Product overview and key ratings
The Siemens 5SV9316-7PK20 is a SENTRON RCD-operated circuit breaker (RCBO) combining overcurrent and residual current protection in a single 2-pole, 18 mm wide module. It is rated 20 A at 30 °C with a 30 mA residual tripping current, Type A (pulsating DC and AC sensitive). The breaking capacity is 6 kA per both EN 60898 and IEC 60947-2, which means it can safely interrupt fault currents up to that level without upstream device coordination issues in a standard distribution board. The tripping characteristic is C (magnetic release between 5 and 10 times In), suited for mixed resistive and moderate inductive loads like small motor circuits or lighting banks.
Installation and environmental considerations
Mounts on DIN rail in any position; the 18 mm width occupies one modular unit. Installation depth is 70 mm, with an overall depth of 77 mm including the housing. The IP20 protection class applies when installed in a distribution board with connected conductors — suitable for dry indoor enclosures, not for washdown or outdoor exposure. Rated for ambient temperatures from -40 °C to 75 °C, with a derating curve: 20 A at 30 °C, 19 A at 40 °C, 18.4 A at 45 °C, 18 A at 50 °C, and 17.4 A at 55 °C. The supply connection is from below, and the device is touch-protected per the listed feature.