Page 486 - Motor_protection_and_control_Manual_motor_starters_ contactors

UA95..RA … UA110..RA 3-pole contactors for capacitor switching

70 to 80 kvar - Unlimited peak current Î
AC operated

Description
UA..RA contactors for capacitor switching can be used for installations in which the peak current far ex-
ceeds 100 times nominal rms current. The contactors are delivered complete with their damping resistors
and must be used without additional inductances.
The capacitors must be discharged (maximum residual voltage at terminals ≤ 50 V) before being re-ener-
1SBC591444F0302 These contactors are of the block type design with:
gized when the contactors are making.
– 3 main poles
– the UA..RA contactors are fitted with a special front-mounted block, which ensures the serial insertion of
3 damping resistors into the circuit to limit the current peak on energization of the capacitor bank
- their connection also ensures capacitor precharging in order to limit the second current peak occurring
upon making of the main poles
UA110-30-00 RA - the insertion of resistors allows to damp the highest current peak of the capacitor when switching on,
whatever its level.
5 – control circuit: AC operated
– add-on auxiliary contact blocks for side mounting and a wide range of accessories.
Ordering details
IEC UL/CSA Rated control circuit Auxiliary Type Order code Weight
Rated operational Rated operational voltage contacts
power power Uc fitted Pkg
θ ≤ 40 °C θ ≤ 40 °C (1) (1 pce)
400 V 480 V
AC-6b V 50 Hz V 60 Hz kg
70 80 24 24 0 0 UA95-30-00RA 1SFL431024R8100 2.000
110 110…120 0 0 UA95-30-00RA 1SFL431024R8400 2.000
220…230 230…240 0 0 UA95-30-00RA 1SFL431024R8000 2.000
230…240 240…260 0 0 UA95-30-00RA 1SFL431024R8800 2.000
380…400 400…415 0 0 UA95-30-00RA 1SFL431024R8500 2.000
400…415 415…440 0 0 UA95-30-00RA 1SFL431024R8600 2.000
80 95 24 24 0 0 UA110-30-00RA 1SFL451024R8100 2.000
110 110…120 0 0 UA110-30-00RA 1SFL451024R8400 2.000
220…230 230…240 0 0 UA110-30-00RA 1SFL451024R8000 2.000
230…240 240…260 0 0 UA110-30-00RA 1SFL451024R8800 2.000
380…400 400…415 0 0 UA110-30-00RA 1SFL451024R8500 2.000
400…415 415…440 0 0 UA110-30-00RA 1SFL451024R8600 2.000
(1) Other control voltages see voltage code table.

Main dimensions mm, inches
155.6 6.13"
114.4 4.5"

6 0.24" +10"
148 5.83" 155.3 6.11" 75 mm EN/IEC 60715 47 1.85" +10 170 6.69"

10 0.39" 1SBC101553S0201 - Rev. A
90 3.54"
UA95..RA, UA100..RA

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