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Boltswitch VLB349G4-MST - Class L 1600A 240V Fusible Switch

Boltswitch
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Boltswitch VLB349G4-MST is a heavy-duty bolted pressure switch designed for high-current protection in industrial power distribution systems. This 3-phase, 3-pole fusible switch is rated for 240V AC and 1600A, with a 200kA interrupting capacity at 240V, and features a motorized shunt trip operator for remote trip capability. The unit weighs 250 lb, utilizes Class L fuses, and is configured for single bottom-feed mounting within a NEMA 1 enclosure, compatible with SGHA frames. It meets UL 977 standards as a fused power circuit device, ensuring reliable performance in demanding environments. Typical applications include switchboards and electrical distribution systems requiring high fault current protection and remote operation.

Key Features & Specifications
  • Type: VLB
  • Switch Style: Fusible
  • Fuse Class: L
  • Current Rating: 1600A
  • Voltage Rating: 240V AC
  • Poles: 3
  • Phase: 3
  • Configuration: Single
  • AIC Rating: 200kA@240V
  • Nema Rating: 1
  • Weight: 250 lb
  • Compatible Frames: SGHA
  • Operator: Motorized Shunt Trip (MST)
  • Mounting: Bottom Feed
  • Contact Type: Bolted Pressure Contacts
  • Load Break Design: Yes
  • Quick-Make Quick-Break: Yes
  • UL Listed: File No. E44498