Category Archives: Fuseholders / Fuses

Schurter SHF Fuse 6.3×32: Rated Current Extension

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Compact protection for 3-phase systems
* High rated voltages of up to 500 VAC / VDC
* High breaking capacity of up to 1500 A
* Also available as pigtail version (from 1A)

Schurter extends the range of rated currents in the compact high-performance fuse SHF 6.3×32 down to 500mA. The SHF 6.3×32 is a ceramic fuse for higher voltages (AC and DC) with fast tripping characteristics. The high dielectric strength and the high breaking capacity of 1500 A opens up new fields of application.

Schurter now offers the SHF 6.3×32 in nineteen rated currents between 500 mA and 32 A. The high breaking capacity of 1500 A at a rated voltage of up to 500 VAC/VDC characterizes the fuse. Besides a multitude of applications in the energy and industrial sector, the SHF 6.3×32 is especially suitable for the protection of 3-phase systems.

The SHF 6.3×32 is available as a fuse link and a pigtail version (from 1 to 8 A). Fuse links are suitable for mounting in clips and fuseholders, which makes it possible to quickly replace the fuse. SCHURTER therefore offers an extensive range of clips and fuseholders. The pigtail version allows direct mounting on printed circuit boards using THT soldering technology.

The SHF 6.3×32 can be used as RoHS-compliant fuse for lead-free systems. The compatibility with competitor products allows SCHURTER to offer the SHF 6.3×32 as a replacement product. The fuse is approved by cURus.

 

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Schurter Type SUT-H 6.3×32 mm Ceramic Fuse for High Inrush Currents

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* Very high melting integral (I2t)
* Variants up to 50 A (Pigtail)
* Clip and Pigtail versions
* Excellent price-performance ratio

With the SUT-H, Schurter introduces a new 6.3×32 mm ceramic fuse for single-phase applications for high rated currents from 10 A to 50 A. Thanks to a particularly high melting integral, it is particularly suitable for applications where high inrush currents occur.

The new Schurter SUT-H is technically based on the proven SUT. In contrast to the known fuse, the SUT-H has a much higher melting integral, which makes it particularly pulse resistant. High inrush currents, which occur in power supply units, are easily absorbable.

The fuse is offered for direct mounting on the PCB with pigtails or with a solid beryllium-copper clip (Schurter CQP), which allows an easy replacement of the fuse without soldering. The clip can be up to a rated current of 10 A.

The new 6.3×32 mm SUT-H ceramic fuse opens up completely new areas of application by extending the rated current range up to 50 A and opens completely new areas for innovative applications.

The fuse meets the requirements of the UL 248-14 standard, is cURus approved and RoHS compliant. The SUT-H is developed and manufactured by Chi Lick SCHURTER in China.

 

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Schurter MGA-A 1206 SMD Fuse with 125 VDC

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* No tin whiskers, no tin dendrites
* Lead-free coating (RoHS conform)
* Similar fuse qualification as in MIL-PRF 23419
* Hermetically sealed and robust construction

Schurter extends its successful MGA / MGA-S line of 1206 dimension SMD ceramic fuses with an aviation version that is tin whisker free and completely dispenses with leaded coating.

Crystalline tin dendrites and tin whiskers pose a considerable risk of short circuits in highly dense electronics. Dendrites form during the electro-deposition process, whereby heavy marks could appear on the fuse end caps or housing. A thorough inspection and cleaning is required according to MIL-PRF 23419. Tin whiskers form after the electro-deposition process. The cause is not well understood, although adding lead to otherwise pure tin soldering is commonly used as a preventable measure.

However, lead has become an unwanted element according to many environmental initiatives, e.g. RoHS directives. For this reason, Schurter has extended the successful SMD thin-film fuse family MGA with the new –A variant. In addition to the classic MGA and the ESA-certified MGA-S space fuse, the aviation version, MGA-A, uses gold alternatively to lead. Gold plated end caps provide a surface where neither whiskers nor dendrites can form. This makes the new MGA-A a safe solution for use in not only highly sensitive electronics in the aviation industry but often suffices for use in the industrial grade space sector.

The technical design is similar to that of the ESA-certified MGA-S. This means: hermetically sealed, ultra-robust construction, which is ideally suited for use in intrinsically safe applications according to ATEX and IECEx requirements. Despite its very small footprint (1206), the MGA-A has a particularly high breaking capacity of up to 300 A at 125 VDC and can be used in a wide temperature range of -55 °C to +125 °C.

