What it is and what the ratings mean
The Siemens SENTRON 5SL6302-7RC is a 3-pole miniature circuit breaker (MCB) rated at 2 A with a C tripping characteristic. It breaks fault currents up to 7.5 kA per EN 60898 at its rated AC voltage of 415 V. The C curve means the magnetic trip activates at 5 to 10 times rated current — it's sized for moderate inrush loads like small motor starters or lighting panels where you need to ride through the initial surge without nuisance tripping.
Where it fits and how it mounts
Snaps onto a standard DIN rail — occupies 3 modular width units (54 mm total). Depth is 76 mm, installation depth 70 mm. Mounts in any position, so you can lay it sideways in a tight gland plate area if you've got to. IP20 with conductors connected, which is standard for enclosed panel gear. Overvoltage category III, pollution degree 2 — that's your typical distribution board inside a dry building.
What else to know for the panel
Accepts supplementary devices (auxiliary contacts, shunt trips, etc.) if you need remote signaling or undervoltage release. Halogen-free and silicon-free construction — relevant if the panel sits in a clean room or near sensitive electronics where outgassing matters. Sealable, so you can lock out the toggle for lockout/tagout compliance. Power loss is 1.25 W per pole at rated current in hot operating state — keep that in mind for thermal buildup in a densely packed enclosure.