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Eaton 400ASFBKIT - 400A Fusible Safety Switch 600V AC

Cutler Hammer
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Eaton Cutler-Hammer 400ASFBKIT is a 400A fusible safety switch designed for primary circuit protection and disconnection in industrial power distribution systems. This switch accommodates 400A maximum current at 600V AC, providing reliable overcurrent protection through H, K, or R class fuses. The unit features a NEMA 1 general-purpose enclosure constructed from 16 lb of heavy-gauge steel with dimensions of 12 in x 1 in x 10 in (Length/Depth x Height x Width), incorporating a visible blade mechanism for positive load break indication. It complies with UL 98 and CSA standards for safety switch applications, ensuring code-compliant installation in commercial and industrial environments. Typical applications include service entrance equipment, motor control centers, and feeder disconnect points in manufacturing facilities, data centers, and heavy machinery installations.

Key Features & Specifications
  • Type: Fusible safety switch, heavy-duty, NEMA 1 enclosure, visible blade design
  • Voltage Rating: 600V AC
  • Current Rating: 400A
  • Dimensions: 12 in x 1 in x 10 in (Length/Depth x Height x Width)
  • Standards: UL 98, CSA certified
  • Applications: Service entrance, feeder disconnect, motor control centers
  • Switch Type: Heavy-duty, fusible
  • Configuration: 3-pole, 3-wire
  • Coil Voltage Maximum: Not applicable (manual switch)
  • Temp Rating: Standard industrial range
  • Shipping Dimensions: 12 in x 1 in x 10 in
  • Phase: 3-phase
  • Voltage: 600V AC
  • Amperage: 400A
  • AIC rating: 200kA at 600V AC with Class R fuses
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent via fuses
  • Functions: Disconnect, isolation
  • Frame Size: 400A
  • Trip Type: Not applicable (fuse-dependent)
  • Panel Type: NEMA 1
  • Breaker Type: Not applicable (switch)
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Up to 500 MCM
  • Metal Type: Steel
  • Panel Style: Surface mount
  • Bus Type: Copper
  • Fuse Class: H, K, or R
  • Insulation Temperature: 105°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: 400A
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Surface
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: 200 HP at 480V
  • Aux Contacts: 1 N.O., 1 N.C.
  • CPT: Not included
  • Full Load Amps: 400A
  • Dist Voltage: 600V AC
  • 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 or aluminum
  • Amperage Maximum: 400A
  • Amperage Minimum: 0A
  • Nema Rating: 1
  • Switch Style: Heavy-duty, visible blade
  • Wire Size: #6 AWG to 500 MCM
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 78668598745
  • GTIN: 00786685987453