The Siemens 5SV6016-7MC20 is an arc-fault detection device (AFDD) and miniature circuit breaker (MCB) combined into a single 1+N pole unit. It carries a C-curve trip characteristic at 20 A rated current, with a 6 kA breaking capacity at AC 230 V. The unit also includes measuring and communication functions, making it suitable for monitored final circuits in residential or light commercial distribution boards.
What the ratings mean for fit
The C-curve (20 A) means the magnetic trip threshold is 5–10× In, so it tolerates motor inrush and capacitive loads better than a B-curve but still clears short circuits quickly. The 6 kA breaking capacity at 230 V AC is the maximum fault current the device can safely interrupt — adequate for most domestic and small commercial final circuits where the prospective short-circuit current stays under that level. The 1+N pole configuration switches the line conductor and provides neutral disconnection, which is standard for single-phase final circuits in many European wiring regulations. The integrated AFDD detects series and parallel arc faults (e.g., damaged cables, loose connections) and trips the MCB section, adding a layer of fire protection that a standalone MCB cannot provide. The measuring and communication capability allows integration into a building management or energy-monitoring system, though the specific protocol is not detailed in this listing.
Deployment context
This unit snaps onto a standard DIN rail inside a distribution board or sub-distribution panel. The 1+N pole width (typically 2 modules) fits alongside other DIN-rail components such as RCCBs, surge arrestors, and busbar systems. The radio approval note in the description means the communication interface may use wireless frequencies; check the certificate list for country-specific compliance before installation.