The Siemens 5SL6420-6CC is a 4-pole miniature circuit breaker rated 400 V with a 6 kA interrupting capacity, B-curve trip characteristic, and 20 A current rating. It sits in the Basic Devices product family and carries the group code P310. The B-curve trips between 3 and 5 times rated current, making it a standard choice for residential and light commercial final circuits — lighting, socket outlets, and general-purpose loads where inrush is moderate. The 6 kA breaking capacity at 400 V covers most distribution board fault levels in European-style TN and TT systems. DIN-rail mounted, this 4-pole unit occupies four module widths in the enclosure. The product class B designation means return is restricted — coordinate with your Siemens channel partner on any RMA before ordering.
Lifecycle and compliance
RoHS compliant since 01 June 2013. REACH candidate-list information is available on request. Export control is AL: N / ECCN: N — no license required for standard commercial shipments.