High-speed DC circuit-breaker for Rolling Stock Type UR15-44TCS

The UR15-44TCs is a dc high-speed limiting circuitbreaker with natural cooling, trip free, single pole, polarized, electrically controlled and direct over-current instantaneous release. The UR15-44TCs is delivered with a metal protecting enclosure IP54 for roof or underframe mounting on Electric Multiple Units running on 3000 Vdc network. The UR15-44TCs circuit-breaker is primarily designed to protect main and auxiliary circuits of 3000 Vdc traction vehicles against short-circuits and overload currents, as well as to connect or isolate these circuits to and from the vehicle’s power supply. Applications...

Technical data MAIN HIGH VOLTAGE CIRCUIT Rated operational voltage Ue [Vac] 3300 Rated insulation voltage Ui [Vdc] 4800 Conventional free air thermal current Ith [A] 500 Rated short-circuit making and breaking capacity / Time constant Rated power-frequency withstand voltage (50 Hz, 1 mn) U50 - between main contacts open [kVrms] 9.2 - between main contacts closed & earth/low voltage circuits [kVrms] 11.6 Direct over-current instantaneous release [kA] 0.6 - 0.9 (1) For higher voltage, please contact Secheron (2) At Tamb=+40°C; test carried out with 2 high voltage cables of 150 mm per main connection...

Main dimensions Weight: 185 kg (± 5%) • The DIN-ISO 2768-1 coarse tolerances are applied to these dimensions. • All dimensions are in mm. • The maximum allowed flatness deviation of the support frame is 2 mm, but with a maximum of 0.7 mm between the 150 mm apart holes. • HV connections: M12 bolts • Earth connection: M10 nut. 1232 Maintenance doors Fixation rails Space needed for maintenance operations Spaces needed to remove the doors. ** Minimum spaces for working purpose. *** Space needed to remove the complete arc chute/circuit-breaker assembly. Sécheron SA Rue du Pré-Bouvier 25 1217 Meyrin...