The Siemens 3RV1021-1CA10 is a robust and reliable circuit breaker designed for motor protection. This three-pole device has an adjustable response current of 1.8 to 2.5 A and a maximum operating voltage of 690 V. It's part of the SIRIUS product line and is classified under trip class 10. The circuit breaker is designed to be mounted either by screw or snap-on to a 35 mm standard mounting rail according to DIN EN 50022. It's also designed to withstand a surge voltage resistance of up to 6,000 V and has a mechanical service life of 100,000 switching cycles. The 3RV1021-1CA10 is not just about performance, it's also about safety. It's finger-safe, providing an extra layer of protection during operation. This Siemens circuit breaker is a perfect choice for those seeking a high-quality, durable and safe solution for motor protection.