Square D 2183-S44-Q30B is a replacement AC magnetic coil for Square D size 4 starters (2183-S44 family). It is rated for 110 V at 50 Hz or 120 V at 60 Hz, making it compatible with two common power-frequency environments. The coil carries the Q30B suffix and is intended for use with Square D 2183 size-4 starters in motor-control panels and industrial automation where the 2183-S44 series is installed. When energized, it actuates the starter contacts to power connected motors or other loads, serving as the control element in typical industrial electrical control circuits.
