Schneider LUCA12BL Motor Protection and Control Unit

Description

Schneider LUCA12BL Motor Protection and Control Unit

Product Overview

The Schneider Electric LUCA12BL is a standard electronic control unit belonging to the TeSys Ultra (TeSys U) modular starter series. Designed to plug directly into a TeSys Ultra power base (such as the LUB12, LUB32, LU2B12, or LU2B32), it provides basic motor protection and control capabilities for 3-phase AC asynchronous motors.

The LUCA12BL incorporates thermal overload protection (Class 10), short-circuit protection, phase-loss, and phase-unbalance protection within an adjustable setting range of 3 A to 12 A, powered by a 24 V DC control circuit.

Technical Specifications

Key Advantages

• Modular “Plug & Play” Architecture: Snaps directly into the TeSys Ultra power base without tools or external inter-wiring, significantly reducing panel assembly time.
• Wide Adjustment Ratio: Covers a wide current range (3 A to 12 A) in a single module, reducing stock keeping unit (SKU) complexity and inventory costs.
• Electronic Accuracy: Electronic thermal modeling provides higher precision, thermal memory, and immunity to ambient temperature fluctuations compared to traditional bimetallic relays.
• Compact Footprint: Combines protection, control, and measurement into a single ultra-compact housing, freeing up space inside control cabinets.
• Built-in Multi-Fault Diagnostics: Features dedicated protection against phase loss and phase imbalance to prevent premature motor winding burnouts.

Important Usage & Installation Precautions

• Power Base Compatibility: The LUCA12BL is a control unit only; it must be paired with an appropriate TeSys Ultra power base (e.g., LUB12 for up to 12 A applications) to form a complete motor starter.
• Control Voltage Verification: Ensure the control power supply delivered to the unit terminals is strictly 24 V DC. Applying AC voltage will damage the internal electronic circuitry.
• FLA Dial Adjustment: Set the front rotary dial accurately to the motor’s Full Load Amperage (FLA) as indicated on the motor nameplate before energizing.
• Thermal Class Limitation: The LUCA12BL is fixed at Class 10 tripping speed. If your application involves heavy inertia starting requiring Class 20 protection, choose an advanced control unit (such as the LUCB or LUCC series) instead.
• Safe Insertion: Always disconnect power to the main power base before inserting or removing the control module from the starter chassis.

Applications

• General Industrial Machinery: Ideal for direct-on-line (DOL) control of standard 3-phase induction motors driving conveyors, packaging machines, and machine tools.
• Pumps & Fluid Management: Control and thermal protection for centrifugal pumps, booster pumps, and water management units.
• HVAC & Ventilation Systems: Driving air handling units (AHUs), supply blowers, and industrial exhaust fans.
• Material Handling: Small hoists, sorting lines, and motorized roller systems requiring compact, panel-friendly motor starters.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

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