Page 484 - Motor_protection_and_control_Manual_motor_starters_ contactors

UA16..RA … UA30..RA 3-pole contactors for capacitor switching

12.5 to 30 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
exceeds 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-energized
1SBC587794F0301 when the contactors are making.
These contactors are of the block type design with:
– 3 main poles and 1 built-in auxiliary contact
– 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
UA16-30-10RA
upon making of the main poles
- 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 kvar V 50 Hz V 60 Hz kg
1SBC587774F0301 12.5 16 24 24 1 1 0 0 UA16-30-10RA 1SBL181024R8110 0.460
kvar
1SBL181024R8410
0.460
UA16-30-10RA
110
110…120
220…230
UA16-30-10RA
240…260
1SBL181024R8810
0.460
230…240 230…240 1 1 0 0 UA16-30-10RA 1SBL181024R8010 0.460
380…400 400…415 1 0 UA16-30-10RA 1SBL181024R8510 0.460
400…415 415…440 1 0 UA16-30-10RA 1SBL181024R8610 0.460
UA30-30-10RA
22 22 24 24 1 0 UA26-30-10RA 1SBL241024R8110 0.710
110 110…120 1 0 UA26-30-10RA 1SBL241024R8410 0.710
220…230 230…240 1 0 UA26-30-10RA 1SBL241024R8010 0.710
230…240 240…260 1 0 UA26-30-10RA 1SBL241024R8810 0.710
380…400 400…415 1 0 UA26-30-10RA 1SBL241024R8510 0.710
400…415 415…440 1 0 UA26-30-10RA 1SBL241024R8610 0.710
30 28 24 24 1 0 UA30-30-10RA 1SBL281024R8110 0.810
110 110…120 1 0 UA30-30-10RA 1SBL281024R8410 0.810
220…230 230…240 1 0 UA30-30-10RA 1SBL281024R8010 0.810
230…240 240…260 1 0 UA30-30-10RA 1SBL281024R8810 0.810
380…400 400…415 1 0 UA30-30-10RA 1SBL281024R8510 0.810
400…415 415…440 1 0 UA30-30-10RA 1SBL281024R8610 0.810
(1) Other control voltages see voltage code table.

Main dimensions mm, inches
126.3 4.97" 141 5.55"
87.3 3.44" 102 4.02"
107 4.21"
68 2.68"
9 0.35" 9 0.35"
5.5 0.22"
35 mm EN/IEC 60715 +10 120 4.72" +10 +10 1SBC101507S0201 - Rev. A
74 2.91" 47 1.85" +.394" 90 3.54" 35 mm EN/IEC 60715 47 1.85" 120 4.72" +.394" 90 3.54" 35 mm EN/IEC 60715 47 1.85" 130 5.12" +.394"
4 0.16" 4 0.16" 4 0.16"
54 2.13"
44 1.73" 54 2.13"
UA16..RA UA26..RA UA30..RA
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