Mounts by screws to the bottom of a compatible circuit breaker (1P+N form factor), with a connection pitch of 9 mm between phase and neutral terminals. The sensor element measures 44.5 mm deep by 18 mm wide by 20 mm high; the base unit adds 28 mm depth and 8 mm height — total stack fits inside a standard switchboard enclosure without crowding adjacent poles. Wiring accepts 1.5…16 mm² rigid or 1.5…2.5 mm² stranded cable, with IP20 finger-safe protection and IK05 impact resistance for panel-side handling.
Standards compliance includes IEC 61557-12 (measuring relays and protection equipment), IEC 61010-1 and IEC 61010-2-030 (safety for electrical measurement and control equipment), IEC 61326-1 (EMC for measurement, control, and laboratory equipment), and ETSI EN 301 489-1 (EMC for radio equipment).