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SIRIUS 3RT contactors for AC-1 loads

Siemens SIRIUS 3RT contactors for AC-1 loads

For weakly inductive or non-inductive loads – 3-pole up to 2,650 A.

With resistive loads such as heating, furnaces or lighting there is no high motor inrush current. The 3RT.4 contactors exploit this and switch considerably higher continuous currents in the same size than in category AC-3. The main circuit is connected via busbars, the operating mechanism is conventional or electronic.

Parent category: Siemens SIRIUS 3RT contactors.

Product benefits

  • Proven SIRIUS 3RT range from Siemens – available worldwide and maintained over decades
  • Consistent modular system: auxiliary switches, surge suppressors and link modules fit across sizes
  • Screw or spring-loaded terminals – spring-loaded saves assembly time and is vibration-proof
  • Versions with electronic operating mechanism reduce holding power and work over a wide voltage range
  • Approvals to IEC and UL/CSA, so the same plant can be operated in Europe and North America
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