Description
The Schneider Electric (Square D) LADN31 Contact Block is used in auxiliary contacts in control circuits. It has a three normally open and one normally closed contact arrangement and can provide reliable signaling and control feedback. It is a snap-on component to the LC1D series contactors, and it increases contactor functionality without any wiring required. In HVAC systems, it is commonly used in control panels on a range of air handling units, compressors, and fan systems to indicate status, interlocks, or sequencing operates. Some major advantages are installation, high durability, and control flexibility.
