Square D D325N is a heavy-duty fusible safety switch designed for providing reliable circuit isolation and overcurrent protection in industrial power distribution systems. It features a 400A current rating and a 240V AC voltage rating, housed within a robust NEMA 1 enclosure measuring 1146.05 mm H x 631.95 mm W x 225.55 mm D and weighing 115 lb. The switch is UL listed and engineered for a high 100kA interrupting capacity at 240V, ensuring compliance with critical safety standards for protecting electrical equipment. Its three-pole, single-configuration design with Class R fuse compatibility is typically applied in motor control centers, industrial machinery, and main service disconnects where secure isolation is required.
Key Features & Specifications
Type: Fusible Safety Disconnect Switch, Series E, Type D
Voltage Rating: 240V AC
Current Rating: 400A
Dimensions: 1146.05 mm H x 631.95 mm W x 225.55 mm D (45.12 in x 24.88 in x 8.88 in)
Standards: UL Listed
Applications: Main service disconnects, motor control centers, industrial power distribution
Switch Style: Fusible
Configuration: Single
Poles: 3
Phase: 3
AIC Rating: 100kA @ 240V
Fuse Class: R
NEMA Rating: NEMA 1
Wire Size: AWG 1/0 to 600 kcmil Aluminum/Copper, AWG 1/0 to 300 kcmil Aluminum/Copper