Siemens 5SL6204-7RC — 4 A, 2-pole, C-curve MCB
The Siemens 5SL6204-7RC is a SENTRON miniature circuit breaker rated 4 A with a C tripping characteristic, 2-pole design, and a 7.5 kA breaking capacity per EN 60898 at 415 V AC.
The 7.5 kA rating per EN 60898 at 415 V AC defines the maximum prospective fault current this MCB can safely interrupt under standard conditions. In a panel with mixed loads, the C-curve avoids nuisance trips from brief starting currents that a B-curve would catch. At 1.3 W power loss per pole in hot operating state at rated current, the thermal contribution to the enclosure is modest — two poles dissipate 2.6 W total. In a densely packed DIN-rail enclosure with multiple MCBs, this keeps the internal temperature rise manageable without forced ventilation.
DIN-rail fit and modular accessories
Supplementary devices such as shunt trips, undervoltage releases, or auxiliary contacts can be installed on the 5SL6204-7RC (Product Extension Installable Supplementary Devices = Yes). This allows remote tripping or status feedback without replacing the base MCB.
The SENTRON 5SL series is a current-generation platform from Siemens. No successor order code has been announced, and the part carries the full complement of IEC/EN approvals typical for European-distribution-board components.