Page 337 - ABB_Motor _Protection_and_Control_catalogue_20221216

ABB MOTOR PROTECTION AND CONTROL 3/261

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UA16 … UA110 3-pole contactors for capacitor switching

Peak current Î ≤ 100 times the rms current
Technical data

Connecting characteristics 03
Contactor types AC operated UA16 UA26 UA30 UA50 UA95
UA63 UA110
UA75
Connection capacity (min. ... max.)
Main conductors (poles)
Rigid Solid (≤ 4 mm²) 1 x 1...4 mm² 1.5...6 mm² 2.5...16 mm² 6...50 mm² 10...95 mm²
Stranded (≥ 6 mm²) 2 x 1...4 mm² 1.5...6 mm² 2.5...16 mm² 6...25 mm² 6...35 mm²
Flexible with ferrule 1 x 0.75...2.5 mm² 0.75...4 mm² 2.5...10 mm² 6...35 mm² 10...70 mm²
2 x 0.75...2.5 mm² 0.75...4 mm² 2.5...10 mm² 6...16 mm² 6...35 mm²
Bars or lugs L ≤ 7.7 mm 10 mm - - -
l L
l > 3.7 mm 4.2 mm - - -
Connection capacity acc. to UL/CSA 1 or 2 x AWG 18...10 AWG 12...8 AWG 8...4 AWG 8...1 AWG 6...2/0
Tightening torque Recommended 1 Nm / 9 Ib.in 1.7 Nm / 15 Ib.in 2.3 Nm / 20 Ib.in 4 Nm / 35 Ib.in 8 Nm / 71 Ib.in
Max. 1.2 Nm 2.2 Nm 2.6 Nm 4.5 Nm 9 Nm
Auxiliary conductors
(built-in auxiliary terminals + coil terminals)
Rigid Solid/Stranded 1 x 1...4 mm² 0.75…2.5 mm²
2 x 1...4 mm² 0.75…2.5 mm²
Flexible with ferrule 1 x 0.75...2.5 mm² 1…2.5 mm² 0.75…2.5 mm²
2 x 0.75...2.5 mm²
Lugs Coil terminals L ≤ 8 mm
l L
l > 3.7 mm
Built-in auxiliary L ≤ 7.7 mm 10 mm 8 mm - -
terminals l > 3.7 mm 4.2 mm 3.7 mm - -
Connection capacity acc. to UL/CSA AWG 18...14
Tightening torque
Coil terminals Recommended 1 Nm / 9 Ib.in
Max. 1.2 Nm
Built-in auxiliary terminals Recommended 1 Nm / 9 Ib.in
Max. 1.2 Nm
Degree of protection
acc. to IEC 60947-1 / EN 60947-1
and IEC 60529 / EN 60529
Main terminals IP20 IP10
Coil terminals IP20
Built-in auxiliary terminals IP20 - -
Screw terminals Delivered in open position, screws of unused terminals must be tightened
Main terminals M3.5 M4 M5 M6 M8
Screwdriver type Flat Ø 5.5 / Pozidriv 2 Flat Ø 6.5 / Pozidriv 2 Hexagon socket
(s = 4 mm)
Coil terminals M3.5
Screwdriver type Flat Ø 5.5 / Pozidriv 2
Built-in auxiliary terminals M3.5 M4 M3.5 - -
Screwdriver type Flat Ø 5.5 / Pozidriv 2 - -
Other technical characteristics are the same as those of standard A contactors.