Datasheet

30
Technical data
Contactor Type 3TK50 3TK52 3TK54 3TK56
Mechanical Endurance (make/break operations) Oprns 10 million
Electrical Endurance in acc. with ACI duty at Ie Oprns 0.5 million
(make/break operations)
Rated insulation voltage Ui V 1000
Permissible ambient temperature storage °C -55 to +80
service °C -25 to +55
Rated impulse withstand voltage Uimp KV 8
Rating of contactors for AC loads
AC-1 duty, switching resistive load
Raed operational current le 40 deg C upto 690V A 200 340 400 530
55 deg C upto 690V A 190 315 380 500
Rating of three-phase loads
p.f = 1 at 55 deg C 415V kW 125 207 250 329
500V kW 164 272 329 433
690V kW 217 360 434 571
AC-2 and AC-3 duty
Rated operational current le upto 690V A 85 105 138 170
Maximum rating of slipring or squirrel cage
motors at 50/60Hz 415V kW 45 55 75 90
500V kW 59 72 98 118
690V kW 78 96 130 156
Thermal loading 10 s current A 990 1450 1725 2300
Power loss per current path at le/AC3 W 13 19 30 38
Switching frequency z
(contactors without overload relay) No load AC 1/hr 5000 5000 3000 3000
at AC1 1/hr 650 650 650 650
at AC3 1/hr 1000 1000 1000 1000
Coil ratings
AC operation 50Hz closing VA 550 910 1430 2450
p.f 0.45 0.38 0.34 0.21
closed VA 39 58 84 115
P.f 0.24 0.26 0.24 0.33
Coil voltage tolerances 0.8 to 1.1 x Us
Operating times at 1.0 X Us
AC operation closing time ms 22 to 37 25 to 40 25 to 40 25 to 40
opening time ms 8 to 30 10 to 30 10 to 30 8 to 20
Short circuit protection of contactors
Main circuit Co-ordination
Type 1 A 315 355 500 800
Type2 A 250 350 500 500