Honeywell Commercial MS4103A1130 ActuatorHoneywell MS4103A1130 is a 120V two position SPST spring return direct coupled actuator with a torque rating of 27 lb in (3 Nm), built for reliable control in commercial HVAC, dampers, and industrial automation. Its compact, direct coupled design delivers smooth, backlash free motion and precise positioning in tight spaces, while the durable enclosure protects against dust and moisture in busy environments. Designed for easy installation on standard

CSA approved for use in Canada and US

and reliable switch operation across cycles

or rooftop configurations

Durable construction: Rugged housing resists shock

non-invasive service

Precise limit-switch actuation with repeatable performance

clear display (5 in²) and broad temperature range (32–105°F

Easy swap-in replacement for quick service

the B1370772SP integrates with compatible control boards to deliver consistent performance

Engineered to match the original specifications

and extend compressor life—keeping heat pumps performing at peak efficiency across seasons

Type: Direct Acting (Heating) / Reverse Acting (Cooling)