McDonnell & Miller 751P-MT-SP-120 Control R-410A This component serves as a

This component serves as a direct professional-grade replacement for the 3ARR3MARS551

This model features a manual reset mechanism

and water applications

The inclusion of gold-plated contacts ensures high conductivity and reliable signal switching in low-current dry circuit applications

McDonnell & Miller 751P-MT-SP-120 Control R-410A This component serves as aThe McDonnell & Miller 751P MT SP 120 (Part Number 176295) is a heavy duty 120Vac manual reset low water cut off engineered for precise level monitoring in commercial and industrial hot water and steam boilers. As a CSD 1 compliant safety control, this unit is designed to interrupt the burner circuit the moment a low water condition is detected, requiring a manual intervention to resume operation once safe levels are restored. This specific 751P