SIEMENS Industrial Products SIEMENS MINIATURE CIRCUIT BREAKER May 5, 2015 admin 5SM, 5SQ, 5SX, MINIATURE CIRCUIT BREAKER, SIEMENS, SIEMENS Industrial Products, SIEMENS MINIATURE CIRCUIT BREAKER SIEMENS MINIATURE CIRCUIT BREAKER 5SQ, 5SX, 5SM Short Circuit and overload protection – Standard IEC60898, IEC60947-2, DIN VDE 0641, EN 60 89 – Service life: average 20,000 operations at rated load