3AH3305-2RE44-0EB2-Z F20 SIEMENS

The 3AH3305-2RE44-0EB2-Z F20 vacuum circuit breaker from Siemens is designed for medium-voltage applications, specifically operating at 36kV. It features a pole-center distance of 350mm and a breaking capacity of 31.5kA, suitable for interrupting fault currents in electrical networks. The continuous current rating is 1250A, allowing it to handle substantial load currents under normal operating conditions. Equipped with an EK operating mechanism, this circuit breaker ensures reliable and consistent switching performance. Integrated secondary equipment includes an operating cycle counter for monitoring breaker usage and a breaker tripping signal for remote indication of fault events. Position switches provide signals for "closing spring charged," enhancing monitoring capabilities. The closing solenoid, complete with varistor circuitry in the secondary circuit, operates at DC 110V, ensuring controlled and efficient closing. It includes one shunt release with a voltage of DC 110V, and it lacks a second and third release. The operating mechanism also functions at DC 110V, and auxiliary switch configuration includes 12 normally open (NO) and 12 normally closed (NC) contacts. Secondary connections are facilitated via a 64-pole plug connector, and mechanical interlocking is incorporated for enhanced safety. The package includes a rating plate and operating instructions in English.