3RV1021-0JA10

The Siemens 3RV1021-0JA10 motor protection circuit breaker offers essential safeguarding for motor circuits. This unit falls under the SIRIUS series and carries a size designation of SO. It incorporates a mechanical durability rating estimated at 100,000 cycles for its main contacts, ensuring longevity and robust performance.

Operating within an ambient temperature range between -20°C and +70°C, this circuit breaker can adapt to diverse environmental conditions. The overload release function is adjustable within the range of 0.7 to 1 A, making it responsive to varying load conditions. For short-circuit situations, a fixed non-delayed release setting is established at 13 A.

The device's rated operational voltage is capable of handling up to 690 V for both AC and DC applications. Under AC-3 usage at 400 V, it supports a rated operational current of 1 A. Referring to the breaking capacity, it can manage currents up to 100 kA across operational voltages of 400 V, 500 V, and 690 V.

Mounting this breaker is straightforward, utilizing screw or snap-on methods compatible with 35 mm DIN rails, according to EN 50022 standards. It features screw-type terminals in the main circuit, accommodating conductors with a cross-section ranging from 1 to 6 mm², as well as wire gauges from AWG 14 to 10. The front protection class is rated at IP20, denoting limited protection against solid objects but not moisture intrusion. Lastly, note that this unit does not support phase fault protection, which should be accounted for during installation and application.