The Siemens 5SL4150-7CC is a 1-pole miniature circuit breaker rated 50 A with a C-trip curve and a 10 kA breaking capacity at 230/400 V. It belongs to the 5SL4 series of Basic Devices, designed for panelboard and distribution board installation protecting branch circuits against overload and short circuit. The C-curve characteristic means the magnetic trip operates between 5 and 10 times rated current — 250 to 500 A — making it suitable for moderate inrush loads like small motor starters, lighting banks, and general-purpose socket circuits where the start-up surge is higher than a B-curve would tolerate but not as high as a D-curve requires. Rated 230/400 V AC, the 10 kA breaking capacity (Icn per IEC 60898-1) covers most commercial and light industrial fault levels. In a 400 V three-phase panel, a single-pole unit protects one phase leg; for line-to-line or three-phase loads, match with 2-pole or 3-pole 5SL4 siblings in the same rail.
Sourcing and lifecycle
Production status is active per Siemens lifecycle data — the 5SL4150-7CC remains in current manufacture with no announced end-of-life. Sourced to order through independent distribution; availability and current pricing confirmed at RFQ. Export control classification is AL: N / ECCN: N, meaning no special licensing is required for cross-border shipment under normal commercial terms. Product class B indicates return is restricted — coordinate with your Siemens channel partner before any RMA.
Compliance and documentation
RoHS compliant since 01 June 2013. REACH Article 33 disclosure: the part contains lead (CAS 7439-92-1) above 0.1% w/w in the candidate list — this is typical for tin-lead solder joints in the internal bimetal strip and does not affect normal handling or installation. Group code P310 and product group 3823 are Siemens internal classification fields used for BOM structuring and spare-parts cataloguing — useful when cross-referencing in Siemens Industry Mall or your ERP system.