Schneider LUB320 Non reversing power base

The Schneider Electric LUB320 is a 3-pole non-reversing power base for TeSys Ultra (TeSys U) motor starter applications, rated at 32 A with a maximum operational current of 28.5 A at up to 440 V AC. Designed for motor control and motor protection duties, it accepts plug-in control and protection modules from the TeSys U family and supports control voltages from 24 V up to 240 V AC/DC.

Technical specifications:

• Commercial reference: LUB320
• Manufacturer: Schneider Electric
• EAN:
• Series / range: TeSys Ultra (TeSys U)
• Product type: Non-reversing power base for motor starter applications
• Number of poles: 3P
• Thermally permissible current (Ith): 32 A
• Rated operational current (Ie): 28.5 A at 440 V AC, 23 A at 500 V, 21 A at 690 V
• Rated supply voltage (Ue): 690 V AC
• Network frequency: 40-60 Hz
• Utilisation categories: AC-41, AC-43, AC-44
• Service breaking capacity (Ics): 50 kA at 230/440 V, 10 kA at 500 V, 4 kA at 690 V
• Control circuit voltage (Uc): 24 V AC/DC, 48-72 V AC/DC, 110-240 V AC, 110-220 V DC
• Auxiliary contact composition: 1 NO + 1 NC
• Rated insulation voltage (Ui): 690 V per IEC 60947-6-2
• Rated impulse withstand voltage (Uimp): 6 kV per IEC 60947-6-2
• Mechanical endurance: 15 million operations
• Maximum operating cycle: 3600 cycles/h
• Mounting: DIN rail or screw (plate) mounting
• Power circuit connection: screw terminal blocks, 1-10 mm² rigid, 1-6 mm² flexible
• IP protection: IP20 (front panel and wired terminals), IP40 (front panel outside connection zone) per IEC 60947-1
• Operating temperature: -25 to 60 °C (with LUCM), -25 to 70 °C (with LUCA/B/C/D)
• Storage temperature: -40 to 85 °C
• Operating altitude: up to 2000 m
• Dimensions (W x H x D): 45 x 154 x 126 mm
• Weight: 0.865 kg
• Certifications: CE, UL, CSA, CCC, EAC, ASEFA, ATEX, Marine
• Standards: IEC/EN 60947-6-2, UL 60947-4-1, CSA C22.2 No 60947-4-1

Features and benefits:

• Accepts multiple TeSys U control and protection units (LUCA, LUCB, LUCC, LUCD, LUCM) for flexible motor starter configuration
• Wide control voltage range (24 V to 240 V AC/DC) enables integration into diverse control systems
• High service breaking capacity of 50 kA at 440 V provides robust short-circuit protection for demanding applications
• Safe separation of 400 V SELV between control, auxiliary, and main circuits per IEC 60947-1 Annex N
• Dual mounting options (DIN rail and plate screw fixing) for flexible panel installation
• ATEX and Marine certifications extend suitability to hazardous and marine environments

Applications:

• Direct-on-line (DOL) motor starting in industrial automation and machinery control panels
• Motor protection and control in manufacturing, process, and pump applications up to 32 A
• Building services motor control (fans, compressors, conveyors) requiring IEC AC-43/AC-44 duty
• Hazardous area motor control where ATEX-certified starters are required
• Marine and offshore motor control panels requiring Marine-certified components

Compliant with IEC/EN 60947-6-2, UL 60947-4-1, and CSA C22.2 No 60947-4-1. Part of the Schneider Electric TeSys Ultra range.

Also known as: Schneider LUB320, Schneider Electric LUB320, TeSys U power base 32A, TeSys Ultra non-reversing base.