SIRIUS direct starter for 60 mm busbar panels
The Siemens 3RA2125-4EH27-0FB4 is a SIRIUS direct-on-line starter in Size S0, designed to snap onto 60 mm busbar systems — a common layout in compact motor control centres where panel space is tight. It delivers 15 kW at 400 V AC-3 (max 690 V) with a Class 10 thermal bimetal overload relay, so it handles standard induction motor starting without nuisance tripping on moderate inertia loads.
Termination and mounting fit
Both main and auxiliary/control circuits use spring-loaded terminals — no screw torque checks, just strip and push for solid or ferruled stranded wire. Mounting is vertical only, with 45 mm width and 165 mm depth, leaving 50 mm clearance above and 20 mm at the sides for airflow and wiring access.
Active production — sourcing posture
We source it against your BOM quantity and confirm lead time and pricing at quote — no minimums beyond the manufacturer's standard MOQ.