Product Details
This circuit breaker features a modular design that integrates both thermal overload protection and electromagnetic short-circuit protection. It offers precise tripping characteristics to effectively prevent motor damage caused by overload or phase failure. Its compact size allows for high-density installation in limited spaces. The breaker can be equipped with a variety of accessories such as auxiliary contacts, fault signal contacts, undervoltage releases, and shunt trips to meet complex control requirements. The manual operator includes clear “I/O” (On/Off) indication.
Product Parameters
| Parameter | Details |
| Model | 3RV2021-0JA10 |
| Series | SIRIUS 3RV2 |
| Number of Poles | 3-Pole |
| Rated Operational Current Ie | 18 A (at 40°C) |
| Rated Insulation Voltage Ui | 690 V AC |
| Rated Impulse Withstand Voltage Uimp | 6 kV |
| Ultimate Short-Circuit Breaking Capacity Icu (415V AC) | 100 kA |
| Motor Protection Range | Up to 7.5 kW (at 400V AC) |
| Tripping Characteristics | Thermal-magnetic, adjustable overload (Ir), fixed magnetic short-circuit (Im) |
| Mounting | Standard DIN 35mm rail mounting, front or rear connection possible |
| Accessory Support | Auxiliary contacts, fault signal contacts, undervoltage/shunt releases |
The 3RV2021-0JA10 is a motor circuit breaker from the Siemens SIRIUS 3RV2 series, primarily used for line and motor protection, providing overload and short-circuit protection. It is capable of directly starting motors with a rated power of up to 7.5 kW, serving as a critical protective device in motor control centers (MCC) and switchgear.
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