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ABB SB421RG-AM - Fusible 30A 240V (3-Phase 4-Wire)

ABB
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ABB SB421RG-AM is a 30A, 240V, 3-phase 4-wire fusible bus plug from the Spectra Series, designed for plug-in busway applications to provide overcurrent protection. It features a QMR interrupter switch with Class H and R fuse clips, a 200kA interrupting capacity at 240VAC, and supports up to 4 wires. This unit weighs 20 lb and utilizes a plug-in mounting type for straightforward installation. It meets UL and industry standards for safety and performance. Typical applications include industrial power distribution and branch circuit protection in busway systems.

Key Features & Specifications
  • Type: Fusible
  • Family: Spectra Series
  • Type: SB
  • Weight: 20 lb
  • Fuse Class: H, R
  • Wire: 4
  • Voltage Rating: 240V
  • AIC rating: 200kA@240V
  • Phase: 3
  • Current Rating: 30A
  • Amperage: 30 Amps
  • Voltage: 240 Volts AC
  • Poles: 3 Pole, 4 Wire with Ground
  • Mounting Type: Plug-In
  • Interrupt Rating: 200 kAIC
  • Fuse Type: Class H Fuse Clips
  • Switch Type: QMR Interrupter Switch
  • Application: Fusible Bus Plug for Busway
  • Certifications: Meets UL and industry standards