RT20 Contactors - Image 3

Siemens SIRIUS 3RT20 Contactors

Manufacturer: Siemens
Model: SIRIUS 3RT20 Contactor
Electric ratings: AC 50/60Hz, 7A–38A
Control coil: 24V–250V DC
Mounting version: Screw or DIN rail
Key Sourcing Insight: China-made Siemens 3RT6 / 3RT5 contactors provide a faster and more economical alternative to imported 3RT2 models.

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Product Description

The Siemens SIRIUS 3RT20 Contactors are high-performance solutions for motor and power switching applications in industrial systems. With current ratings ranging from 9A to 265A, these contactors are optimized for AC-3 operation, especially in motor starter combinations. The 3RT20 series offers a compact footprint, easy integration into control panels, and reliable switching performance. With both AC and DC coil versions available and a broad range of accessories, the SIRIUS 3RT20 contactors are a trusted choice for use in manufacturing, building automation, and power distribution systems.

Supply Advantage & Procurement Notes

We can offer Siemens China-manufactured 3RT6 and 3RT5 contactors as replacements for imported 3RT2 series.

These alternatives provide pricing advantages and significantly shorter delivery times, while meeting standard application requirements.

3RT2 Replacement China-Manufactured Alternative Faster Delivery & Cost Advantage

Standard Features

  • Flexible Coil Options: Available in AC and DC coils from 24V up to 230V.

  • Compact & Modular Design: Fits easily into control cabinets with modular expandability.

  • High Electrical Durability: Suitable for millions of switching operations under load.

  • Built-in Auxiliary Contacts: Available with NO/NC combinations for control circuit integration.

  • Quick Installation: DIN rail or screw mounting for flexible setup.

  • Global Certifications: Meets IEC, UL, and CSA standards for international use.

Technical Specifications

 

ModelRated Current (A)Coil Voltage
3RT20151BB41724 V DC
3RT20251BB401724 V DC
3RT20281BB403824 V DC
3RT20151BW417110–127 V AC
3RT20251BW4017110–127 V AC
3RT20281BW4038110–127 V AC
3RT20151BF417220–240 V AC
3RT20251BF4017220–240 V AC
3RT20281BF4038220–240 V AC
3RT20151BM417380–415 V AC
3RT20181BM4138380–415 V AC
3RT20271BM4065380–415 V AC

 

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