Omron J7TKN - Manuals

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  • Updated: 12.09.2026

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Thermal Overload Relay J7TKN 55 Thermal Overload Relay J7TKN Thermal Overload Relay • Direct and separate mounting • Single phasing sensivity according to IEC 947-4-1 • Finger proof (BGV A2) Accessories • Busbar sets • Set for single mounting ) Approved Standards Ordering Information ■ Model Number Legend 1. Thermal Overload Relay 1) Thermal Overload Relay 2) A: for mini motor contactor and motor contactor (4-11 kW) B: for motor contactor (4-15 kW) C: for motor contactor (18.5 kW) D: for motor contactor (22-37 kW) E: for motor contactor (45-55 kW) F: for motor contactor (75-110 kW) 3) Setting range 2. Accessories for Thermal Overload Relay 1) Accessories for Thermal Overload Relay 2) SM: Single mounting for J7TKN-B Types (4-32 kW) SU: Busbar sets M: Single Mounting for J7TKN-A Types (4-11 kw) 3) 176: for J7TKN-F Types (75-90 kW) 200: for J7TKN-F Types (110 kW) Standard Guide No (US,C) UL NKCR, NKCR7 IEC 947-4-1 VDE 0660 EN 60947-4-1 J7TKN-#-### 1 2 3 E18: 0.12-0.18 A E27: 0.18-0.27 A E4: 0.27-0.4 A E6: 0.4-0.6 A E9: 0.6-0.9 A 1E2: 0.8-1.2 A 1E8: 1.2-1.8 A 2E7: 1.8-2.7 A 4: 2.7-4 A 6: 4-6 A 9: 6-9 A 11: 8-11 A 14: 10-14 A 18: 13-18 A 24: 17-24 A 32: 23-32 A 42: 28-42 A 52: 40-52 A 65: 52-65 A 74: 60-74 A 90: 60-90 A 120: 80-120 A 150: 100-150 A 210: 140-220 A J74TK-##-### 1 2 3 56 Thermal Overload Relay J7TKN ■ System overview Thermal Overload Relays for plug-in mounting Setting Range Type Pack Weight D.O.L. (A) Star Delta (A) pcs. kg/pc. For contactors J7KNA-09..., J7KNA-12... 0.12 - 0.18 - manual reset J7TKN-A-E18 1 0.10 0.18 - 0.27 - J7TKN-A-E27 1 0.10 0.27 - 0.4 - J7TKN-A-E4 1 0.10 0.4 - 0.6 - J7TKN-A-E6 1 0.10 0.6 - 0.9 - J7TKN-A-E9 1 0.10 0.8 - 1.2 - J7TKN-A-1E2 1 0.10 1.2 - 1.8 - J7TKN-A-1E8 1 0.10 1.8 - 2.7 - J7TKN-A-2E7 1 0.10 2.7 - 4 - J7TKN-A-4 1 0.10 4 - 6 7 - 10.5 J7TKN-A-6 1 0.10 6 - 9 10.5 - 15.5 J7TKN-A-9 1 0.10 8 - 11 14 - 19 J7TKN-A-11 1 0.10 10 - 14 18 - 24 J7TKN-A-14 1 0.10 For contactors J7KN-10... to J7KN-40... 0.12 - 0.18 - manual and auto reset J7TKN-B-E18 1 0.14 0.18 - 0.27 - J7TKN-B-E27 1 0.14 0.27 - 0.4 - J7TKN-B-E4 1 0.14 0.4 - 0.6 - J7TKN-B-E6 1 0.14 0.6 - 0.9 - J7TKN-B-E9 1 0.14 0.8 - 1.2 - J7TKN-B-1E2 1 0.14 1.2 - 1.8 - J7TKN-B-1E8 1 0.14 1.8 - 2.7 - J7TKN-B-2E7 1 0.14 2.7 - 4 - J7TKN-B-4 1 0.14 4 - 6 7 - 10.5 J7TKN-B-6 1 0.14 6 - 9 10.5 - 15.5 J7TKN-B-9 1 0.14 8 - 11 14 - 19 J7TKN-B-11 1 0.14 10 - 14 18 - 24 J7TKN-B-14 1 0.14 13 - 18 23 - 31 J7TKN-B-18 1 0.14 17 - 24 30 - 41 J7TKN-B-24 1 0.14 23 - 32 40 - 55 J7TKN-B-32 1 0.14 For contactors J7KN-24... to J7KN-40... 28 - 42 48 - 73 manual and auto reset J7TKN-C-42 1 0.30 For contactors J7KN-50...-J7KN-74... 40 - 52 70 - 90 manual and auto reset J7TKN-D-52 1 0.40 52 - 65 90 - 112 J7TKN-D-65 1 0.40 60 - 74 104 - 128 J7TKN-D-74 1 0.40 Thermal Overload Relay J7TKN 57 Thermal Overload relays for separate mounting Accessories Setting Range Type Pack Weight D.O.L. (A) Star Delta (A) pcs. kg/pc. For contactors J7KN-85... to J7KN-151... 60 - 90 104 - 156 manual reset J7TKN-E-90 1 0.90 80 - 120 140 - 207 J7TKN-E-120 1 0.90 For contactors J7KN-176... to J7KN-200... 