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

Siemens
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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