LJL36400U44X Schneider Electric Industrial Automation Components

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Square D by Schneider Electric LJL36400U44X is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT LJL sub-range, designed as a PowerPact L-Frame 600 Micrologic 6.3A (LSIG) 3P 400A 600Vac with a 25kA rating and equipped with lugs on both load and line sides for connection. This 3-pole circuit breaker offers protection functions including Long-time (L), Short-time with fixed time delay (S), Instantaneous (I), Ground fault (G), and Zone Selective Interlocking (ZSI). It has a rated current of 400A, a rated insulation voltage of 750V, and operates at a rated voltage of 600Vac 600Y/347Vac and 250Vdc. The unit is designed for individual mounting on a plate, with dimensions of 382mm in height, 153mm in width, and 171mm in depth, and features an IP40 degree of protection. The operating mode is manual toggle, with protection settings adjustable for overload (L), short-circuit with time delay (S), instantaneous short-circuit (I), and earth fault (G). The rated operating voltage is 690V, with a rated impulse voltage of 8kV. The trip current rating is 400 AT, with a frame current rating of 600 AF, and short circuit breaking ratings of 100kA at 240Vac, 65kA at 480Vac and 480Y/277Vac, and 25kA at 600Vac and 600Y/347Vac according to UL489 standards. The trip unit features an electronic Micrologic 6.3A series with LSIG protection and an LCD display, capable of measuring current in phases and neutral, including RMS instantaneous current, average current, current unbalance, highest RMS current, ground fault current, and demand/peak current values with an adjustable calculation window of 5-60 minutes. It is categorized under utilisation category A.