Schneider Electric LUCA32BL

Spécifications techniques & Application Guide

1. Présentation du produit

Schneider LUCA32BL is a standard control unit from the TeSys Ultra series (formerly TeSys U series), a component of three-phase motor starters. It must be used with LUB series power bases (such as LUB32 / LUB38) to form a complete motor starting and protection system. It features thermal-magnetic protection and is suitable for industrial applications requiring basic motor protection including overload, court-circuit, perte de phase, phase imbalance, and earth fault protection.

2. Paramètres techniques de base

3. Caractéristiques
4. Protection complète: Surcharge, court-circuit, perte de phase, phase imbalance, and earth fault protection
5. Réinitialisation manuelle: Enables quick restart after fault clearance
6. Modbus Communication: Supports configuration and data transfer for remote monitoring and diagnostics
7. Flexible Mounting: Compatible with various TeSys Ultra power bases
8. Haute compatibilité: Suitable for utilization categories AC-41 / AC-43 / AC-44
9. Conception compacte: Saves cabinet space and increases mounting density
10. Applications

– General machinery including fans, pompes, and compressors

– Industrial line equipment such as conveyors and mixers

– Small factory automation systems

– Applications requiring basic motor protection with 24 VDC control signals

– Replacement for traditional thermal relay + contactor combinations, offering more reliable protection and easier installation

5. Operating Instructions
6. Installation Requirement: Must be used with a matching LUB series power base with correct electrical connections
7. Wiring Rules: Stable 24 VDC supply for control circuit; three-phase power for main circuit
8. Setting Recommendation: Adjust overload setting according to motor rated current within 8 A–32 A
9. Maintenance Note: Regularly check control unit status to ensure proper protection operation
10. Communication Setup: Configure Modbus parameters per manual if communication is required
11. Compatibility Information

Compatible Power Bases: TeSys Ultra series including LUB32 (32 UN), LUB38 (38 UN)

Remplacement: Can replace some traditional thermal relay + contactor assemblies with an integrated solution

Upgrade Path: For advanced functions such as built-in soft starting and energy monitoring, consider TeSys T or TeSys Giga series

The Schneider LUCA32BL is a cost-effective standard motor control unit. Avec son design compact, protection complète, et une large compatibilité, it is an ideal choice for starting and protecting three-phase motors in industrial automation, especially for cost-sensitive applications requiring basic protection.

TeSys Ultra (formerly TeSys U) Standard Control Unit Range & Power Bases

1. Complete List of Standard Control Units (LUCA Series)

TeSys Ultra standard control units use thermal-magnetic protection and provide overload, court-circuit, perte de phase, phase imbalance, and earth fault protection. They are only compatible with standard power bases (LUB series) and not with advanced bases (LUBxxx0 series). All models are Class 10, 3-pôle (3P.) three-phase devices.

Convention de dénomination des modèles

LUC: Prefix for TeSys Ultra control units

UN: Standard control unit (Advanced versions: C/D/M)

XX: Current range code (1X = 0.35–1.4 A, 05 = 1.25–5 A, 12 = 3–12 A, 18 = 4.5–18 A, 32 = 8–32 A)

Suffixe: BL = 24 VCC, ES = 48–72 V AC/DC, FU = 110–240 V AC/DC, B = 24 ACC

2. Complete List of Power Bases (LUB Series)

TeSys Ultra power bases are divided into standard bases (pas de suffixe) and advanced bases (suffixe 0), both 3P three-phase, for different control unit types.

2.1 Standard Power Bases (For LUCA Series Standard Control Units)

2.2 Advanced Power Bases (For LUCC / LUCD / LUCM Advanced Control Units)

2.3 Reversing Power Bases (For Reversing Control Units)

3. Key Matching Rules
4. Standard Control Unit (LUCA) + Standard Base (LUBxx): Basic motor protection with thermal-magnetic protection and standard control
5. Advanced Control Unit (LUCC/LUCD/LUCM) + Advanced Base (LUBxx0): Premium protection with diagnostics, communication, and extended functions
6. Control unit current range ≤ base rated current: par ex., LUCA32BL (8–32 A) may only be used with LUB32 (32 UN) or LUB38 (38 UN), not LUB12 (12 UN)
7. Control voltage is independent of main voltage: Control unit powered via terminals A1/A2 on the base, typically 24 VDC/AC, 48–72 V AC/DC, or 110–240 V AC/DC
8. Application Notes
9. Montage: Control unit plugs directly into power base and locks with a clip; no additional tools required
10. Protection: Basic protection including Class 10 surcharge, court-circuit (13 × Ir max), phase imbalance, perte de phase, and earth fault (equipment protection)
11. Communication: Supports Modbus (with optional communication module) for remote monitoring and diagnostics
12. Environnement: Température de fonctionnement -25 °C ~ +70 °C, suitable for most industrial environments

The combination of TeSys Ultra standard control units (LUCA series) and power bases (LUB series) provides a flexible and reliable solution for motor starting and protection, covering three-phase motors from 0.75 kW to 18.5 kW. Selection should be based on motor rated current, control voltage, and protection requirements to ensure safe and stable operation.