Circuit breaker size S2 for starter combinations Rated current 52 A N-release 741 A Screw connection Increased switching capacity SIRIUS 3RV2 circuit breaker for starter combinations for safe protection of consumers in the event of a short circuit and for safe disconnection from the mains. The compact and climate-resistant circuit breakers are optimized for use in consumer feeders due to their low heat dissipation, of course also for IE3/IE4 motors and equally for switching direct current. Worldwide approvals (e.g. IEC and UL/CSA) and applications in potentially explosive applications (ATEX or IEC Ex) are a matter of course. Device variants are available for motor protection (also with overload relay function), system protection, short-circuit protection of starter combinations, transformer protection, as main and EMERGENCY STOP switches and for use in IT networks. They are available with screw or spring-loaded connections for a quick, maintenance-free and vibration-proof connection, and optionally with a built-in auxiliary switch. The comprehensive range of accessories, such as auxiliary switches, auxiliary releases, signaling switches, etc., is standardized for all sizes. The use of various power feed options, such as the associated SIRIUS 3RV29 feed system, significantly reduces the main circuit wiring. The 3RV2 circuit breakers replace the proven 3RV1 series. Simple, efficient, always up-to-date - the SIRIUS modular system.
| Property | Value |
| Number of poles: | 3 |
| Rated operating voltage: | 690 V |
| Rated operating power at AC-3, 230 V: | 15 kW |
| Rated operating power at AC-3, 400 V: | 22 kW |
| Rated continuous current Iu: | 52 A |
| Rated short-circuit breaking current Icu at 400 V, AC: | 100 kA |
| Phase failure sensitive: | no |
| Protection class (IP): | IP20 |
| Width: | 55 mm |
| With integrated auxiliary switch: | no |
| With integrated undervoltage release: | no |
| Height: | 140 mm |
| Depth: | 149 mm |
