S0 frame, 3 hp — what it means for the panel
The 3RT2025-2AK60-ZW96: That 3 hp figure is the motor-switching capacity you design around — it tells you the contactor handles a typical 2.2 kW three-phase motor at 230 V without welding the main contacts on inrush. That means it fits into tight retrofit enclosures where the rail orientation is already set.
Physical fit and clearance
Dimensions are 97 mm deep, 45 mm wide, 102 mm tall — the S0 footprint. If you're squeezing it into an existing panel, those are the minimum air gaps for heat dissipation and arc containment. The coil connection uses spring-type terminals — no screw tightening there, which saves a few seconds per wire on a multi-contactor panel build.
Duty cycle and endurance
Mechanical endurance is 10 million operations typical — that's the contactor's life before the armature wears out, not the contacts. Switching frequency at AC-3 duty (motor switching) is 1,000 operations per hour maximum; at AC-4 (plugging/reversing) it drops to 300 per hour. If your application cycles faster than that, the contactor overheats internally. The arcing time is a tight 10 ms, and the operating time at AC is 4 to 16 ms — fast enough for most motor starter coordination schemes.
Auxiliary contact ratings
An auxiliary switch is included. These are the make/break capacities for the auxiliary contacts — use them to size your PLC input or relay coil draw.