The Schneider Electric G12E4F63 is a GoPact MCCB 125 molded case circuit breaker, 4-pole, rated 63 A at 40 °C with a TM-D thermal-magnetic trip unit. It breaks 15 kA at 415 V AC (50/60 Hz) per EN/IEC 60947-2, Category A — meaning it is not current-limiting and coordinates downstream with selective short-time delays. The 4D protected poles (neutral fully protected at 1 x Ir) suit it for distribution panels where a solid neutral is required.
Fixed backplate mount, 100 mm wide x 130 mm high x 60 mm deep. Screw terminals front-connected top and bottom on a 25 mm pitch — standard for panelboard busbar stabs. Neutral sits on the left; toggle control. Mount flat on the back, horizontal or vertical — no derating for orientation.
Electrical durability and isolation
Rated for 8000 electrical cycles at full load (415 V, In) and 30000 mechanical cycles — typical for a distribution-grade MCCB. Power dissipation per pole is 18.7 W at rated current — factor into enclosure thermal calculations for multi-pole installations.