Page 331 - ABB_Motor _Protection_and_Control_catalogue_20221216

ABB MOTOR PROTECTION AND CONTROL 3/255

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UA16..RA … UA110..RA 3-pole contactors for capacitor switching UA16..RA … UA110..RA 3-pole contactors for capacitor switching
Unlimited peak current Î Unlimited peak current Î
Technical data Technical data

Connecting characteristics 03
Contactor types AC operated UA16..RA UA26..RA UA30..RA UA50..RA UA95..RA
UA63..RA UA110..RA
UA75..RA
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 - - 2.5...16 + 2.5...6 mm² 6…25 + 6…16 mm² 6...35 mm²
Flexible with ferrule 1 x 0.75...2.5 mm² 1.5...4 mm² 2.5...10 mm² 6...35 mm² 10...70 mm²
2 x - - 2.5...10 + 2.5...4 mm² 6...16 + 6...10 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 / 53 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 1 or 2 x 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 M 3.5 M 4 M 5 M6 M8
Screwdriver type Flat Ø 5.5 / Pozidriv 2 Flat Ø 6.5 / Pozidriv 2 Hexagon socket
(s = 4 mm)
Coil terminals M 3.5
Screwdriver type Flat Ø 5.5 / Pozidriv 2
Built-in auxiliary terminals M 3.5 M 4 M 3.5 - -
Screwdriver type Flat Ø 5.5 / Pozidriv 2 - -
Other technical characteristics are the same as those of standard A contactors.