LC1F5004 datasheet(21/252 Pages) ETC2

21 / 252 page

TeSys™ IEC-Style Contactors and Starters Selection Guide

Contactor Selection for Utilization Category AC-3

01/04

Use in Category AC-3 (Ve

≤ 440 Vac)

Operational power in kW-50 Hz.

Example: Asynchronous motor with P = 132 kW – Ve = 380 V – Ie = 245 A – Ic = Ie = 245 A; or

Asynchronous motor with P = 132 kW – Ve = 415 V – Ie = 240 A – Ic = Ie = 240 A.

1.5 million operating cycles required.

The above selection curves show the contactor rating needed: LC1F330.

Use in Category AC-3 (Ve = 660/690 Vac)

Example: Asynchronous motor with P = 132 kW – Ve = 660 V – Ie = 140 A – Ic = Ie = 140 A.

1.5 million operating cycles required.

The above selection curves show the contactor rating needed: LC1F330.

Control of 3-phase

asynchronous squirrel

cage motors with

breaking while

running.

The current broken

(Ic) in category AC-3

is equal to the rated

operational current

(Ie) of the motor.

Use motor full-load

current on horizontal

axis for selection

purposes.

100

400

800

200

600

0.4

0.8

1.5

220 V

230 V

380 V

400 V

440 V

0.6

Control of 3-phase

asynchronous squirrel

cage motors with

breaking while

running.

The current broken

(Ic) in category AC-3

is equal to the rated

operational current

(Ie) of the motor.

Use motor full-load

current on horizontal

axis for selection

purposes.

0.6

0.8

1.5

80 90 100

400

200

118

129

170

220

305 355

0.4

660 V

690 V

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