Schneider Electric LUCB05BL | Advanced Control Unit

The Schneider Electric LUCB05BL is an advanced control unit from the TeSys Ultra range, designed for motor control, protection, and diagnostics. It provides overload, short-circuit, and earth fault protection with a manual reset function. The unit operates with three-phase motors and is compatible with multiple power bases and reversing contactor breakers.

Key Features

Motor Protection & Control: Overload, short-circuit, and phase failure protection.
Advanced Diagnostics: Earth fault detection and phase imbalance protection.
Wide Voltage Compatibility: Rated operational voltage of 690V AC at 40-60 Hz.
Adjustable Motor Current Range: 1.25 – 5 A.
Thermal Overload Protection: Class 10 per IEC 60947-6-2 and UL 508 standards.
Plug-in Design: Quick and easy installation with front-face connectivity.
Global Certifications: CE, UL, CSA, CCC, EAC, ASEFA, ATEX, Marine certified.
Robust Environmental Resistance: Operates at temperatures -25°C to 70°C with high shock and vibration resistance.

Technical Specifications

General Information

Description	Value
Range	TeSys Ultra
Product Name	TeSys Ultra
Device Short Name	LUCB05BL
Product Type	Advanced Control Unit
Application	Motor Control & Protection
Utilization Category	AC-41, AC-43, AC-44
Motor Power	1.5 kW (400-440V AC), 2.2 kW (500V AC), 3 kW (690V AC)
Rated Operational Voltage [Ue]	690V AC
Control Circuit Voltage [Uc]	24V DC
Control Voltage Limits	20-27V DC (operation), 14.5V DC (drop-out)
Motor Current Adjustment Range	1.25 – 5 A

Protection & Safety

Protection Type	Availability
Overload Protection	✔
Short-Circuit Protection	✔
Earth Fault Protection	✔
Phase Failure & Imbalance Detection	✔
Thermal Overload Class	Class 10 (40-60 Hz, IEC 60947-6-2, UL 508)
Impulse Withstand Voltage [Uimp]	6 kV
Insulation Voltage [Ui]	690V (IEC 60947-6-2), 600V (UL 60947-4-1)
IP Rating	IP20 (front panel & wired terminals), IP40 (outside connection zone)

Compatibility & Connections

Compatible Power Bases	Compatible Reversing Contactors
LUB12, LUB32, LUB38	LU2B12BL, LU2B32BL, LU2B38BL
LUB120, LUB320, LUB380	–

Electrical Performance

Description	Value
Typical Current Consumption	130 mA (LUB12), 220 mA (LUB32/LUB38)
Heat Dissipation	2W (LUB12), 3W (LUB32/LUB38)
Operating Time	35ms (Opening), 70ms (Closing)

Environmental Conditions

Condition	Value
Operating Temperature	-25°C to 70°C (-13°F to 158°F)
Storage Temperature	-40°C to 85°C (-40°F to 185°F)
Operating Altitude	Up to 2000m (6561 ft)
Humidity	0-95% (Non-Condensing)
Fire Resistance	IEC 60695-2-12 (1760°F / 960°C)