SQUARE D 140M-C7S-BN-1A Magnetic Starter

SQUARE 140M-C7S-BN-1A Magnetic Starter is a compact motor starter and protector built around Rockwell Automation’s Bulletin 140M motor-protector platform, designed to start and safeguard a 7.5 HP air compressor motor on a 208–240 V single-phase supply. It combines adjustable thermal overload protection with a fixed magnetic trip to guard against overloads and short circuits, helping prevent motor damage in demanding environments. The unit provides local motor control in a single, integrated package, simplifying installation in small control panels and enclosures. Typical applications include air compressors and other small to mid-size motors in workshops, manufacturing floors, and maintenance stops where reliable protection and straightforward wiring are valued. Key features include a 7.5 HP rating at 208–240 VAC and single-phase operation, with an adjustable overload mechanism to tailor protection to the motor and operating conditions, plus a magnetic short-circuit protection function for rapid shutdown in fault events. This starter is part of the longstanding 140M family, known for dependable motor protection in starter circuits and for enabling cohesive integration with compatible control components within a compact footprint.