Square D T221N is a two-pole fusible disconnect switch rated for 30 A at 240 V, and it belongs to Square D's Series 1 family. This device provides a dedicated disconnection point for servicing or maintenance, using user-supplied fuses to interrupt fault current across both conductors of a 240 VAC circuit. Common applications include motor and industrial equipment circuits in residential or light commercial settings where a fixed disconnect is required by code or safety procedures.
