SF 70 / SQ 72 Traction Fuse Bases for Protistor® Fuse Links

Traction-design mounting bases for Protistor® square-body fuse-links: SF70BS (cat. no. Z098876) for size 70 and SQ72BSTRAC (cat. no. T098986) for size 72. The base and fuse-link form a replaceable fuse assembly for installation in rail-vehicle boxes and equipment compartments.

SQ72BSTRAC (T098986): insulation voltage Ui = 2500 V (AC 50/60 Hz and DC), current rating 400 A, dielectric withstand 18 kV RMS/1 min (50/60 Hz) and 20 kV impulse (1.2/50 µs), UL 94 V-0 flammability class, weight 1065 g. Fuse-link on the base: M8 bolts, torque up to 22 Nm; base to structure: M8 bolts, torque 10 Nm ±2. The datasheet covers only the SQ family - parameters for SF70BS are available on request.

Key features:

• SF70BS (Z098876) for size 70 and SQ72BSTRAC (T098986) for size 72
• SQ72BSTRAC: insulation voltage Ui = 2500 V AC/DC, current rating 400 A
• Dielectric withstand 18 kV RMS/1 min and 20 kV impulse (1.2/50 µs)
• UL 94 V-0 flammability class, weight 1065 g
• Fuse-link to base - M8 bolts, torque up to 22 Nm; base to structure - M8, 10 Nm ±2