Description:
High speed fuses for the protection of DC circuits in equipment.

 

Ratings:

Volts:  1200Vdc

Amps:  160-420A

IR:  1200Vdc = 100kA L/R: 15 ms.
 

Agency Information: Consult Cooper Bussmann OR Bolfmax.
 

Electrical Characteristics

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.
 

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

Catalog Numbers

Fuse Type	Cat. Number	Electrical Characteristics
	-SKN/246 Type K Indicator	Rated Voltage	Rated Current RMS-Amp	Watt Loss (W)
1*SKN/246	170E3976	2000Vdc	10A	7
	170E3970		16A	11
	170E3950		20A	13
	170E3951		25A	17
	170E3952		32A	22
	170E3953		40A	27
	170E3954		50A	34
	170E3955		63A	43
	170E3956		80A	50
	170E3937		20A	13
	170E3938		25A	16
	170E3939		32A	20
	170E3940		40A	25
	170E3941		50A	32
	170E3942		63A	40
	170E3943		80A	51
	170E3944		100A	64
	170E3945		125A	80

Dimensions (mm):