Square D D221N is a fusible safety switch designed for providing a visible disconnect and overcurrent protection in industrial and commercial electrical systems. It is rated for 30A at 240V AC and features a 100kA interrupting capacity at 240V for robust short-circuit protection. The switch is constructed with a NEMA 1 enclosure measuring 234.95 mm H x 184.15 mm W x 92.20 mm D and weighs 4.191 lb, utilizing a 2-pole, single-phase configuration compatible with Class R fuses and RLF frames. It is UL listed and designed to accept wire sizes from #14 to #8 AWG for aluminum or copper conductors, making it suitable for applications such as motor control, HVAC equipment, and industrial machinery disconnects.
Key Features & Specifications
Type: Fusible safety disconnect switch, Series E, Type D
Voltage Rating: 240V AC
Current Rating: 30A
Configuration: Single
Poles: 2
Phase: 1
AIC Rating: 100kA @ 240V
Fuse Class: R
Compatible Frames: RLF
Wire Size: #14 to #8 AWG (Al/Cu)
Dimensions: 9.25 in (234.95 mm) H x 7.25 in (184.15 mm) W x 3.63 in (92.20 mm) D