LWD | Weutscheck Distributor

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Fuse Link selection 

• Select a rating of fuse link which is at least equal to the normal full load current of the circuit, including any allowances needed for harmonic currents, as in the case p.f. correction circuits.
• Ensure that the fuse link rating can withstand any over currents which may apply to the circuit, such as transformer in-rush currents, motor starting surges and repetitive cycle loads.
• When full cable protection is required, ensure that the fuse link rating is compatible with the selected cable, i.e. less than or equal to cable rating.

 

Recommended minimum torque values 

 

Rating
Fuse Link fixing screw   Cable terminal screw   Back connected stud  
                 
    Size    Torque    Size    Torque    Size    Torque  
                    
                    
 SC20    N/A    N/A    M6 grub screw    2,0Nm    M6    3,0Nm  
          (Slotted)    (18 lb.in)       (27 lb.in)  
                    
 SC32    N/A    N/A    M6 grub screw    2,0Nm    M6    3,0Nm  
          (Slotted)    (18 lb.in)       (27 lb.in)  
                    
 SC63    N/A    N/A    M8 grub screw    3,0Nm    M8    6,0Nm  
          (Slotted)    (27 lb.in)       (53 lb.in)  
                    
 SC100    M6    2,5Nm    3/8” grub screw    3,5Nm    N/A    N/A  
    Pan head    (22 lb.in)    (Slotted)    (31 lb.in)        
                    
 SC125    N/A    N/A    M12 grub screw    4,0Nm    N/A    N/A  
          (Slotted)    (35 lb.in)        
                    
 Note:    Conversion from Nm to lb.in.      1Nm = 8,85075 lb.in.           

 

(From Red Spot catalogue.)

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  3. Eaton Bussmann
  4. British Standard Fuses
  5. Red Spot and Safeclip Fuseholder FAQ
  6. Safeclip Fuse Link Selection
 
 
 

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