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thermal overload relay j7tkn thermal overload relay verload relay thermal overload relay ? direct and separate mounting single phasing sensivity according to iec 947-4-1 finger proof ( vbg 4) accessoires ssoires busbar sets bar sets set for single mounting ) approved standards tandards ordering information g information model number legendber 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 (examples) g range (examples) e16: 0.12-0.16 a e27: 0.18-0.27 a ... 2e7: 1.8-2.7 a ... 11: 8-11 a 2. accessories for thermal overload relay 1) accessories for thermal overload relay 2) sm: single mounting for j7tkn-b types (4-32 kw) 4-32 kw) su: busbar sets 3) 175: for j7tkn-f types (75-90 kw) 200: for j7tkn-f types (110 kw) standard guide no (us,c) ul nkcr, nkcr7 ice 947-4-1 vde 0660 de 0660 en 60947-4-1 j7tkn- # - ### 123 j74tk- ## - ### 123
52 thermal overload relay j7tkn system overview ystem overview w 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..., j7kn-10... to j7kn-22... kna-09..., j7kna-12..., j7kn-10... to j7kn-22... 0.12 - 0.18 - hand reset j7tkn-a-e18 10.10 0.18 - 0.27 - j7tkn-a-e27 10.10 0.27 - 0.4 - j7tkn-a-e4 10.10 0.4 - 0.6 - j7tkn-a-e6 10.10 0.6 - 0.9 - j7tkn-a-e9 10.10 0.8 - 1.2 - j7tkn-a-1e2 10.10 1.2 - 1.8 - j7tkn-a-1e8 10.10 1.8 - 2.7 - j7tkn-a-2e7 10.10 2.7 - 4 - j7tkn-a-4 10.10 4- 6 7 - 10.5 j7tkn-a-6 10.10 6- 9 10.5 - 15.5 j7tkn-a-9 10.10 8- 11 14 - 19 j7tkn-a-11 10.10 10 - 14 18 - 24 j7tkn-a-14 10.10 13 - 18 23 - 31 j7tkn-a-18 10.10 17 - 23 30 - 40 j7tkn-a-23 10.10 22 - 30 38 - 52 j7tkn-a-30 10.10 for contactors j7kn-10... to j7kn-40... 0.12 - 0.18 - hand- and auto reset j7tkn-b-e18 10.14 0.18 - 0.27 - j7tkn-b-e27 10.14 0.27 - 0.4 - j7tkn-b-e4 10.14 0.4 - 0.6 - j7tkn-b-e6 10.14 0.6 - 0.9 - j7tkn-b-e9 10.14 0.8 - 1.2 - j7tkn-b-1e2 10.14 1.2 - 1.8 - j7tkn-b-1e8 10.14 1.8 - 2.7 - j7tkn-b-2e7 10.14 2.7 - 4 - j7tkn-b-4 10.14 4- 6 7 - 10.5 j7tkn-b-6 10.14 6- 9 10.5 - 15.5 j7tkn-b-9 10.14 8- 11 14 - 19 j7tkn-b-11 10.14 10 - 14 18 - 24 j7tkn-b-14 10.14 13 - 18 23 - 31 j7tkn-b-18 10.14 17 - 24 30 - 41 j7tkn-b-24 10.14 23 - 32 40 - 55 j7tkn-b-32 10.14 for contactors j7kn-24... to j7kn-40... 28 - 42 48 - 73 J7TKN-C-42 10.30
thermal overload relay j7tkn 53 thermal overload relays for separate mounting accessories ccessories for contactors j7kn-50...-j7kn-74... 40 - 52 70 - 90 j7tkn-d-52 10.40 52 - 65 90 - 112 j7tkn-d-65 10.40 60 - 74 104 - 128 j7tkn-d-74 10.40 setting range type pack weight d.o.l. (a) star delta (a) pcs. kg/pc. for contactors j7kn-85... to j7kn-150... 60 - 90 104 - 156 hand reset j7tkn-e-90 10.90 80 - 120 140 - 207 j7tkn-e-120 10.90 for contactors j7kn-175... to j7kn-200... 100 - 150 175 - 260 hand reset j7tkn-f-150 11.5 140 - 220 240 - 380 j7tkn-f-210 11.5 busbar sets see accessories type pack weight for overload relays for contactors pcs. kg/pc. busbar sets usbar sets j7tkn-f-175 kn-f-175 j7kn-150, j7kn-175 j73tk-su-175 10.6 j7tkn-f-210 j7kn-200 j73tk-su-200 10.7 busbars must be installed by users setting range type pack weight d.o.l. (a) star delta (a) pcs. kg/pc. cable cross-section to clamp (mm 2 ) type pack weight for overload relay solid or stranded flexible flex. with multicore cable end pcs. kg/pc. sets for single mounting u3/32 0.75 - 6 0.75 - 4 0.5 - 4 j73tk-sm 1 0.035
