Bussmann 170M3694 Fuse

Bussmann 170M3694 is a 200 A, 1,250 V AC high-speed square-body fuse from Eaton’s Bussmann series. The device is rated for 1,250 V AC (with references noting 1,250/1,300 V operation) and offers a 100 kA interrupting rating in a compact square-body, stud-mount package measuring 59 mm tall by 45 mm wide by 156 mm deep. It carries a maximum watt-loss of 45 W at rated current and has an I²t rating of 9,200 A²·s, reflecting its fast-acting performance and ability to clear faults quickly in demanding circuits. This fuse is designed for protection of large power electronics and is commonly used in AC drives, power converters/rectifiers, and variable-speed drives. It is part of the 170M Bussmann family and is often cataloged alongside related variants such as 170M3744; the 170M3694 is intended for 1250 V class service with a high interrupt capacity to guard against short circuits without nuisance tripping in heavy equipment.