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LUCB18BL

The Schneider Electric LUCB18BL is a TeSys U advanced control and diagnostic unit designed to be plugged into compatible TeSys U power bases (such as LUB320 and LUB380) to create a complete starter controller for three‑phase motors. It provides motor protection and diagnostic functions including overload, short‑circuit, phase loss, earth fault, and phase imbalance protection.

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Specifications Electrical Ratings Control circuit voltage (Uc): 24 V DC (used via A1/A2 terminals in power base) Rated motor current (Ir): 4.5 – 18 A (adjustable) Rated operational voltage (Ue): Up to 690 V AC, 3‑phase Motor power capability: • ~7.5 kW @ 400‑440 V AC • ~9 kW @ 500 V AC • ~15 kW @ 690 V AC Overload trip class: Class 10 (thermal protection) Short‑circuit and overcurrent: Short circuit ~13 × Irmax; overcurrent ~14.2 × Ir Protection Functions Overload protection (thermal trip) – adjustable via Ir range Short‑circuit protection – automatic Phase loss & phase imbalance protection – included Earth fault protection – included Insulation fault protection – equipment protection only Thermal overload alarm output – local (via LUFDA module) or remote (via LULC module) Test push‑button – overload simulation/testing Physical & Environmental Number of poles: 3 (three‑phase) Mounting: Front‑side plug‑in into compatible TeSys U power base Degree of protection: IP20 (front panel and wired terminals) Operating temperature: –25 °C to +70 °C Storage temperature: –40 °C to +85 °C Standards & Compliance When used with a compatible LUB power base, the unit is certified per: IEC 60947‑6‑2 UL 60947‑4‑1 CSA C22.2 CCC, EAC, Marine standards RoHS / REACh (Green Premium compliant) Typical Uses Protection and control of three‑phase motors within the 4.5–18 A range. Used in combination with TeSys U bases to form complete motor starter units for industrial automation. Provides advanced diagnostic and safety features beyond basic starter control