Description:
BS 88 style stud-mount fuses.

Ratings:
Volts: 690Vac/500Vdc
Amps: 6-20A
IR: 200kA RMS Sym.

Agency Information: CE, Designed and tested to: BS 88 Part 4, IEC 269 Part 4, UL Recognized. Consult Cooper Bussmann or Bolfmax for UL Recognition status.

Electrical Characteristics
Total Clearing I2t

The total clearing I2t at rated voltage and at power factor of 15% are given in the electrical characteristics. For other voltages, the clearing I2t is found by multiplying by correction factor, K, given as a function of applied working voltage, Eg, (rms).

Arc Voltage

This curve gives the peak arc voltage, UL, which may appear across the fuse during its operation as a function of the applied working voltage, Eg, (rms) at a power factor of  15%.

Power Losses

Watts loss at rated current is given in the electrical characteristics. The curve allows the calculation of the power losses at load currents lower than the rated current. The correction factor, Kp, is given as a function of the RMS load current, Ib, in % of the rated current.

Features and Benefits
• Excellent cycling capability
• Excellent DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss

Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters

Dimensions (mm)


Catalog Numbers

Catalog Numbers	Type	Rated Current RMS-Amps	I2t(A2 Sec)			Watts Loss
			Pre-arc	Clearing
				at 415V	at 660V
6CT	CT	6A	1.8	8.5	12	2
10CT		10A	7	30	48	3
12CT		12A	10	40	65	3
16CT		16A	16	66	110	7
20CT		20A	32	150	220	7

Time-Current Curve


Peak Let-Through Curve