75 inch water column switch replaces previous iterations

Compatible with various brands under the Nortek umbrella

What electrical loads is this switch rated for

making it a "truck stock" essential

Is this compatible with Schneider Electric or Barber-Colman systems

Resideo DP2040B5003 Contactor 75 inch water column switchThe Resideo DP2040B5003 PowerPro Definite Purpose Contactor is a heavy duty 2 pole HVAC contactor engineered for reliable switching in air conditioning, refrigeration, and heating systems. This 40 amp contactor serves as the direct replacement for the legacy DP2040B5002, featuring a 120V coil and a DPST contact configuration. Designed for high cycle applications, it utilizes silver cadmium oxide contacts to ensure superior conductivity and minimize