Page 72 - Ferraz semiconductor DIN

Semiconductor fuses
Semiconductor (AC) fuses

Protistor Square-body Fuses
®
PSC aR sizes 3x - 450V to 700 VAC
Main characteristics

450 TO 700VAC / 63 TO 2800A Recognized

2
Exceptionally low I T, Watt losses.
Non-magnetic construction,
Highly reliable low voltage
Trip-indicator system, conformity to UL,
IEC, DIN and VDE standards.
Increased technical performance
• Highter ratings
• Reduction in volume and weight

This fuse preselection table indicates, for each size:

- rated current (or rating) In
2
- pre-arcing I t (I tp) at 1 ms
2
2
- total operating I t (I tt) at 660 V, f=50Hz cos ϕ=0.15, and for a total operating time from 8 to 10 ms
2
- dissipated power Pn at the rated current In, and at 0.8 In, in steady state
- breaking capacity at various voltages, checked by tests
made in accordance with IEC and American standards.

SCAC68 12/04