Description:
Square body flush end contact high speed fuses.

Ratings:
Volts: 690Vac
Amps: 1000-4000A
IR: 200kA RMS Sym.

Agency:
CE, Designed and tested to IEC 60269: Part 4, UL Recognized.

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

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

Dimensions (mm)
Type 4B/-, 4BKN/-, 4G/-, 4GKN/-



Catalog Numbers

Catalog Numbers				Size	Electrical Characteristics
-/80 Visual Indicator	-BKN/ Type K Indicator for Micro	-G/  Visual Indicator	-GKN/ Type K Indicator for Micro		Rated Current RMS-Amps		I2t(A2 Sec)		Watts Loss
					Norm Cool.	Llquld Cool.	Pre-arc	Clearing at 660V	Norm Cool.	Llquld Cool.
170M7058	170M7078	170M7098	170M7118	4	1000A	1350A	76000	505000	175	315
170M7059	170M7079	170M7099	170M7119		1250A	1700A	145000	965000	195	355
170M7060	170M7080	170M7100	170M7120		1400A	1900A	205000	1400000	205	375
170M7061	170M7081	170M7101	170M7121		1600A	2200A	305000	2050000	220	405
170M7062	170M7082	170M7102	170M7122		2000A	2700A	600000	3950000	245	445
170M7063	170M7083	170M7103	170M7123		2500A	3400A	1200000	7800000	275	495
170M7064	170M7084	170M7104	170M7124		3000A	4100A	2000000	13500000	305	555
170M7065	170M7085	170M7105	170M7125		3500A	4700A	3250000	22000000	325	585
170M7066	170M7086	170M7106	170M7126		†4000A	†5400A	4700000	†8000000	355	640

†Rated voltage (IEC) 500V.
• Watts loss provided at rated current.
• Liquid Cool. = Liquid cooling. Temperature on the terminals not to exceed 60°C.
• Microswitch indicator ordered separately.

Time-Current Curve

Peak Let-Through Curve