Siemens SN421 - Fusible Disconnect Switch 240V 30A (200kA AIC @240V)

Siemens SN421 is a fusible safety disconnect switch designed for secure electrical isolation in industrial power distribution systems. Rated for 240V AC operation with a 30A current capacity, this three-phase switch features a 200kA interrupting rating at 240V for robust short-circuit protection. The NEMA 1-rated enclosure houses Class R fuse compatibility and a single-configuration design with three poles, engineered for PJP frame compatibility. Compliant with industrial safety standards, it serves critical applications in motor control centers, HVAC systems, and heavy machinery power management.

Key Features & Specifications

• Type: Fusible safety disconnect switch with NEMA 1 enclosure
• Voltage Rating: 240V AC
• Current Rating: 30A
• Configuration: Single
• Poles: 3
• Phase: 3
• AIC Rating: 200kA@240V
• Fuse Class: R
• Wire Size: 4 AWG
• Compatible Frames: PJP
• Weight: 20 lb