The new MGA-A from Schurter is suitable for all applications where the highest demands are placed on reliability and availability.

 

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Hylec Type DFH14N / DFH14HBN High-Quality, Flame Retardant Rectangular Semi-Enclosed PCB Fuse Holders

Insulated and finger proof, flame retardant to UL94 V0; CE, cURus, and VDE approved

New rectangular semi-enclosed PCB fuse holders are now available from Hylec-APL, the specialist supplier of electrical components and enclosures. Manufactured from flame-retardant UL94 V0 Polyamide in accordance with IEC 127-6, these fuse holders are a high quality, competitively priced product which comply with multiple approval standards, including the latest EN Glow Wire Test standards at 850degC. The fuse carriers and retainers are finger proof to avoid damage to the fuse during placement on the PCB. Enclosed contacts are a further feature of the new rectangular fuse holders, again safeguarding them from damage during assembly.

Designed for PCB mounting on a 22.6mm pin pitch, with a PCB hole size of 1.5mm, the DFH14N fuse holder (including spigot) and the DFH14HBN fuse carrier are rated to 6.3A/250V. Contact material is tinned nickel plated brass and contact resistance is <5mΩ. Power dissipation is 2.5W and dielectric strength 3KV/60°. Insulation resistance of the DFH14N fuse holder (including spigot) and the DFH14HBN fuse carrier is 100mΩ.

The rectangular fuse carrier and retainers are available in black and green. Hylec also manufactures a very wide range of PCB terminal blocks in various colours, including black, green and orange.

 

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Bulgin Offers Application-Focused Approach to Connectivity and Switching

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Bulgin is helping its customers to select the right connectors and switches for their applications with the launch of an Industry Applications brochure. Covering the entire Bulgin portfolio – including its broad range of Arcolectric switches – this newly created brochure provides a brief overview of the product lines best suited to each application.

The brochure is divided into industry-specific sections – industrial, marine, transport and infrastructure, automotive, medical, oil and gas, data and telecoms, agriculture, renewable energy, recreation and leisure, and appliances – demonstrating the diverse range of settings where you might find Bulgin products. A simple visual guide and ‘at a glance’ descriptions highlight the key features and available options for each product, making it quick and easy to find what you need. From circular power and data connectors to fuse holders and switches – as well as specialist fittings, such as ROV tether connectors and ATEX rated products – you can rely on Bulgin’s environmental protection expertise and many years of industry experience to provide the right solution for your application.

To download a copy of the brochure,
click here —–>   Applications Brochure

 

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Schurter Fuse SHT 6.3×32 and SHT 6.3×32 Pigtail

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Schurter offers a robust, compact and cost-effective cartridge and pigtail fuse SHT 6.3×32 for high voltages and currents. The high breaking capacity up to 3500 A at a nominal voltage of 250 VAC opens the fields for applications for commercial electric cooking appliances in accordance with UL 197.

Schurter offers the SHT 6.3×32 in ten rated currents between 1 and 8 A. The high breaking capacity makes the fuse outstanding. In addition to a wide range of industrial applications the SHT 6.3×32 is particularly suitable for a large number of applications in electrical cooking appliances according to UL 197 standard for protection of 1- to 3-phase systems.

Schurter offers the SHT 6.3×32 as a fuse link and a pigtail version. Fuse links are suitable for mounting in clips and fuse holders, which makes it possible to quickly replace the fuse without soldering. SCHURTER offers the suitable clips (CQP, OG-Clip, OGD) and fuse holders (FEU FUS, FEC, FUL, FUA and FUP) for this purpose.

The most important competitor products are bigger in size (e.g. 10.3×38) and therefore more cost-intensive. That allows Schurter to offer the SHT 6.3×32 and SHT 6.3×32 Pigtail as a replacement product which will reduce size, weight and cost.

Technical Specifications
– High rated voltage of up to 500 VAC
– High breaking capacity of 3500 A @ 250 VAC / 1500 A @ 500 VAC
– Rated current range from 1 to 8 A
– Time lag characteristic T
– Ceramic housing

Application Areas
– Commercial electric cooking appliances according to UL 197
– Photovoltaics
– Frequency converters
– Power electronics
– 3-phase applications

 

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Schurter Is Ready! . . . for the New Requirements of IEC/EN 60127-6 Edition 2 Increased Glow Wire Resistance

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The new fuse holder standard IEC/EN 60127-6 Edition 2, requiring increased glow wire resistance, will come into effect the beginning of October 2017. Schurter is ready!

