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Description


KTI AC contactors are designed for using in systems managing actuation and shutting down three-phase asynchronous motors equipped with a short-circuited rotor for the applied voltage limited to 660V (AC). They also can be applied for turning on and shutting down other electric installations: lighting, heating units and various inductive loads. KTI contactors are used in fans, pumps, furnaces, overhead-track hoists and automated load transfer systems.

For the efficiency of engineering solution, high exploitation characteristics and operational reliability, the contactor was awarded silver medal of the 15th International Exhibition Electro-2006 in nomination Best Electric Equipment.

According to its constructive and technical features, KTI AC contactors meet the requirements of international standards EN 60947-1, EN 60947-4-1, EN 60947-5-1.

Range


  Name Rated operating current, A (AC-3) Rated control coil voltage, V Number and type of contacts Package amount, pcs. Product ID
multiple transport
KTI-5115 115 230V/-3 IEK 115 230 1NO   4 KKT50-115-230-10
KTI-5115 115 400V/-3 IEK 115 400 1NO   4 KKT50-115-400-10
KTI-5150 150 230V/-3 IEK 150 230 1NO   4 KKT50-150-230-10
KTI-5150 150 400V/-3 IEK 150 400 1NO   4 KKT50-150-400-10
KTI-5185 185 230V/-3 IEK 185 230 1NO   4 KKT50-185-230-10
KTI-5185 185 400V/-3 IEK 185 400 1NO   4 KKT50-185-400-10
KTI-5225 225 230V/-3 IEK 225 230 1NO   2 KKT50-225-230-10
KTI-5225 225 400V/-3 IEK 225 400 1NO   2 KKT50-225-400-10
KTI-5265 265 230V/-3 IEK 265 230 1NO   2 KKT50-265-230-10
KTI-5265 265 400V/-3 IEK 265 400 1NO   2 KKT50-265-400-10
KTI-5330 330 230V/-3 IEK 330 230 1NO   2 KKT50-330-230-10
KTI-5330 330 400V/-3 IEK 330 400 1NO   2 KKT50-330-400-10
KTI-6400 400 230V/-3 IEK 400 230 1NO 1 2 KKT60-400-230-10
KTI-6400 400 400V/-3 IEK 400 400 1NO 1 2 KKT60-400-400-10
KTI-6500 500 230V/-3 IEK 500 230 1NO 1 2 KKT60-500-230-10
KTI-6500 500 400V/-3 IEK 500 400 1NO 1 2 KKT60-500-400-10
KTI-7630 630 230V/-3 IEK 630 230 1NO 1 1 KKT70-630-230-10
KTI-7630 630 400V/-3 IEK 630 400 1NO 1 1 KKT70-630-400-10
KTI-51153 reversing contactor 115 230V/-3 IEK 115 230 2NO     KKT53-115-230-10
KTI-51153 reversing contactor 115 400V/-3 IEK 115 400 2NO     KKT53-115-400-10
KTI-51503 reversing contactor 150 230V/-3 IEK 150 230 2NO     KKT53-150-230-10
KTI-51503 reversing contactor 150 400V/-3 IEK 150 400 2NO     KKT53-150-400-10
KTI-51853 reversing contactor 185 230V/-3 IEK 185 230 2NO     KKT53-185-230-10
KTI-51853 reversing contactor 185 400V/-3 IEK 185 400 2NO     KKT53-185-400-10
KTI-52253 reversing contactor 225 230V/-3 IEK 225 230 2NO     KKT53-225-230-10
KTI-52253 reversing contactor 225 400V/-3 IEK 225 400 2NO     KKT53-225-400-10
KTI-52653 reversing contactor 265 230V/-3 IEK 265 230 2NO     KKT53-265-230-10
KTI-52653 reversing contactor 265 400V/-3 IEK 265 400 2NO     KKT53-265-400-10
KTI-53303 reversing contactor 330 230V/-3 IEK 330 230 2NO     KKT53-330-230-10
KTI-53303 reversing contactor 330 400V/-3 IEK 330 400 2NO     KKT53-330-400-10
KTI-64003 reversing contactor 400 230V/-3 IEK 400 230 2NO 1 1 KKT63-400-230-10
KTI-64003 reversing contactor 400 400V/-3 IEK 400 400 2NO 1 1 KKT63-400-400-10
KTI-65003 reversing contactor 500 230V/-3 IEK 500 230 2NO 1 1 KKT63-500-230-10
KTI-65003 reversing contactor 500 400V/-3 IEK 500 400 2NO 1 1 KKT63-500-400-10
KTI-76303 reversing contactor 630 230V/-3 IEK 630 230 2NO 1 1 KKT73-630-230-10
KTI-76303 reversing contactor 630 400V/-3 IEK 630 400 2NO 1 1 KKT73-630-400-10

Advantages


  • Simplicity of engineering solution ensures convenience in servicing the compound elements.
  • Contactor base is made of aluminum profile providing for extra durability and lower weight as compared to the similar products.
  • Wide range of auxiliary devices available at the warehouse (PKI attachments, PVI time-delay attachments, RTI thermal electrical relay).
  • Extended range of KTI AC contactors as compared to the analogous Russian manufacturers.

