What this SIRIUS 3RA2 direct starter packs — and what it skips
The 3RA2110-1AD15-1AP6 is a Siemens SIRIUS non-fused motor starter — a direct starter that combines a contactor and a thermal overload relay in one Size S00 package, ready to snap onto a 60 mm busbar system without an external fuse holder. It ships as a wired assembly: the supplied contactor is a 3RT2015-1AP61, the link module is 3RA1921-1DA00, and the busbar adapter is 8US1251-5DS10 — so the BOM line is one order code, not three separate picks.
AC-3 duty ceiling and motor sizing across voltages
Rated maximum 690 V in AC-3 duty, so it switches motor loads at 400 V, 480 V, or 600 V line without derating the switching capacity — the contactor's arc extinction handles the full line voltage. At 230 V it's rated 0.1 hp — this starter is sized for fractional-horsepower to about 1.5 hp motors at typical North American line voltages, not for larger loads that would need a Size S2 or S3 frame.
Panel fit — dimensions, mounting, and clearances
Width is 45 mm, depth 155.1 mm, height 200 mm — the 45 mm width matches a standard 45 mm DIN-rail footprint, but the mounting method is snap-on onto 60 mm busbar systems, not a DIN rail, so plan the busbar layout accordingly. Clearance requirements: 20 mm upwards, 10 mm downwards, 9 mm at the side, and zero forwards or backwards — the tight side clearance means adjacent starters can pack closely on the busbar without derating. Mounting position is vertical only — horizontal mounting would change the thermal overload trip curve and is not supported.
Environmental limits and pollution rating
Operating temperature range is -20 to +60 °C, storage -50 to +80 °C, transport -55 to +80 °C — the -20 °C floor means it's usable in unheated enclosures in most temperate climates, but not in deep-freeze or arctic installations without enclosure heating. Degree of pollution 3 means the starter is rated for conductive pollution or dry non-conductive pollution that becomes conductive due to condensation — typical for industrial control panels without climate control, but not for clean-room or hermetically sealed environments.
Coil voltage tolerance and line frequency
The control coil is rated 187-242 V at 50 Hz and 192-264 V at 60 Hz — that's a ±10% tolerance band around the nominal 230 V control supply, so a sagging control transformer or a weak UPS output won't drop the contactor out prematurely. Operating frequency is 50-60 Hz, covering both 50 Hz European and 60 Hz North American line supplies with the same coil — no frequency-specific variant needed.
No stock-holding claim — quoted per order.