54 thermal overload relay j7tkn specifications ns engineering data and characteristics ta and characteristics istics 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 i a /i n and the time t e which is marked on the label of the motor. the overload must trip within the t e time, which means that the tripping curve from cold con- dition must be (20% due to tolerance) below the coordination point i a / i n and the time t e . i a = starting current of motor i n = rated current of motor t e = t e -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 depending on the multiple of the current setting from cold condition (tolerance 20% of the tripping time) 20% of the tripping time) i a /i n i a /i n i a /i n i a /i n i a /i n i a /i n a a 34567,28 j7tkn-a-... ssssss 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 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 13 - 18 14,7 7,7 4,8 3,2 2,3 1,7 17 - 23 16,2 8,4 5 3,6 2,4 1,8 22 - 30 16,8 8,5 5 3,6 2,3 1,9 J7TKN-C-42 ssssss 28 - 42 25,2 13,3 8 5,5 4 3,1 j7tkn-d-... ssssss 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-... ssssss 60 - 90 19,5 13,5 11 10 9,5 8,5 80 - 120 18 11 10 9 8,5 8 j7tkn-f-... ssssss 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 t e time (motor) acc. to en50019 ratio i a /i n
thermal overload relay j7tkn 55 fuses for j7tkn-a; j7tkn-b; j7tkn-c; j7tkn-d; j7tkn-e; j7tkn-f uses for j7tkn-a; j7tkn-b; j7tkn-c; j7tkn-d; j7tkn-e; j7tkn-f d; j7tkn-e; j7tkn-f type setting range max. fuse size according to coordination-type fuse ul "2" *1 *1) coordination-type according to iec 947-4-1: iec 947-4-1: ? 2 ? : light contact welding accepted. thermal overload relay must not be damaged. ? 1 ? : welding of contactor and damage of the thermal overload relay allowed. "1" *1 dol star delta quick slow, gl(gg) g) slow, gl(gg) am a aa aaa a j7tkn-a j7tkn-b 0.12 - 0.18 -0.5 *2 *2) miniature fuse 0.5 *2 25 - 15 0.18 - 0.27 -1.0 *2 1.0 *2 25 - 15 0.27 - 0.4 -2225-15 0.4 - 0.6 -2225-15 0.6 - 0.9 -4425-15 0.8 - 1.2 -44252 15 1.2 - 1.8 -66252 15 1.8 - 2.7 - 101025 4 15 2.7 - 4 - 161025 415 4- 6 7 - 10.5 20 16 25 6 15 6- 9 10.5 - 15.5 35 25 35 10 25 8- 11 14-193525351630 10 - 14 18-2450356316 40 13 - 18 23-3150356320 50 17 - (23)24 30 - (40)41 63 50 63 25 60 (22)23 - (30)32 (38)40 - (52)55 80 63 80 35 70 j7tkn-c 28 - 42 48 - 73 100 80 150 50 110 j7tkn-d 40 - 52 70 - 90 160 100 150 63 200 52 - 65 90 - 112 160 125 150 80 250 60 - 74 104 - 128 160 125 150 80 250 for short circuit protecting overload relays with current transformer use fuse according to the contactor of the combination. j7tkn-e 60 - 90 104 - 156 300 80 - 120 140 - 207 - j7tkn-f all ranges -
56 thermal overload relay j7tkn tripping characteristics for j7tkn-a, j7tkn-b, j7tkn-c, j7tkn-d haracteristics for j7tkn-a, j7tkn-b, j7tkn-c, j7tkn-d b, j7tkn-c, j7tkn-d detailed tripping times for each range see table page 54 tripping characteristics for j7tkn-e aracteristics for j7tkn-e detailed tripping times for each range see table page 54 with three-phase load with two-pole load tripping time min. s f.l.c. multiplication factor average value of typical tolerance curves from cold condition proceeding from service conditions the times decrease to 20-30% of the characteristic values tripping time min. s k typical tolerance curve from cold condition proceeding from service conditions the times decrease to 70-80% of the characteristic values k= i max /i e i max = max. phase current i e = max. scale value with three-phase load with two-pole load tripping time min. s f.l.c. multiplication factor average value of typical tolerance curves from cold condition proceeding from service conditions the times decrease to 20-30% of the characteristic values tripping time min. s k typical tolerance curve from cold condition proceeding from service conditions the times decrease to 70-80% of the characteristic values k= i max /i e i max = max. phase current i e = max. scale value
