Siemens JN421 - Fusible Safety Switch 240V/30A (100kA AIC @240V)

Siemens JN421 is a Vacu-Break fusible safety switch designed for industrial power distribution protection. This 3-phase disconnect features a 240V AC voltage rating and 30A current capacity with a 100kA interrupting rating at 240V for reliable circuit isolation. The rugged NEMA 1 enclosure houses three R-class fuse poles in a single-configuration design, weighing 8 lb for durable installation. Compliant with industrial safety standards, it integrates with PGP frames for motor control and power distribution applications.

Key Features & Specifications

• Type: Fusible safety switch, Vacu-Break technology
• Voltage Rating: 240V AC
• Current Rating: 30A
• Configuration: Single
• Poles: 3
• AIC Rating: 100kA@240V
• Fuse Class: R
• NEMA Rating: 1
• Phase: 3
• Compatible Frames: PGP
• Weight: 8 lb
• Switch Style: Fusible disconnect