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Thomas & Betts 144AL - Class L Fuse 200A 600V (3-Pole Ferrule)

Thomas & Betts
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Thomas & Betts 144AL is a 6-pound aluminum alloy fuse designed for overcurrent protection in industrial electrical systems. It is rated for 600 volts AC and 200 amperes, with a 200,000 AIC interrupting capacity, and features a Class L, 200A, 600V configuration with a 3-pole, 3-wire design. The fuse has a 1.5-inch diameter, 3.5-inch length, and a clip center of 2.5 inches, constructed with a non-vented, ferrule-type terminal connection and a 90°C insulation temperature rating. It complies with UL 248-8 and CSA C22.2 No. 248.8 standards, ensuring reliable protection for motor control centers, switchboards, and panelboards in heavy industrial environments. Typical applications include feeder circuits, transformer protection, and branch circuit protection in manufacturing plants and commercial buildings.

Key Features & Specifications
  • Type: Class L, 200A, 600V, aluminum alloy, non-vented ferrule
  • Voltage Rating: 600 V AC
  • Current Rating: 200 A
  • Dimensions: 1.5-inch diameter, 3.5-inch length
  • Standards: UL 248-8, CSA C22.2 No. 248.8
  • Applications: Feeder circuits, transformer protection, branch circuit protection in industrial environments
  • Switch Type: N/A
  • Configuration: 3-pole, 3-wire
  • Coil Voltage Maximum: N/A
  • Temp Rating: 90°C
  • Shipping Dimensions: N/A
  • Phase: 3
  • Voltage: 600 V
  • Amperage: 200 A
  • AIC rating: 200,000 A
  • Connection: Ferrule
  • Poles: 3
  • Protection: Overcurrent
  • Functions: Overcurrent protection
  • Frame Size: N/A
  • Trip Type: N/A
  • Panel Type: N/A
  • Breaker Type: N/A
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: Aluminum alloy
  • Panel Style: N/A
  • Bus Type: N/A
  • Fuse Class: L
  • Insulation Temperature: 90°C
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: 200 A
  • Diameter: 1.5 inches
  • Velocity: N/A
  • Clip Center: 2.5 inches
  • Clas: L
  • Mounting: Ferrule
  • Hz: 50/60
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: N/A
  • Dist Voltage: N/A
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: N/A
  • Full Load Amp Minimum: N/A
  • Enclosure: N/A
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: N/A
  • Amperage Maximum: 200 A
  • Amperage Minimum: N/A
  • Nema Rating: N/A
  • Switch Style: N/A
  • Wire Size: N/A
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: N/A
  • Terminal Connection: Ferrule
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 248-8, CSA C22.2 No. 248.8
  • Compatible Frames: N/A
  • Installation Type: Ferrule mount
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: N/A
  • Current Rating: 200 A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: N/A
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


Product Identification
  • UPC: 78621080120
  • GTIN: 00786210801209