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Fuses

Fuses
Fuses
Fuses are simple safety devices used to provide overcurrent protection for electrical circuits. The essential component in a fuse is a metal wire or strip that links two contact terminals together. If too much current flows through the fuse, the metal link will melt and interrupt the circuit. A fuse can only trip and open the circuit once, so it must be replaced or repaired to complete the circuit again.

Today, thousands of different fuse designs are used to achieve basic circuit protection requirements using specific current and voltage ratings, breaking capacities and response times. The operating characteristics for any given fuse are chosen to satisfy the needs of the application to protect a circuit without needless interruption.

Circuit breakers are alternative solutions to fuses, but because of their different characteristics choosing one over the other depends largely on the needs of the application.
CCMR Series Image
  • Time Delay Fuses
  • Extremely Current Limiting
  • 200 kA Interrupting Rating
  • Ratings up to 60 Amps
The CCMR series is ideal for space saving protection of motors up to 40 hp. It was designed specifically to withstand sustained starting currents of small motors. The CCMR 60 fuse is the smallest 60 A fuse available rated at 600 V. Compared to other UL Listed fuses, Class CC fuses are the most current-limiting, rating for rating.
FNQ-R Series Image
  • 0.2~30 Amps
  • 600VAC
  • Time Delay
  • Rejection Type Cartridge
  • UL, CSA, CE Approvals
Bussmann FNQ-R series was designed to meet the needs of control circuit transformer protection. Current-limitation protects down stream components against damaging thermal and magnetic effects of short-circuits.
  • Melamine Tube
  • Nickel-Plated Brass Endcaps
MP Series Image
  • 0.32 ~ 7.5 Amps
  • 125 Volts AC/DC
  • Fast Acting Alarm Fuse
  • Plug-In Type
  • cURus, TUV Approved
The Daito MP series alarm fuses are commonly used in NC machine tools, power supplies, instrumentation and control systems, medical and communications equipment. When used with the proper fuse socket an open circuit will enable an alarm circuit. It's plug-in style makes for simple and safe fuse replacement.
  • Open fuse indication window
  • PCB, DIN or Panel Mount with Proper Fuse Holder
  • RoHS Compliant
LM Series Image
  • 0.3 ~ 5.0 Amps
  • 48 Volts AC/DC
  • General Purpose Type
  • Plug-In PC Mount Micro Fuse
  • UR, CSA, TUV Approved
The LM series micro-fuse from Daito are socket-mounted micro fuses designed for printed circuit use. They are compact in size and are superior to glass mounted fuses. The transparent body provides a quick visual indication of the fuse status.
  • Sockets available for vertical or right angle printed circuit mounting
  • RoHS Compliant
JTD Series Image
  • Time Delay Fuses
  • Current Limiting
  • Ratings up to 600 Amps
  • Indication Version Available
The Littelfuse POWR-PRO JTD Class J fuse provides maximum protection in a compact package.The compact Class J package was designed specifically for circuits where space is at a premium. The current limiting time delay JTD offers a patented true dual-element design that is ideal for use in circuits with high inrush currents.
FLM Series Image
  • Time-Delay Fuses
  • 10kA Interrupting Ratings
  • Ratings up to 30 Amps
  • 240 AC Voltage Rating
  • UL, CSA Approvals
Littlefuse's FLM 250 volt time-delay fuses are ued to protect control circuit transformers, solenoids, and other circuits with high inrush currents. Excellent for supplemental protection of small motors.
LPJ Series Image
  • 1~600 Amps
  • 600VAC, 300VDC
  • Dual-Element Time Delay
  • Cartridge or Center Bolted
  • UL, CSA Approvals
Bussmann LPJ series fuses have a high degree of current limitation due to the fast speed-of-response to short-circuits. The long time delay minimizes needless fuse openings due to temporary overloads and transient surges. Unique dimensions assure that another class of fuse with a lesser voltage rating, interrupting rating, or current limiting ability cannot be substituted.
  • Low Watts Loss
  • High Interrupt Rating
  • Space-Saving Package
GMA Series Image
  • 5 x 20 Millimeters
  • 0.063~15 Amps
  • 125VAC or 250VAC
  • Fast Acting
  • UL, CSA Approvals
The Bussmann GMA Series are a group of low voltage, general purpose miniature fuses. These fuses are designed for use in appliances and consumer electronic equipment.
  • RoHS Versions Available
  • Low Breaking Capacity
  • Optional Axial Leads
  • Glass Tube
  • Nickel-Plated Brass Endcaps
KLDR Series Image
  • Time Delay Fuses
  • Extremely Current Limiting
  • 200 kA Interrupting Rating
  • Rating up to 30 Amps
KLDR fuses are time-delay fuses designed to protect control transformers, solenoids and similar inductive components with high magnetizing currents during the first half-cycle. They provide excellent protection of motor branch circuits containing IEC or NEMA rated motor controllers or contactors.
LP-CC Series Image
  • 0.5~30 Amps
  • 600VAC
  • Time Delay
  • Rejection Type Cartridge
  • UL, CSA, CE Approvals
Bussmann LP-CC series fuses are an all-purpose solution meeting most protection requirements up to 30 Amps. These fuses provide faster response to damaging short-circuit currents and higher interruping rating than mechanical overcurrent protective devices.
  • Superior Motor Protection
  • Unique Yellow Color
  • Very Compact Package
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