LDM36400CU44X Schneider Electric Industrial Automation Components

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Square D by Schneider Electric LDM36400CU44X is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT LDM sub-range, designed as a PowerPact L-Frame 600 Micrologic 6.3A (LSIG) 3P 400A 600Vac 14kA with a lug connection on the line side and a terminal nut kit for fixed busbar connection on the load side. It features three poles (3P) and offers protection functions including Long-time (L), Short-time with fixed time delay (S), Instantaneous (I), Ground fault (G), and Zone Selective Interlocking (ZSI). The rated current is 400A, with a rated insulation voltage (Ui) of 750V, and it operates at a rated voltage (AC) of 600Vac. This unit is designed for individual unit mount on plate, with dimensions of 382 mm in height, 153 mm in width, and 171 mm in depth. It has a degree of protection of IP40 and operates via a toggle (manual). Protection settings are adjustable, with L protection against overload adjustable from 0.3 to 1 x In (125A to 400A), S protection against short-circuit with time delay adjustable from 1.5 to 10 x Ir (600A to 4000A), I instantaneous protection against short-circuit adjustable from 1.5 to 12 x In (600A to 4800A), and G protection against earth fault adjustable at 0.2 to 1 x In (0.1 to 0.4s time delay). The rated operating voltage (Ue) is 690V, with a rated impulse voltage (Uimp) of 8kV. The trip current rating is 400 AT, with a frame current rating of 600 AF, and a short circuit breaking rating of 25kA at 240Vac, 18kA at 480Vac, and 14kA at 600Vac according to UL489. The trip unit type features electronic technology with a Micrologic 6.3A (LSIG) series, providing LSIG protection and an LCD display. Its measurement function includes current measurements for phases and neutral, RMS instantaneous current, current unbalance between phases, highest RMS current of the three phases, ground fault current, and demand/peak current values on all three phases plus neutral, with a calculation window adjustable between 5-60 minutes. The utilisation category is A.