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Blackburn 4H - Heavy-Duty Disconnect Switch 400A 600V

Blackburn
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The Blackburn 4H is a heavy-duty industrial disconnect switch designed for reliable circuit isolation and safety lockout in high-power applications. It is rated for 600V AC and carries a continuous current rating of 400A, with a robust AIC rating suitable for fault current interruption. The switch features a compact NEMA 1 enclosure constructed from painted steel, measuring approximately 12.5 x 8.5 x 6.5 inches, and weighs 42.6 lb. It complies with UL 98 and CSA C22.2 standards for enclosed switches, ensuring safe operation in demanding environments. Typical applications include motor control centers, industrial machinery, and commercial power distribution systems where a visible-break disconnect is required.

Key Features & Specifications
  • Type: Heavy-duty, non-fusible, visible-blade disconnect switch
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 12.5 x 8.5 x 6.5 inches
  • Standards: UL 98, CSA C22.2
  • Applications: Motor control centers, industrial machinery, power distribution
  • Switch Type: Non-fusible, visible-blade
  • Configuration: 3-pole, 3-wire
  • Coil Voltage Maximum: Not applicable (manual operation)
  • Temp Rating: -20°C to 60°C
  • Shipping Dimensions: 14 x 10 x 8 inches
  • Phase: 3-phase
  • Voltage: 600V
  • Amperage: 400A
  • AIC rating: 10kA at 600V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent protection via upstream device
  • Functions: Disconnect, lockout
  • Frame Size: 400A
  • Trip Type: None (non-automatic)
  • Panel Type: NEMA 1
  • Breaker Type: Not applicable
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: 500 kcmil max
  • Metal Type: Painted steel
  • Panel Style: Surface mount
  • Bus Type: Copper
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Surface
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: 200 HP at 600V
  • Aux Contacts: 1 N.O. + 1 N.C.
  • CPT: Not included
  • Full Load Amps: 400A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 400A
  • Full Load Amp Minimum: 0A
  • Enclosure: NEMA 1
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper/Aluminum
  • Amperage Maximum: 400A
  • Amperage Minimum: 0A
  • Nema Rating: 1
  • Switch Style: Heavy-duty
  • Wire Size: 500 kcmil max
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Not applicable
  • Terminal Connection: Mechanical lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-wire
  • Standards: UL 98, CSA C22.2
  • Compatible Frames: Not applicable
  • Installation Type: Surface
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not applicable
  • Current Rating: 400A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: 60°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 78378620025
  • GTIN: 00783786200252