W-F-1814/3C
REQUIREMENTS:
Interface and physical dimensions: See figure 1. Physical: Nonrenewable.
Terminals: Ferrule type.
Material: Brass, copper, or copper alloy.
Strength: 2 pound-inches torque between body and ferrules. Body:
Insulating material: Fiber, ceramic, melamine-impregnated glass fiber, or other suitable material. Electrical:
Voltage: 480 volts or less. Frequency: 48 Hz to 60 Hz. Current: See table l.
Current carrying capacity: 100 percent indefinitely with temperature rise not to exceed 75°C
above ambient on the ferrules.
Overload interrupt:
Time delay: Shall interrupt within 1 hour at 135 percent of rated current and at 200 percent of rated current shall interrupt in not less than 12 seconds nor more than 4 minutes.
Watts loss: Average not to exceed 4 watts.
Interrupting capacity rating: 100,000 amperes rms symmetrical at 480 volts, 60 Hz, and power factor of 20 percent or less.
Threshold ratio: 60 maximum.
Peak let-thru current: 7,000 amperes maximum. Maximum clearing: I2T - 7x103 ampere2 seconds.
Applicable fuseholders: Class G in accordance with UL 4248-5. Part or Identifying Number (PIN): See table l.
TABLE l. Electrical characteristics.
2
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