The 5SL4504-6: The B-curve trips between 3 and 5 times rated current (12–20 A for this 4 A unit), making it the right choice for resistive and general-purpose loads in residential and light commercial panels — not for motor or transformer inrush where a C or D curve would be needed. Rated voltage is 230 V AC for the single-phase circuit, with a maximum DC voltage rating of 72 V if used on a DC supply (though the B-curve and 10 kA rating are AC-specific). Mechanical endurance is 10,000 switching cycles typical — adequate for a distribution board where the breaker is operated infrequently (isolation or maintenance), not for a switch-disconnector role in daily use.
Mounting position is any orientation — no derating required for horizontal or inverted mounting. IP20 with connected conductors, so it belongs inside a closed enclosure, not in a wet or washdown location.