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Why SIRIUS 3RV2 circuit breakers?

SIRIUS 3RV2 circuit breakers are motor starter protection devices that isolate feeders from the power supply during short-circuit and overcurrent. By quickly disconnecting equipment during a failure, they prevent expensive damage and help ensure maximum productivity. Their housings are largely made from sustainable plastic using recycled organic waste, without compromising quality or performance.SIRIUS 3RV2 circuit breakers have a variety of applications, including:

  • Motor protection
  • Motor protection with overload relay function
  • Starter combination
  • Transformer protection
  • Plant protection
  • UL 489 certified products
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Key benefits

Isolate faulty load systems

In the event of a short-circuit—current >13 times the rated current—the short-circuit releases isolate the faulty load feeder from the power supply within only a few milliseconds.

Prevent system damage

Prevent damage to the load and system with overload release based on a specific time-current characteristic. Easily make repairs thanks to a motor starter protector with a lockable operating mechanism for manual closing/opening.

Enable a variety of applications

Available in sizes S00, S0, S2 and S3 as well as in different versions, our motor starter protectors/circuit breakers cover all tasks involved in the protection of motors, starters, transformers and UL 489 applications.

Featured capabilities

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Optional door coupling

Door-coupling rotary operating mechanisms can be mounted in a control cabinet and operated externally. When the cabinet door is closed, the operating mechanism is coupled and locked, which prevents unintentional opening.