Allen-Bradley 70A86 AC Magnetic Operating Coil

Allen‑Bradley 70A86 AC Magnetic Operating Coil is an OEM coil for Bulletin 700-Series motor starters, Series K, Size 0. It accepts 120 VAC at 60 Hz or 110 VAC at 50 Hz, aligning with common North American control power. As the energizing coil for a Size 0 starter, it powers the magnetic core that closes the main contacts to drive small to mid‑sized motors in industrial panels. The 70A86 coil is specified for use with Size 0 contactors in the 700‑line family, providing a compact, standard‑voltage option for control wiring in both legacy systems and newer installations that reuse 700‑series components. Typical applications include machine automation lines, conveyors, pumps, and fans—equipment that relies on reliable, standard‑voltage AC control to start and stop motors. This coil embodies Allen‑Bradley’s approach to compatible control coils within the 700‑series ecosystem, offering predictable energization behavior when wired to standard AC control circuits. When selecting, verify the control voltage at the panel—110 V at 50 Hz or 120 V at 60 Hz—to ensure correct operation with the 70A86 coil and the associated Series K Size 0 starter.