Daito Communication Apparatus Co., Ltd.

Special applications

For use as trigger fuses

It is possible to add an alarm function to a large capacity fuse by means of an alarm fuse.
In this case, connection must be as shown below, taking into consideration the increase in contact resistance between the large capacity fuse and the fuseholder.

Note : The steady-state current shunted from the large capacity fuse that flows through P405 should be kept within 0.35A.

Selection of Resistance
It is necessary to select a resistance in accordance with the following table.
When our products are used in circuits where their voltage rating is exceeded, they may be used in accordance with condition"b".

Circuit voltage		Resistance	Wattage	Type
a	max. 220V AC 250V DC	R<Rmax=(E-5V)/(2*0.5A) R>Rmin=Vd/0.35A-1.5ohm E : Circuit voltage Vd: Voltage drop of large capacity fuse	min 10W	Power type coated wire wound resietor
b	220V-440V AC 250V-500V DC	100ohm	min 10W	Power type coated wire wound resietor

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