Why LWD?

  • 100% original parts
  • Authorized Distributor
  • Close co-operation with the manufacturers
  • Established since 1988
  • Fair prices
  • More than 20,000 products
  • Reliable
  • Wholesale quantities

Red Spot Fuse Link Selection

Details
Category: Red Spot and Safeclip Fuseholder FAQ

 

 

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.

 

Fuseholder rating
 'RED SPOT' HRF fuse link to BS88:Part 2: 1988
660 Volt a.c. 
 Extended Range of 'RED SPOT' HRC fuse links to BS 88: Part 2: 1988 for motor circuit protection  
  
 Amp    TYPE: TYPE: 
Current rating
Amp
 Rating for motor starting
Amp
20  NIT2-20A 
NIT20M251
NIT20M321		 20
20
 25
32
           
32  TIA2-32A   TIA32M35
TIA32M40 TIA32M50
TIA32M63
 32
32
32
32		 35
40
50
63
           
63 TIA2-32A TIS35-63A   TIS63M80 TIS63M100   63
63		  80
100  
          
100 TIA2-32A
TIS35-63A
TCP63-100A
TCP100M125
TCP100M160
TCP100M200 
100
100
100		 125
160
200
         
200 TBC2-3A TC80 & 100A
TF125-200A 
TF200M250 
TF200M315
 200
200		 250
315
         
400 TKM250 & 350A
TM355 & 400A
 TM400M450   400 450

 

 

Recommended minimum torque values 

 

Rating Fuse Link fixing screw   Cable terminal screw   Back connected stud  
                 
    Size    Torque    Size    Torque    Size    Torque  
                    
 RS20    4BA (Ø35mm)    1,2Nm    1/4” BSF grub screw    2,0Nm    M6    3,0Nm  
    Pan head    (11 lb.in)    (Slotted)    (18 lb.in)       (27 lb.in)  
                    
 RS32    2BA (Ø45mm)    2,0Nm    1/4” BSF grub screw    2,0Nm    M6    3,0Nm  
    Pan head    (18 lb.in)    (Slotted)    (18 lb.in)       (27 lb.in)  
                    
 RS63    2BA (Ø45mm)    2,0Nm    3/8” BSF grub screw    3,5Nm    M8    6,0Nm  
    Pan head    (18 lb.in)    (Slotted)    (31 lb.in)       (53 lb.in)  
                    
 RS100    M6    2,5Nm    1/2” BSF grub screw    4,0Nm    M10    10,0Nm  
    Pan head    (22 lb.in)    (Slotted)    (35 lb.in)       (89 lb.in)  
                    
 RS200    M6    2,5Nm    5/8” BSF hex head    25,0Nm    M12    14,0Nm  
    Pan head    (22 lb.in)    (18mm A/F)    (18,5 lb.ft)       (10 lb.ft)  
                    
 RS400    M8    6,0Nm    5/8” BSF hex head    25,0Nm    M16    25,0Nm  
    Hex head    (53 lb.in)    (18mm A/F)    (18,5 lb.ft)       (18,5 lb.ft)  
                    
 Note:    Conversion from Nm to lb.in.     1Nm = 8,85075 lb.in. 
          

 

 

 (From Red Spot catalogue.)