100 - 150 175 - 260 manual reset J7TKN-F-150 1 1.5 140 - 220 240 - 380 J7TKN-F-210 1 1.5 busbar sets see accessories Type Pack Weight for overload relays for contactors pcs. kg/pc. Busbar Sets J7TKN-F-150 J7KN-151, J7KN-176 J74TK-SU-176 1 0.6 J7TKN-F-210 J7KN-200 J74TK-SU-200 1 0.7 busbars must be installed by users Cable Cross-section to clamp (mm²) Type Pack Weight for overload relay solid or stranded flexible flex. with multicore cable end pcs. kg/pc. Sets for single mounting J7TKN-A J7TKN-B 0.75 0.75 - - 6 6 0.75 0.75 - - 4 4 0.5 0.5 - - 4 4 J74TK-M J74TK-SM 1 1 0.035 0.035 58 Thermal Overload Relay J7TKN Specifications ■ Engineering data and Characteristics Thermal Overload Relays, tripping times for selection to motors of protection degree EEx e Relays With Standard Tripping Characteristic When selecting a standard overload, refer to the tripping curve. Determine the values of the starting current ratio IA/IN and the time tE which is marked on the label of the motor. The overload must trip within the tE time, which means that the tripping curve from cold con- dition must be (20% due to tolerance) below the coordination point IA/ IN and the time tE. IA= Starting current of motor IN = Rated current of motor tE = tE-time of motor All tripping times of overload relays J7TKN-A are shorter than the minimum values of the tE time for motors of protection degree EEx e acc. to EN 50019 and therefore are suitable for all motors of protec- tion degree EEx e. For these overload relays the selection on basis of tripping curves is thereby not necessary. Labels of tripping curves for each setting range, sized 148x105mm (self-adhesive) are available on request. Specify type and setting range. Setting Range Tripping time(in seconds) depending on the mul- tiple of the current setting from cold condition (tol- erance ±20% of the tripping time) IA/IN IA/IN IA/IN IA/IN IA/IN IA/IN A A 3 4 5 6 7,2 8 J7TKN-A-... 0,12 - 0,18 18,5 10,4 7,2 5,5 4,3 3,6 0,18 - 0,27 16,7 9,8 6,5 5 4,1 3,5 0,27 - 0,4 19,4 12,1 8,2 5,9 4,9 4,2 0,4 - 0,6 18,7 11,2 8 6 4,9 4,1 0,6 - 0,9 19,7 11,6 8,1 6,1 4,9 4,2 0,8 - 1,2 22,9 13,6 10 7,3 6 5,2 1,2 - 1,8 22,2 13,2 9,2 7,6 5,8 5,3 1,8 - 2,7 23 13,7 9,3 7,6 5,7 5,1 2,7 - 4 24 14,4 9,9 7,8 5,9 5,1 4 - 6 24,7 13,8 9,9 7,3 5,6 4,8 6 - 9 22 13,4 8 5,7 4,1 3,5 8 - 11 17,4 9,2 5,9 4,1 2,9 2,3 10 - 14 26,4 12,9 7,6 5,2 3,5 2,8 J7TKN-B-... 0,12 - 0,18 16,1 9,6 6,8 5,3 4,2 3,7 0,18 - 0,27 16,6 9,7 6,7 5,2 4,1 3,6 0,27 - 0,4 19,4 11,4 7,9 6,1 4,7 4,2 0,4 - 0,6 18,7 10,9 7,6 5,9 4,6 4,0 0,6 - 0,9 19,2 11,2 7,7 5,9 4,6 4,1 0,8 - 1,2 20,8 12,3 8,5 6,6 5,2 4,6 1,2 - 1,8 25,5 14,1 9,8 7,6 5,9 5,2 1,8 - 2,7 26,6 15,6 10,9 8,3 6,5 5,7 2,7 - 4 22,7 13,6 9,5 7,4 5,8 5,1 4 - 6 22,2 13,3 9,3 7,1 5,6 4,9 6 - 9 20,4 11,9 8,2 6,1 4,7 4,0 8 - 11 20,9 11,8 7,9 5,7 4,3 3,5 10 - 14 21,3 11,7 7,4 5,1 3,7 3,0 13 - 18 21,2 12,1 8,0 6,2 4,6 4,1 17 - 24 20,4 12 8,6 6,3 4,5 3,7 23 - 32 20,2 10,2 6,7 4,7 3,4 2,8 J7TKN-C-42 28 - 42 25,2 13,3 8 5,5 4 3,1 J7TKN-D-... 40 - 52 18,3 9,2 5,6 3,9 2,8 2,2 52 - 65 17,8 8,7 5,2 3,4 2,5 1,9 60 - 74 19,5 13,5 11 10 9,5 8,5 J7TKN-E-... 60 - 90 19,5 13,5 11 10 9,5 8,5 80 - 120 18 11 10 9 8,5 8 J7TKN-F-... s s s s s s 100 - 150 34 26 24 20,5 19 18 140 - 210 30 24 21 18,5 17 16 Typical tripping curve for overload relay J7TKN-A Minimum values of tE time (motor) acc. to EN50019 ratio IA/IN