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Square D Heavy Duty Three Phase Fused Disconnects 400 A NEMA 3R/12 600 V

Mfg #: H365AWK
BOR #: 551765
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Heavy Duty Three Phase Fused Disconnects

  • All heavy duty safety switches feature quick-make, quick-break operating mechanism
  • Color coded indicator handle
  • Dual cover interlock
  • 10 kA for H, K fuses, L, 200 kA for J, R, L fuses
  • Watertight hubs
  • On 3P devices, use two outside poles for switching DC
  • NEMA 3R/12
  • Also suitable for NEMA 3R application by removing drain screw from bottom endwall
  • NEMA 12 without knockouts
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Product can be ordered only in multiples of
Brand Square D  
NEMA Rating NEMA 3R/12  
Number of Phases 3 phase  
Wire Size (1) 1/0 AWG - 750 kcmil, (2) 1/0 AWG - 300 kcmil  
Voltage 600 V  
Number of Poles 3  
Enclosure Type N3R/N12 Enclosure  
Disconnect Type Fused  
Amperage 400 A  
Material Steel  
Heavy Duty Safety Switches, Certificate, UL - 20110124-E154828 (pdf) Compliance
Safety Switches: Section 3 - Digest 179 (2024) - Safety-Switches-Digest-Catalog-0100CT2401-SEC-03 (pdf) Catalog
Schneider Electric Specification Sheet Specification Sheet
Square D Safety Switches Brochure - 3100BR9801 (pdf) Brochure
Small and medium project solutions, available now - brochure - 998-21381316_GMA-US_Small+and+medium+project+solutions+available+now (pdf) Brochure
Digest Catalog 03: Safety Switches - 0100CT1901_SEC-03 (pdf) Catalog

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