FRN 1 1/4
Bussmann: FRN-R 1 1/4
Gould / Ferraz / Shawmut: TR 1 1/4R
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Class RK5 Current limiting
Most popular fuse for motor circuit protection because time delay handles harmless starting and inrush currents
Application: Motor circuits, mains, feeders, branch circuits, transformers, service entrance equipment and general purpose protection
Provides motor overload, ground fault and short circuit protection
Helps protect motors against burnout from overloads and single phasing on three phase systems
Dual-element fuses can be applied in circuits subject to temporary motor overloads and surge currents to provide both high performance short circuit and overload protection
Overload element provides protection against low level overcurrent of overloads and will hold an overload which is five times greater than the ampere rating of the fuse for a minimum of ten seconds
Voltage Rating; 250 Volts AC (or less), 125 Volts DC
Dual-element Time-Delay 10 second (minimum) at 500% rated current
Interrupt rating; 200,000 amp RMS sym. for AC voltages and 20,000 amp IC for DC voltages
Ferrule/Cartridge & Knife Blade types
Moisture resistant fiberglass body
1/10-30A 2"L x 9/16" Dia.
35-60A 3"L x 13/16" Dia.
70-100A 5 7/8"L x 1 1/16" Dia.
110-200A 7 1/8"L x 1 9/16" Dia.
225-400A 8 5/8"L x 2 1/16" Dia.
450-600A 10 3/8"L x 2 9/16" Dia.
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