HGA261251 Schneider Electric Industrial Automation Components

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Square D by Schneider Electric HGA261251 is a Moulded Case Circuit Breaker (MCCB) within the PowerPacT HGA sub-range, featuring a PowerPact H-Frame 150 TMD 2P 125A 600Vac/500Vdc 18kA I-line AB 80% rated design. It has a 2-pole (2P) configuration with I-line connection (AB phases) and offers thermal protection (overload) and magnetic protection (short-circuit). The rated current is 125A, with a rated insulation voltage (Ui) of 750 V, and it operates at a rated voltage (AC) of 600Vac 600Y/347Vac. This MCCB is designed for mounting on I-line with line side isolated plug-on jaws plus a mechanical I-Line bracket mechanism, ensuring a robust attachment. It has a net height of 163 mm, a net width of 104 mm, and a net depth of 86 mm, with a degree of protection of IP40. The operating mode is manual toggle, and it features over-current protection fixed at 125A, short-circuit hold current fixed at 900A, and short-circuit trip current fixed at 1700A. The rated operating voltage (Ue) is 690 V, with a rated impulse voltage (Uimp) of 8 kV. The trip current rating is 125 AT, and the frame current rating is 150 AF. Its short circuit breaking rating varies with voltage, including 65kA at 240Vac, 35kA at 480Vac, 35kA at 480Y/277Vac, 18kA at 600Vac, 18kA at 600Y/347Vac, 20kA at 250Vdc, and 20kA at 500Vdc, all under UL489. The trip unit type is thermal-magnetic (fixed) with no display, and it falls under utilisation category A.