Schneider Electric DF143C TeSys DF Fuse Holder 3P 50 A 14x51 mm 690 V Fuse Holder

The Schneider Electric DF143C is a three-pole TeSys DF fuse carrier rated 50 A at 690 V AC/DC, built for 14x51 mm aM or gG fuse links fitted with a striker pin. The striker lets an early-break auxiliary contact module report a blown fuse before the operator opens the enclosure. Screw terminals handle 2.5-25 mm² conductors on 35 mm DIN rail, in a 79 mm wide housing, with short-circuit withstand of 120 kA at 400 V and 80 kA at 690 V.

Technical Specifications

Certifications & Standards

• IEC
• UL Recognized
• CSA
• EAC
• EN/IEC 60947-3
• EN/IEC 60269-2
• UL 4248-1
• CSA C22.2 No 4248-1

Selection Notes

Specify the DF143C instead of a plain 3P carrier when the panel needs remote indication of a blown fuse, since the striker-pin fuse links it accepts trip an add-on early-break auxiliary contact module rather than relying on visual inspection alone. The 50 A, 14x51 mm format carries the same rating as the single-pole version in this platform, scaled to three poles for three-phase feeds. Screw terminals rated for 2.5-25 mm² conductors keep the connection suited to the heavier cable typical of a 50 A three-phase branch.