Design Features


There is one NO contact group built in the control coil module in the circuit of every contactor. Owing to the push-button control station, this provides for assembling a simple control circuit. Checking the contact system operation is performed using a standard box wrench head 10.
Upper lid is fixed with locking screws. It excludes spontaneous unfastening. Thus, KTI AC contactors can be installed in places with continuous operational vibration. Contact system status indicator is brought to the external panel of side cover. It provides for checking the operation group position without disassembling the contactor.
Indication (factory notches) on the terminals allows determining their wear degree. Contactors’ construction permits installation of two auxiliary add-on devices in any set at the same time.
Improved design of the control coil provides for its dismounting without using a special tool (by means of depressing the plunger). Factory assembled reverse contactor is supplied with factory buses and mechanical blocking system. Contactors are installed onto two metal rails that ensure high structure rigidity. KTI series reverse contactors represent a separate group in the company’s range.
Contact pieces are coated with silver providing for using them in continuous running duty. Welding depositions on the contact pieces are made of silver-based composite materials providing for lowering contact resistance if the temperature rises.    

Technical Features


Features KTI-5115 KTI-5150 KTI-5185 KTI-5225 KTI-5265 KTI-5330 KTI-6400 KTI-6500 KTI-7630
Rated operating AC voltage Ue, V 230; 400; 660
Rated insulation voltage Ui, V 1000 1000 1000 1000 1000 1000 1000 1000 1000
Rated operating current Ie, application category AC-3 (Ue≤400V), A 115 150 185 225 265 330 400 500 630
Conventional thermal current Ith (t≤40C), application category AC-1, A 200 250 275 315 350 400 500 700 1000
Rated power for AC-3, kW 230V 30 40 55 63 75 100 110 147 200
400V 55 75 90 110 132 160 200 250 335
660V 80 100 110 129 160 220 280 335 450
Max. short-time load (t≤1s), A 920 1200 1480 1800 2120 2640 3200 4000 5040
Conditional short-circuit current Inc, A 5000 10000 10000 10000 10000 18000 18000 18000 18000
Overcurrent protection fuse gG, A 200 250 315 315 400 500 500 800 1000
Intermittent duty, operation cycles per hour 120 120 120 120 120 120 120 120 120
Power dissipated at Ie, W/pole -3 5 8 12 16 21 31 42 45 48
-1 15 22 25 32 37 44 65 88 120


Technical features of KTI control circuit

Features KTI-5115 KTI-5150 KTI-5185 KTI-5225 KTI-5265 KTI-5330 KTI-6400 KTI-6500 KTI-7630
Rated control coil voltage Uc, V- 230; 400  
 
Control voltage ranges tripping (0,8+1,1)* Uc  
 
release (0,35+0,55)*Uc  
 
Coil power consumption at Uc, VA tripping cos φ = 0,3 550 550 800 800 650 650 1075 1100 1650
hold cos φ = 0,75 45 45 55 55 10 10 15 18 22
Tripping time, ms closure 23+35 23+35 20+35 20+35 40+65 40+65 40+75 40+75 40+80
opening 5+15 5+15 7+15 7+15 100 + 170 100+170 100+170 100+170 100+200
Switching wear resistance, mln. cycles -3 0,8 0,8 0,8 0,7 0,7 0,6 0,5 0,5 0,4
-1 0,5 0,5 0,5 0,4 0,4 0,3 0,3 0,3 0,25
Mechanical wear resistance, mln. comm. cycles 1 1 1 1 1 1 0,8 0,8 0,8
Dissipated power, W/pole 12+16 12+16 18+24 18+24 8 8 14 18 20

Overall Dimensions


KTI-5115 ... KTI-5330

Type Dimensions, mm.
Q Q1 S d f b b1 M N c L G G1 Y
KTI-5115 163,5 37 29,5 60 20 6 131 162 137 147 124 171 107 80 106 44
KTI-5150 163,5 40 26 57,5 20 8 131 170 137 150 124 171 107 80 106 44
KTI-5185 168,5 40 29 59,5 20 8 130 174 137 154 127 181 113,5 80 111 44
KTI-5225 168,5 48 21 51,5 25 10 130 197 137 172 127 181 113,5 80 111 44
KTI-5265 201,5 48 39 66,5 25 10 147 203 145 178 147 213 141 96 140 38
KTI-5330 213 48 43 74 25 10 147 206 145 181 158 219 145 96 154 38

KTI-6400, KTI-6500

Type Dimensions, mm.
Q Q1 S f b 1 M N c L G G1 Y
KTI-6400 213 48 43 74 25 151 206 209 181 158 219 145 80 170 19,5
KTI-6500 233 55 46 77 30 169 238 209 208 172 232 146 80 170 39,5

KTI-7630

KTI-51153 ... KTI-53303

Type Dimensions, mm.
1 Q1 S d f b b1 M c L G J Y
KTI-51153 346 37 78 60 20 6 131 162 137 147 171 107 80 72 57
KTI-51503 346 40 72 57,5 20 8 131 170 137 150 171 107 80 72 57
KTI-51853 357 40 78 59,5 20 8 130 174 137 154 181 113,5 80 78 59,5
KTI-52253 357 48 62 51,5 25 10 130 197 137 172 181 113,5 80 78 59,5
KTI-52653 424 48 99 66,5 25 10 147 203 145 178 213 141 96 109 61,5
KTI-53303 445 48 105 74 25 10 147 206 145 181 219 145 96 122 65,5

KTI-64003, KTI-65003

Type Dimensions, mm.
1 Q1 S f b b1 M c L Y
KTI-64003 445 48 105 74 25 151 206 209 181 219 145 19,5
KTI-65003 485 55 111 77 30 169 238 209 208 232 146 39,5

KTI-76303

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