thermal overload relay j7tkn 57 tripping characteristics for j7tkn-f g characteristics for j7tkn-f n-f detailed tripping times for each range see table page 54 position of terminals with three-phase load with two-pole load j7tkn-a j7tkn-b j7tkn-c; j7tkn-d tripping time min. s f.l.c. multiplication factor average value of typical tolerance curves from cold condition proceeding from service conditions the times decrease to 20-30% of the characteristic values tripping time min. s k typical tolerance curve from cold condition proceeding from service conditions the times decrease to 70-80% of the characteristic values k= i max /i e i max = max. phase current i e = max. scale value
58 thermal overload relay j7tkn thermal overload relays verload relays data according to iec 947-4-1, iec 947-5-1, vde 0660, en 60947-4-1, en 60947-5-1 660, en 60947-4-1, en 60947-5-1 type j7tkn-a j7tkn-b j7tkn-c j7tkn-d j7tkn-e j7tkn-f rated insulation voltage u nsulation voltage u i *1 *1) suitable for: earthed-neutral systems, overvoltage category i to iii, pollution degree 3 (standard-industry: uimp = 4kv (at 440v kv (at 440v), 6kv (at 690v). data for other conditions on request. v~ 690 690 690 690 750 690 permissible ambient temperature operation open c -25 to +60 storage c -50 to +70 trip class according to iec 947-4-1 10a 10a 10a 10a 20 20 cable cross-section main connector solid or stranded mm 2 0.75-6 + 0.75-2.5 *2 *2) maximum cable cross-section with prepared conductor 0.75-6 0,75-10 4-35 *2 *3 *3) without terminals, suitable for bushing one connector 70mm 2 (stranded) per phase *4 *4) busbar sets see accessories page 53 flexible mm 2 0.75-4 + 0.5-2.5 *2 1-4 0,75-6 6-25 *2 flexible with multicore cable end mm 2 0.5-2.5 + 0.5-1.5 0.75-4 0.75-6 4-25 cables per clamp number 1+1 2 2 1 auxiliary connector solid mm 2 0.75-2.5 *2 flexible mm 2 0.5-2.5 *2 flexible with multicore cable end mm 2 0.5-1.5 cables per clamp number 2 auxiliary contacts rated insulation voltage u i *1 same potential v~ 690 690 690 690 different potential v~ 440 440 250 440 utilization category ac15 rated operational current i e 24v a 5 3 4 *5 *5) switching capacity of the start contact: ac15 300va, max. 1.5a, dc13 (max. 220v) 30w, max. 1.5a 5 230v a 3 2 2.5 3 400v a 2 1 1.5 2 690v a 0.6 0.5 0.6 0.6 utilization category dc13 rated operational current i e 24v a 1.2 1 1.2 1.2 110v a 0.15 0.15 0.15 0.15 220v a 0.1 0.1 0.1 0.1 short circuit protection (without welding 1ka) highest fuse rating gl (gg) a 6 4 6 6 setting range a to 23 all 28-42 8-42 52-65 all - power loss per current path (max.) (max.) minimum setting value w 1.1 1.1 1.3 2.9 1.1 - maximum setting value w 2.3 2.3 3.3 4.5 2.5 -
thermal overload relay j7tkn 59 temperature compensation in case of higher ambient temperature use the following formula: (ambient temperature - 20) x 0.125 = correction factor in % of the full load motor current example: ambient temperature 70 c, full load motor current 7a (70 - 20) x 0.125 = 6.25% setting value: 7a + 6,25% = 7.44a data according to c ul us type j7tkn-a j7tkn-b j7tkn-c j7tkn-d j7tkn-e rated insulation voltage v~ 600 600 600 600 600 rated current a2332427485 auxiliary contacts rated voltage same potential v ac 600 600 600 600 600 different potential v~ 150 150 150 150 150 switching capacity ac va 500 500 600 600 600 of aux. contacts a 4 2 4 4 4
60 thermal overload relay j7tkn dimensions j7kna-09 + j7tkn-a j7kna-12 12 j7kn-10 + j7tkn-b j7kn-14 j7kn-18 j7kn-22 j7kn-10 + j7tkn-a j7kn-14 j7kn-18 j7kn-22 j7kn-24 + j7tkn-b j7kn-32 j7kn-40
thermal overload relay j7tkn 61 j7kn-24 + j7tkn-c j7kn-32 j7kn-40 j7kn-50 + j7tkn-d j7kn-62 j7kn-74 j7kn-85 + j7tkn-e j7kn-110 j7kn-150 + j7tkn-f j7kn-175 j7kn-200 + j7tkn-210
62 thermal overload relay j7tkn in the interest of product improvement, specifications are subject to change without notice. all dimensions shown are in millimeters. dimensions shown are in millimeters. to convert millimeters into inches, multiply by 0.03937. to convert grams into ounces, multiply by 0.03527. 27. cat. no. j509-e2-01

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