The Siemens 3RV1021-1CA15 is a robust circuit breaker designed for motor protection, ensuring efficient operation and safety in a variety of industrial applications. This three-pole device is part of the SIRIUS product family, renowned for its reliability and performance. With a CLASS 10 trip class, it offers precise overload protection with an adjustable current setting range from 1.8 to 2.5 A, making it versatile for different motor sizes.
The circuit breaker is engineered to handle a rated operating voltage of up to 690 V ac, and it can manage a motor power of 0.75 kW at 400 V ac in category AC-3. Its compact dimensions of 45 x 96 x 97 mm allow for space-saving installation in control cabinets. The screw terminal connections provide a secure and durable electrical connection, suitable for a wide range of conductor cross-sections.
Featuring a standard breaking capacity with a transverse auxiliary switch configuration of 1 NO+1 NC, the 3RV1021-1CA15 is equipped to handle typical mechanical service life demands with up to 100,000 switching cycles. It is also designed to withstand challenging environmental conditions, with an operational temperature range from -20 to +60 °C and storage temperatures ranging from -50 to +80 °C.
This circuit breaker is a discontinued product, with the SIRIUS 3RV2 series being the recommended successor. However, its enduring design and protective features continue to make it a valuable component for safeguarding motors against overload and short-circuit events in industrial settings.