McDonnell & Miller 51-2-HD Control 30067439-890 The Schneider Electric (Square D)

The Schneider Electric (Square D) LC1D18G7 Contactor is a high-performance 3-pole IEC contactor engineered for demanding motor control and resistive load applications

The integrated LCDI protection circuit continuously monitors current balance across the 12 AWG conductors

The low limit adjustment ranges from 2 psi above to 1 psi below supply pressure

Common Questions: Will this work with any 5

High-quality HVAC ventilation component ensures long-term operational reliability in diverse climates

McDonnell & Miller 51-2-HD Control 30067439-890 The Schneider Electric (Square D)The McDonnell & Miller 51 2 HD is a heavy duty head mechanism only (Part Number 135100) designed specifically for field replacement on Series 51 2 mechanical water feeders. This unit is engineered for low pressure steam and hot water boiler applications, supporting systems with a maximum vessel pressure of 35 PSI. As a specialized low water cut off (LWCO) component, it features a snap acting SPDT switch that provides simultaneous feed control and