Fuseholder Application Information

 Fuseholder Application Information 

BLADE-TYPE INLINE FUSE HOLDER
APPLICATION INFORMATION

Fuse Holders are designed for operation and evaluated at a maximum temperature of 85 degrees Celsius for 4 hours.  They are tested at 90 percent of the rated maximum value of the fuse (for example, the test current of a 20 ampere fuse would be 18 amperes continuous; for a 30 ampere fuse the rating would be 27 amperes continuous, etc.).   Testing is evaluated on a continuous current basis using a standard blow fuse and does not characterize peak current such as that which results from incandescent inrush or instantaneous current from loads such as strobe lamps.    Additionally, evaluation is for direct current (DC) circuits.  Fuses are nominally rated for their specified amperage at 25 degrees Celsius.  When the conditions of operation are different from the conditions of the rating, the fuse and fuse holder must be re-rated.  At higher ambient temperatures a fuse will respond faster to a given overload.  The converse is true in colder ambient temperatures.  In all cases determine the environment in which the fuse and its fuse holder are going to operate and adjust your specifications accordingly.  Also give special consideration to the environment of the fuse whenever a cover is used to enclose the fuse within its holder.  For ALL FUSE HOLDERS the maximum operating voltage is 32 volts.

Fuse Holder Series 106 and 107 with integral cover and series 112 with tethered cover have been evaluated for water intrusion by an independent testing laboratory and found to meet the IPX7 requirements in accordance with Section 14.3 of IEC 60529.
 
A fuse must be properly and fully inserted into the holder to provide a solid and good quality connection.  Poor or improper insertion of the fuse into its holder can result in failure of both the holder and the fuse, and not properly protect the load for which it is intended.  Be certain that the fuse blades are properly engaged into the mating holder terminals and not in front of or behind them.  After confirming correct alignment, insert the fuse completely and fully into the fuse holder.  Fuse insertion force is very high by design to provide the required low contact resistance.  Never re-form or distort the terminals in any way to reduce this force.  Make certain that the holder is joined with a low resistance connection to your circuit.  To prevent arcing and degradation of the terminals, always disconnect or switch off the load when installing or removing a fuse from its fuse holder. 

The ATO/ATC and Mini fuse holder bodies are molded from flexible materials.  Mounting is important and must allow the fuse holder to be mechanically isolated from vibration as well as stress and strain that may be transmitted to its terminals.  Terminal deformation can result from this motion and cause the fuse holder to fail.  Do not use the fuse holder to transfer mechanical loads.  
 
Due to the nature of the insert terminal molding process, flash (excess fuse holder body material) may form a thin layer over a portion of the entry end of the terminals for those fuse holders that have insert molded contacts.  This material is displaced upon insertion of the fuse blades into the mating receptacles within the fuse holder.  The maximum amount of terminal coverage allowed is 40 percent (60 percent or more of the terminal surface must be exposed).

The mechanical handling of wire may cause some distortion of the insulation.  This is much more prevalent in cross-linked insulated wire such as SAE types TXL, GXL etc.  Additionally, insulation distortion may occur where the fuse holder leads exit the body and is caused by the mechanics of the mold where it closes around the lead to contain the flow of molten resin.  This is also much more evident with cross-linked insulation. 

Observe the recommendations and specifications of wire manufactures and SAE regarding minimum wire bend radii.  Generally, a minimum bend radius of 5 to 6 times the outer diameter is sufficient to prevent local stresses from compromising the insulation.
 
IMPORTANT.  Consider the load, location, temperature, atmosphere, circuit dynamics, etc. and make certain that the proper fuse holder has been selected.  For applications including transient operation, alternating current, elevated temperatures, corrosive environments, mechanical vibration and stresses, etc., please request sample fuse holders from your distributor or the factory for your evaluation. 

RoHS Statement

All fuse holders manufactured by Triplex Manufacturing Company are RoHS compliant.  Fuse holders and all components used to fabricate fuse holders do not contain intentional additions of lead, hexavalent chromium, cadmium, mercury, PBB or PBDE.  Maximum lead in any fuse holder does not exceed 0.08 percent by weight.


Rev 2/22/07



BLADE-TYPE INLINE FUSE HOLDER DESIGN WORKSHEET

GENERAL INFORMATION FOR SPECIFYING FUSE HOLDERS

 

 FUSE TYPE       MINI                   ATO/ATC                             MAXI

 WIRE GAGE      16, 14, 12           16, 14, 12                            6

 SERIES  1        12                      100/106/107/109                   114

 MAXIMUM        30A (12 GAGE)     30A (12 GAGE 107/109)        60A 
 CURRENT        20A (14,16 GAGE) 20A (14,16 GAGE 100/106)

 COVER            AVAILABLE           100 NOT AVAILABLE                 AVAILABLE 
                                                106/107 INTEGRAL TETHER  
                                                109 AVAILABLE 

 INSULATION      GPT PVC            GPT PVC                                XLPE

 BODY WIDTH     1.60                 100/109 = 1.08                      3.36 
 (INCHES)                                  106/107 = 1.00
      
 BODY           THERMO-PLASTIC   100 PVC                              POLY-
 MATERIAL     ELASTOMER            106/107/109 THERMO-         CARBONATE 
                                                PLASTIC ELASTOMER          

LENGTH ONE    SPECIFY LENGTH IN INCHES TO NEAREST
 END               1/4 INCH  FROM SIDE OF 
                     BODY. TOLERANCE IS ± 1/4 INCH FOR EVERY 15
                     INCH INCREMENT. 
                     LENGTHS GREATER THAN 12 INCHES ARE SUPPLIED
                     WOUND AND TIED.  

 STRIP           SPECIFY LENGTH IN INCHES TO NEAREST 1/16
 LENGTH         INCH.TOLERANCE IS ± 1/16 INCH.
 ONE END

 LENGTH         SPECIFY LENGTH IN INCHES TO NEAREST 1/4 INCH FROM 
 OTHER  END   SIDE OF BODY. TOLERANCE IS ± 1/4 INCH FOR EVERY 12
                    INCH INCREMENT. LENGTHS GREATER THAN 15 INCHES ARE
                    SUPPLIED WOUND AND TIED.  
   
 STRIP      SPECIFY LENGTH IN INCHES TO NEAREST 1/16 INCH.  TOLERANCE
 LENGTH     IS ± 1/16 INCH.
 OTHER END


 FUSE HOLDER DESIGN WORKSHEET

For quantities above 10,000, we are prepared to manufacture to your specific needs. Please feel free to call us for a quotation.

 Fuse type:   _________________
  
 Fuse rating:   _________________

 Wire gauge:   _________________
 
 Wire color:   _________________

 Insulation type:  _________________

 Maximum current:  _________________

 Cover required:  _________________

  Body style preferred: _________________

  Wire length A:  _________________

  Strip length A:  _________________

  Wire length B:  _________________

  Strip length B:  _________________

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Globe Specialty Company

Makers of the Innovative Glo-Brite® Vehicle Lighting and Electrical Products. We Manufacture Top-of-the-Line Components Including Original Equipment Type Lamps and Lenses for Light Duty Trucks, Pickups, Vans and Sport Utility Vehicles, as well as for RV's, Commercial and Heavy Duty Vehicles.