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Thermal Overload Relays 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Note! 

Please give careful consideration in handling this 

instruction manual and make sure that it is 

delivered without fail over to the hands of the 

person who takes the final responsibility for 

operation and maintenance.

 

Type  TK13 

*1, *2, *3

 

TK25 

*3

 

TK26 

*1, *2, *3

 

TK26E 

*3

 

*1: L (Long-time operating type),   

Q (Quick operating type) 

*2: H (Separate mounting type) 
*3: A (Auto-reset type) 

Summary of Contents for TK13

Page 1: ...manual and make sure that it is delivered without fail over to the hands of the person who takes the final responsibility for operation and maintenance Type TK13 1 2 3 TK25 3 TK26 1 2 3 TK26E 3 1 L Lo...

Page 2: ...arning and Caution Indicates a potentially hazardous situation which if not avoided may result in death or serious injury Indicates a potentially hazardous situation which if not avoided may result in...

Page 3: ...3 3 Interpretation of Manufacturing Lot Number 4 4 Unpacking 5 5 Precautions in Handling Unpacking and Storage 5 6 Mounting 5 7 Wiring 6 8 Usage Instructions 7 9 Maintenance and Inspection 9 9 1 Insp...

Page 4: ...of Manufacturing Lot Number Example 3 2 01 a b c a Last digit of the Christian year 3 Year 2013 b Manufactured month 2 February 1 January 2 February 9 September 0 October X November Y December c Manu...

Page 5: ...ints with regard to the space for mounting Figure 6 2 Provide a space of at least the value shown in the Figure below The dimension C is a value specified under the short circuit breaking capacity tes...

Page 6: ...pcs x 16 to 14 2 pcs x 14 to 12 1 pc x 18 to 12 2 pcs x 18 to 12 1 pc x 18 to 14 2 pcs x 18 to 16 2 pcs x 16 to 14 Sleeve dimension mm 10 11 10 Crimp terminal connection Twisted wire flexible twisted...

Page 7: ...uit d Tighten the terminal screws of the magnetic contactor to the specified torque Refer to the instruction manual for magnetic contactors Remove the thermal overload relay according to the following...

Page 8: ...0 lower than the dial set value TK26QH 12 18A Set to a value 10 lower than the dial set value 4 Operating indicator Figure 8 4 When the thermal overload relay operates the white trip indicator in the...

Page 9: ...a reactor and power must be supplied to each one of those phases 9 Maintenance and Inspection 9 1 Inspection before Operation 1 Check if there are any loose screws 2 Check if there are any wire scraps...

Page 10: ...aiting A SCCR kA Circuit Breaker Raiting A Fuse Raiti ng A 0 1 0 15 0 13 0 2 0 18 0 27 0 24 0 36 0 34 0 52 0 48 0 72 0 64 0 96 0 8 1 2 0 95 1 45 1 1 1 65 1 4 2 1 1 7 2 6 2 2 3 4 2 8 4 2 4 6 5 7 5 6 9...

Page 11: ...aker the magnetic contactor repeats make break operations It does this because the thermal overload relay repeats the resets and the trips automatically This repeated make break operations would damag...

Page 12: ......

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