Boltswitch L428-AST Bolted Pressure Switch (Fusible) - Essential Electric Supply
Boltswitch L428-AST Bolted Pressure Switch (Fusible) - Essential Electric Supply

Boltswitch L428-AST - Fusible Bolted Pressure Switch 1200A@240V (200kA AIC)

Boltswitch
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Boltswitch L428-AST is a fusible bolted pressure switch designed for high-current industrial power distribution systems. This L Series switch features a 240V voltage rating and 1200A current capacity, housed in a rugged NEMA 1 enclosure weighing 250 lb. The unit meets industry standards with a 200kA@240V AIC rating and THFK frame compatibility, engineered for three-phase applications. Typical applications include main power isolation and heavy-duty circuit protection in manufacturing plants and utility substations.

Key Features & Specifications
  • Type: Fusible bolted pressure switch (L Series) with 4 poles
  • Voltage Rating: 240V AC
  • Current Rating: 1200A
  • Configuration: Single
  • Phase: 3
  • AIC Rating: 200kA@240V
  • Fuse Class: L
  • NEMA Rating: 1
  • Compatible Frames: THFK
  • Weight: 250 lb
  • Switch Style: Fusible