Reversing starter for a 60 mm busbar panel
The 3RA2225-4CD27-0AK6 is a SIRIUS non-fused reversing motor starter in Size S0, meaning it integrates a reversing contactor pair and overload relay in one assembly for forward/reverse control of a three-phase motor without external interlocks. It snaps directly onto 60 mm busbar systems, so it lands in a panel without a separate DIN-rail adapter — the busbar carries both the mounting and the main power feed. The supplied contactor is a 3RT2027-1AK60, and the link module is 3RA2921-1AA00 — these are the factory-matched components, not field-assembled parts.
Trip Class 10 means the overload relay trips within 10 seconds at 600% of the set current, which protects standard squirrel-cage motors during a stall or jam without nuisance tripping on a normal start.
Clearance and mounting constraints
Mounting position is vertical only — horizontal installation changes the thermal characteristics of the overload relay and is not permitted. Minimum clearances: 30 mm upward, 10 mm forward, 10 mm downward, and 9 mm at the side; backward clearance is 0 mm, so the unit can sit flush against a backplate. Dimensions are 155 mm deep, 90 mm wide, and 260 mm tall — the width is the tightest constraint in a multi-starter lineup on 60 mm busbars.
Lifecycle and sourcing posture
RoHS compliance date is 03/01/2017, so it meets the EU substance restrictions for current equipment.