The 24 VDC coil is controlled by a PLC or relay output; the spring-type terminals on the coil save wiring time compared to screw terminals — no re-torquing during commissioning. The main contacts are rated for 18 A through 8 A depending on the duty cycle (AC-3 motor switching). At 230 V it handles up to 3 hp motor loads. Switching frequency is rated at 1,000 operations per hour for AC-1, AC-2, AC-3, and AC-3e duty, and 300 operations per hour for the more demanding AC-4 duty (plugging / inching). This means the contactor can handle frequent starts and stops in a production line without exceeding thermal limits.
The spring-type terminals accept solid or stranded conductors from 1 to 10 mm², and fine-stranded (ferruled) conductors 2x (0.5 to 2.5 mm²).
Environmental and Electrical Ratings
The coil holds at 24 VDC nominal; the opening time at DC is 15 to 18 ms, and the arcing time is 10 ms. These timing specs matter for coordination with upstream protective devices in a motor control center. Auxiliary contact ratings (for a separate block, not included) are provided for reference: 6 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. These are the maximum continuous currents the auxiliary contacts can carry at those voltages.