With the many Bussmann series semiconductor fuse varieties, Bussmann 170M series semiconductor fuses are the super star in all Bussmann fuses with at least 1,000,000PCS sold around the world yearly. The total selling quantities can go across the earth in 1 round. It's with sweet price, experience performance. widely used in Europe, USA etc countries.

The following describes this Bussmann series fuses reference systems in detail.

European standard square body high speed fuses

A typical fuse from the Bussmann series range of European square body fuses could have a catalog number like 170M3473. However, this will not give any guide to what ratings or mounting this fuse has. Here, the user will first need to know the ratings. However, the mounting is also of interest, so we use a Type Description to determine what style is in question. Fuses according to the German DIN 43620 standard are always listed by size. For example, DIN 3, DIN 00, etc. For other fuses, according to DIN 43653, flush-end types or special types, this description will reveal the actual type in question. For the reference given above, the type designation will be the following: 1*BKN/50 To interpret this Type Code we have made the following general guideline, that will cover most of the European fuses.

Position 1 — Primary code 

The primary code can be one of the following values:

Position 2 — Body size

The following tables show the various options for all characters in the above Type Code:

Position 3 — Optional 

Over the years, many square body fuses have been adapted to specific customer needs. Therefore, a lot of special, customized fuses are now a part of the product offering. Position 3 in the Type Code might therefore be an S for special. For all such references, please consult the Bussmann Division for a mechanical drawing, if this is not already at your disposal

Position 4 — Mechanical fixing

Position 5 — Indicator type

 Often a fuse will have an indicator to show if it has opened. Some indicators are built in and some have to be externally fitted. Indicators may also trigger optional microswitches for remote indication. On the indicator Position 5 in the Type Code, the following options are standard

Indicators Typower ZILOX fuses are available with three different indicator systems. Visual Indicator The indicator situated in one cover plate is clearly visible as soon as the fuse has operated. The minimum voltage for operating the indicator is 20V. Type T Indicator The indicator is situated on one cover plate with a cover plate tag to accommodate an auxiliary switch. The minimum voltage for operating the indicator is 20V. A special low voltage indicator (1.5V) is available on request. Type K Indicator This indicator is situated on the fuse body. It is covered by an adaptor for snap-on mounting of an auxiliary switch. The operating voltage of the indicator is 1.5V. As a matter of safety, the factory mounted adaptor must not be removed from the fuse.

Microswitch The Typower ZILOX fuses with either type T indicator or type K indicator can be equipped with a microswitch for remote electrical indication of fuse operations. All microswitches have one normally open and one normally closed contact. Ratings are 2A, 250 Vac.

Position 6 — Indicator position

The indicator position may vary from fuse to fuse. Standard mounting is the so called Position N (North) and alternative positions are E (East), W (West), and S (South):

Position 7 — Center distance 

Indicates center distance for mounting, or overall length of fuses with flush-end contacts, stated in millimeters

Should you have any questions, pls feel free to ask us at:

ab@bussmannpower.com

ABPower