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ACP Electrical Fittings STB4538L - Safety Switch 600V 100A NEMA 3R

ACP Electrical Fittings
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ACP Electrical Fittings STB4538L is a heavy-duty industrial safety switch designed for reliable circuit disconnection and equipment protection in commercial and industrial power distribution systems. This unit is rated for 600 volts AC and 100 amperes continuous current, providing robust overcurrent protection for branch circuits and motor loads. Constructed with a NEMA 3R rainproof enclosure made from galvanized steel, the switch measures approximately 10 inches wide by 14 inches high by 6 inches deep and weighs 5.19 pounds, featuring a visible blade design for positive load break indication. It complies with UL 98 and CSA C22.2 standards for enclosed switches, ensuring safe operation in wet or outdoor locations. Typical applications include service entrance disconnects, HVAC equipment isolation, and machinery control panels in factories, warehouses, and commercial buildings.

Key Features & Specifications
  • Type: Heavy-duty safety switch, visible blade, non-fusible, NEMA 3R rainproof enclosure, galvanized steel construction
  • Voltage Rating: 600 VAC
  • Current Rating: 100 A
  • Dimensions: Approximately 10 x 14 x 6 inches
  • Standards: UL 98, CSA C22.2
  • Applications: Service entrance disconnects, HVAC isolation, machinery control, industrial power distribution
  • Switch Type: Heavy-duty safety switch
  • Configuration: 2-pole, 3-wire
  • Enclosure: NEMA 3R rainproof
  • Weight: 5.19 lb


Product Identification
  • UPC: 78138140363
  • GTIN: 00781381403634