Square D 2510FO4 manual motor starter, 2 pole, up to 1HP, 16 amperes maximum at 277 VAC, key operated, melting alloy overload relay, with no pilot light, open style enclosure. Square D 2510 Type F fractional motor manual starters provide overload protection and manual On-Off control for small single phase AC motors. Open style starter fits industry standard single-gang switch boxes for direct mounting in a wall or machine using any standard cover plate with a standard single cutout. Overload heater element is ordered separately to match motor data. With no pilot light. Units are UL Recognized, CSA Certified and CE Marked for global applications. Fractional Motor Starters. Designed for fractional single phase motors up to 1 HP. Provides easy manual On-Off control of small motors. Provide melting alloy overload protection for motors. Intended for industrial and commercial applications. Enclosed or open versions to suit most application environments. Can be easily installed. UL, CSA and CE approvals.