DIN80-000 Size 000 Offset Tag Ultra Rapid aR - Microswitch facility
16 - 160 Amps
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VIC - HEAD OFFICE / WAREHOUSE
4 / 1-7 Friars Road
Moorabbin VIC 3189
NSW - SALES OFFICE / WAREHOUSE
29/8-10 Barry Road
Chipping Norton NSW 2170
QLD - SALES OFFICE
1 / 26 Duke Street
Sunshine Beach QLD 4567
WA - SALES OFFICE
67 Howe Street
Osborne Park WA 6017
PO Box 1425 Moorabbin Vic 3189
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- For all orders over $100 (excl. GST & freight), freight is FIS (Free into Store).
- For all orders under $100 (excl. GST & freight), a freight charge of $25 + GST is applicable.
- Additional fees may apply for deliveries to the Northern Territory and remote areas.
All Other Products
- Freight charges POA (Price on Application)
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Semiconductor fuses are fuses that have been specifically designed to protect semiconductor devices. They are often also referred to as solid state fuses, rectifier fuses or ultra-rapid fuses. Semiconductor devices are extremely sensitive to current fluctuations and require special protection. To perform this function, semiconductor fuses are able to open the circuit (blow) significantly quicker than other fuse types, and it is extremely important that they are replaced by direct equivalents when required. Semiconductor fuses belong to the utilisation categories aR, gR and gS.
The I²t value of a fuse is a measure of the energy which is required to open the fuse element and to interrupt the current. It is determined by factors such as the design of the fuse element, the type of filler, etc. The I²t value is also a direct measure for the let-through energy which is exposed to the item being protected by the fuse in case of an over-current situation. It is a function of current squared and time, hence it is expressed in A²s (amps x amps x seconds).
Semiconductor fuses are not selected like other fuse types. The main selection criteria for a semiconductor fuse is its I²t value…. even more important than its current rating! This is because semiconductor devices are extremely sensitive to current fluctuations and the maximum amount of let-through energy that they are exposed to during an over-current needs to be accurately controlled. This is super-important when selecting fuse protection for semiconductor devices.
If you are replacing an existing fuse, make sure that the new selected fuse has an I²t value that within ±10% of the original fuse’s I²t value. In this case, I²t values need to be compared at the same system voltage.
If you are selecting a semiconductor fuse for a new application, the I²t value of the selected fuse must be lower (or quicker) than the lowest I²t value of any of the components being protected. This ensures that the fuse opens before allowing any damaging let-through current to reach the components. In addition, refer to the question ‘Can I enclose a semiconductor fuse in a fuse holder?’ in this section.
Semiconductor fuses run hotter than most fuses. In order to achieve a very accurate melting temperature, these fuses have been engineered with a high proportion of pure silver in their element and their body filling is high quality silica, which helps to draw heat away from the fuse element. Due to this fact, it is generally accepted that they should not be enclosed so as to ensure sufficient cooling of the fuses so they can operate as specified. Fuse cooling is very challenging if the fuse holder doesn’t allow sufficient airflow around the fuse.
The ‘power loss’ value of a fuse is a measure of the heat emanating from the fuse under full load. It is used to determine how quickly the fuse dissipates its heat. This is also known as the ‘heat loss’, ‘watts loss’ or ‘heat dissipation value’. Power loss is measured in Watts. If any fuse is to be used in a fully enclosed holder, then the power loss rating of the fuse holder used must be greater than that of the fuse to ensure that there is sufficient dissipation of the heat around the fuse. In other words, the fuse holder’s ability to tolerate heat must be higher than the heat the fuse produces. If this is not followed, the fuse holder may warp, melt or explode. Due to the fact that semiconductor fuses run much hotter than type gG or type aM fuses, extra care must be taken when choosing fuse holders for them.
Please don’t! If you do, then in the event of an over-current, you run the risk of experiencing critical damage to the semiconductor devices in the circuit. In plain words, your expensive components will blow before your fuse does.
I called thru at 430pm EST and was put in contact with Sally in Vic! From the moment the call was answered Sally couldn’t do enough to try and help..... then she organised for Sydney to open up at 6am for me to collect the fuses. As a service-based company it was very refreshing to come across someone that went over and above to help us client back into production as quickly as we could!
DIRECTOR - JOHNSON ELECTRICAL SERVICES
Michael, you asked me if I was happy with your service. Let me tell you that Fuseco had quoted and delivered the products via airfreight from Germany before our other suppliers returned our call. Outstanding!
LAWRENCE AND HANSON
I would like to acknowledge the exceptional service provided by one of your employees over the Xmas break. On Christmas day we lost a 22kV underground feed to a very important part of our business and were desperate for some replacement HV fuses. I found your emergency contact details on the web a and immediately called. The person who answered was very helpful and arranged an emergency transport to our site. The next day, we were back up and running! We are a remote operation 1800kms from the nearest city and average service is the norm.
ELECTRICAL MAINTENANCE AT BHP BILLITON
Thanks for ensuring that our order was delivered on time. Again, thank you for going the extra 8,000 km!
LOGISTICS OFFICER AT GRIDSENSE
I just wanted to let you know what great service your people gave us over the Christmas break and went to great lengths to make sure that we got the right fuses and that they were delivered on time. Dealing with your company a pleasure. Keep up the good work.
I don’t normally do this but I feel compelled to thank you in writing. I have been in the electrical industry for 25 years and without a doubt the most competent and trustworthy supplier I have used over this period of time is Fuseco. This is a demanding industry and how your team keeps performing above expectations is exceptional to me.
EXPORT DEPT AT REXEL
I have dealt with Fuseco for the last 6 years for all our fuse requirements and find they provide the highest quality service and on-going support to our business for our day to day operations and for emergency/ heatwave as they arise. During a heatwave event in January 2014, SA Power Networks had critical fuse demands. Fuseco were extremely responsive in expediting stock requirements and organising special air freights to meet our urgent demands. Their customer service is excellent and key KPI’s measured against the contract are always above target.
INVENTORY ANALYST AT SA POWER NETWORKS
Any company that can pull a rabbit out of a hat like that definitely has my attention!
PROJECT ENGINEER AT RIO TINTO
Our experts are all pre-eminent leaders in electrical products who provide excellent support in their areas of expertise.Technical support
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