Glow Wire

With the updated fuse holder standard IEC / EN 60127-6 Edition 2, more attention is given to the area of fire protection. New requirements focus on the materials being used, which must be glow wire tested according to IEC / EN 60695-2-12 and -13 (GWIT=775°C and GWFI=850°C).

These new requirements are contained in the standard for household appliances IEC/EN 60335-1, which has been a long time established standard, particularly due to the prevalence of such unattended appliances (e.g., coffee machines).

All manufacturers of fuse holders must therefore check the glow wire resistance of the materials being used and, if necessary, replace the material. It is also necessary to update the approvals and to carry out a re-examination by the certification body. In case of a material change, the tests according to UL 4248.1 must also be repeated.

All fuse holders certified Until October 08 2017, SCHURTER will have adapted the complete range of its IEC-certified fuse holders to the new standard, including power entry modules with fuse holders. This will poise SCHURTER as the first manufacturer of fuse holders ready to meet the stringent standard.

All Schurter IEC-certified fuse holders marketed as of October 08 2017 will comply with IEC/EN 60127-6 Edition 2, as well as UL 4248.1, and can therefore be safely installed in all household appliances.

Customer-friendly Schurter has placed great attention on the fact that the same part numbers will be used. This makes it unnecessary for the user to make changes to a parts lists, or be deal with new approvals.

General Rules from VDE
–  The manufacturer will lose VDE approval after October 08 2017 for any parts that do not conform with the new requirements for IEC / EN 60127-6 Edition 2 and therefore must no longer sell those products.

–  All parts the manufacturer already sold to market (i.e. to end-customers, distributors or resellers) before October 08 2017 maintain valid VDE approval.

–  All mixed inventory at end-customers, distributors or resellers can continue to be used or shipped or resold without any limitation.

 

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Schurter USN 1206 Temperature Sensitive SMD Fuse

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* Customer-specific time-current tripping characteristic as a function of ambient temperature
* Combination of protection against overcurrent and excessive ambient temperature
* On request qualified according to AEC-Q200

USN 1206

Schurter’s USN 1206 offers a temperature-sensitive SMD fuse suitable for both overcurrent protection and protection against excessive ambient temperatures.

Due to the ever-increasing packing density in power electronics, it is becoming ever challenging to deal with the resulting tighter and hotter board real-estate. Automobile manufacturers increasingly use control units in their products, including power electronics (e.g. ABS modules, annealing time control units and actuators). The trend is to integrate as many functions as possible into the smallest possible space in a single module. The fact that such modules must be protected against overcurrent is self-evident. However, the increasing power density also entails thermal requirements. For this purpose, new approaches are needed to avoid a creeping risk of overheating.

Combination: Current and Temperature

The USN 1206 from SCHURTER is not a pure thermal fuse. It requires a current flow to blow, thus providing protection against overcurrent just as well as any conventional fuse. In addition, it is also designed to protect power semiconductors in automotive applications against over temperature. The fuse has a current-time characteristic which shifts as a function of the ambient temperature. As a result, a specific trigger at a certain threshold value can be achieved increasing temperature.
The USN 1206 from SCHURTER has high I2t values at 32 VDC and a slow blowing characteristic.

Reflow Solderable
The USN 1206 temperature-sensitive SMD fuse is reflowable at 245°C according to IEC 60068-2-58. The epoxy glass housing makes it tight against the potting compound. Thus, the fuse is also suitable for explosion-proof applications according to ATEX / IECEx.

Application Areas
The production and qualification of the fuse is carried out in agreement with the customer according to the requirement profile of the desired time-current trip characteristic as a function of the ambient temperature. The new Schurter USN 1206 is particularly suitable for automotive applications requiring the highest reliability under particularly difficult conditions (heat, vibration, mechanical and cyclic strength). In addition, it is also used wherever temperature-critical processes occur, or even when a specific intrinsic characteristic is required.

