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General Electric SB421NP - Fusible 30A 240V Bus Plug

General Electric
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⚡ Product Branding Information

Some General Electric products may now ship with ABB branding due to ABB’s acquisition of GE Industrial Solutions.

Depending on the manufacturing date or production batch, the item or packaging may display either GE or ABB branding.

Unless otherwise noted, these products are considered equivalent in form, fit, function, and specifications.

Please contact our team before placing your order if brand labeling or packaging is critical for your application.

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General Electric SB421NP is a fusible bus plug designed for primary circuit protection in industrial power distribution systems. It operates at 240V AC with a 30A current rating and delivers a 200kA interrupting capacity at 240V AC, supporting 3-phase, 4-wire configurations. The unit weighs 35 lb and features a switch-operated, fusible design compatible with Class H and R fuses for secure mounting on Spectra Series busway systems. This plug is UL Listed, meeting rigorous safety and performance standards for commercial and industrial environments. Typical applications include branch circuit protection in manufacturing plants, data centers, and large-scale commercial facilities requiring reliable power distribution.

Key Features & Specifications
  • Manufacturer: General Electric
  • Item Subcategory: Fusible
  • Family: Spectra
  • Type: SB
  • Weight: 35 lb
  • Fuse Class: H, R
  • Wire: 4
  • Voltage Rating: 240V
  • AIC rating: 200kA@240V
  • Phase: 3
  • Current Rating: 30A
  • Part Number: SB421NP
  • Amperage: 30A
  • Voltage: 240V AC
  • Poles: 3
  • Phase/Wire: 3 Phase, 4 Wire
  • Mounting Type: Busway Plug-In
  • Series/Frame: Spectra Series
  • Fusible: Yes
  • Interrupt Rating: 200kA at 240V AC
  • Certifications: UL Listed