It is rated for AC-1 utilisation category, meaning it is designed for switching resistive loads — the rating that governs its thermal current capacity, not motor starting. The power circuit carries an average impedance of 1.5 mOhm at Ith 60 A, 50 Hz, and dissipates 5.4 W per pole under AC-1 load. Rated making and breaking capacity is 800 A at 440 V, per IEC 60947. Electrical durability is 1.4 million cycles at 60 A AC-1, Ue ≤ 440 V; mechanical durability is 10 million cycles. The contactor is rated for up to 3600 operating cycles per hour at 60 °C.
The 72 VDC coil includes a built-in bidirectional peak limiting diode suppressor — no external flyback diode needed across the coil terminals. Inrush power is 22 W at 20 °C; the coil time constant is 75 ms. Opening time spans 4 to 19 ms, closing time 12 to 26 ms. Control circuit terminals accept lugs or ring terminals with an 8 mm outer diameter, torqued to 1.7 N·m on M3.5 screws (flathead or Philips No 2).
Mounting, dimensions, and environment
The contactor measures 85 mm wide, 127 mm high, and 182 mm deep. It mounts on a rail or plate. Fire resistance is 850 °C per IEC 60695-2-1; flame retardance is V1 per UL 94.
Certified to CSA C22.2 No 14, EN 60947-4-1, EN 60947-5-1, IEC 60947-4-1, IEC 60947-5-1, and UL 60947-4-1. The safety reliability level is expressed as B10d = 1,369,863 cycles with nominal load and B10d = 20,000,000 cycles with mechanical load, per EN/ISO 13849-1.