Technical Data / Approvals
– Certification and Qualification on Request (AEC-Q200, UL, IEC, MIL)
– Combination of protection against overcurrent and excessive ambient temperature
– Customer-specific time-current tripping characteristic / temperature
– High I2t values
– Rated current: 12 A (USN 1206 12 A , customer-specific)
– Rated voltage: 32 VDC
– Slow blowing characteristic

Applications
– In all electronics with temperature-critical components (eg Mosfet’s)
– Automotive
– Intrinsically safe

 

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Schurter HCF Series, SMD Solid-State Fuse for the Most Demanding Applications

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HCF Series

Schurters’s new High Current Fuse, HCF, is an extremely robust SMD fuse, designed using solid-state / thin-film technology. The HCF is especially suited for use in particularly harsh applications, where the reliable interrupt of high currents is critical.

Schurters’s experience, acquired from the development of solid-state fuses for the space industry, and the cooperation with ESA, have led to the development of the HCF. The new HCF has a similar structure as the two ESA-certified types Schurter MGA-S and HCSF. Fuses used in Space applications meet the most rigorous performance requirements, with only the most advanced, most reliable technologies available. However, the intensive screening of each individual fuse, which is essential requirement for space applications, is not necessary with the HCF for non-Space applications. This leads to a substantial reduction in the cost per fuse.

Solid State / Thin Film Technology
In contrast to conventional fuses with a melting wire, the HCF has a metallic thin film layer. With this manufacturing technique, a metal layer is applied in conjunction with a so-called sputter. The two form on a glass substrate in an exact micrometer thickness. The resulting fuse element is enclosed with a ceramic housing, that guarantees the necessary stability and interrupt capacity. No harmful substances escape in solid or gaseous form during cutoff of the fuse. This technology also makes the SCHURTER HCF completely impermeable to potting compound, which can be used to achieve a hermetic seal e.g. for use in intrinsically safe applications according to ATEX and IECEx requirements.

High Breaking Capacity
The Schurter HCF has a high breaking capacity of up to 1000 A at 125 VAC resp. 125 VDC with fast response. It covers a rated current range from 5 A to 15 A.

Application Areas
Due to its robust design, the HCF fuse is particularly suited for applications which offer high reliability under particularly difficult conditions (thermal and mechanical shock, cycle endurance, etc.). Examples of possible applications: ATEX- and offshore oil and gas applications, equipment operated in sub-arctic regions, aviation electronics, and certain medical technology, where robust and space saving fuse performance is required. The temperature from -50 °C to 125 °C, as well as a vibration resistance – tested up to 1600g – make the HCF ideal for the most demanding high-performance applications under the most adverse conditions.

 

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Schurter New FUS Fuseholder, Snap-In IP67 Dust & Water-Proof, 5 x 20 mm or 6.3 x 32 mm

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With the new FUS fuseholder, Schurter is building on its successful FUL series for high-performance applications and presents the first dust and water-proof fuseholder with ingress degree of protection IP67 especially for rough applications.  The snap-in fuseholder series guarantees fast and tool-free assembly.   The carrier is available in both versions with slot and fingergrip and can accommodate fuse sizes 5 x 20 mm or 6.3 x 32 mm.

Thanks to the high IP67 degree of dust and water protection, the FUS series fuseholders can be used wherever high-performance applications are exposed to potentially adverse environmental influences, such as outdoor applications or in the oil and chemical industry, marine, laboratories and mining. In addition, the FUS series fuseholders are also used where the highest ingress protection against liquid and particles is required, as for instance in medical and food production equipment.

Made of halogen-free plastic, the side metal snap brackets act as heat dissipaters and are designed for fast snap-in mounting. Wires are terminated with quick-connect or solder connections. The newly styled fuse carriers accept 5 x 20 mm or 6.3 x 32 mm fuses, and provide slot or fingergrip removal for fuse replacement.

The FUS series already complies with the increased glow-wire material requirements outlined in the new IEC 60127-6 and IEC 60335-1 standards developed for unattended devices in use.  The FUS fuseholders are characterized by a particularly high-quality design and a good price / performance ratio.

Technical Data
• Fuse holder according to IEC 60127-6 / UL 4248-1
• Rated specifications: IEC 16A @ 500 VAC (4 watt) / UL 32A @ 600 VAC / VDC
• Quick-connect connections 6.3 x 0.8 mm or solder connections
• Ambient temperature: -40 ° C to + 85 ° C
• Complies with the requirements of IEC 60335-1 for unattended devices in operation. This includes the stringent glow wire requirements according to IEC 60695-2-12 and -13

Applications
Equipment exposed to harsh industrial environments or the outdoors, measurement, laboratory and medical equipment, marine, dairy and food industries, robotics, controls in mining and underground.

 

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