Category Archives: Schurter News

Schurter RTS Thermal Fuse – Improved Protection of Power Semiconductors

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RTS Tripping Temperature > 175°C

Improved Protection of Power Semiconductors
• Protects power semiconductors from thermal runaway
• SMD reflow solderable up to 260 °C
• Tested for usage up to 60 V
• Integrated current measuring sensor (shunt)

Schurter RTS thermal fuse, successfully launched in 2018, gets a new variant with a tripping temperature of >175°C. The RTS is a particularly compact overtemperature protection device for power semiconductors in SMD technology for highest demands.

RTS stands for Reflowable Thermal Switch. It was developed to protect highly integrated power semiconductors from overheating. Prior to mechanical activation, the new thermal fuse can be soldered on conventional reflow soldering machines with profiles up to 260 °C.

Protection Against Thermal Runaway
Thermal runaway refers to the overheating of a power semiconductor due to a self-reinforcing, heat-producing process. One of the reasons is the trend towards increasing power density and miniaturization of electronic circuits. The RTS protects these power semiconductors against thermal runaway. In such an event, the thermal fuse acts as a fail-safe device and reliably interrupts the circuit from as early as 175 °C and thus addresses the operating temperatures of common power semiconductors even better.

Minimal Footprint
The new overtemperature protection device comes in the same minimal dimensions and maximum breaking capacity despite its additional shunt functionality. On its small 6.6 x 8.8 mm footprint the RTS can handle operating currents of up to 130 A and rated voltages of up to 60 VDC.

Integrated Current Measuring Sensor (Shunt)
The shunt version has an integrated resistance with particularly low temperature dependence. This resistance, known as a shunt, enables precise current measurement and enables an additional – non-thermal – circuit protection, e.g. via a controller.

 

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Schurter CHS Capacitive Switch

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CHS Capacitive Switch that can be Installed in a Hidden Way

• Designed for use behind all non-conductive materials where openings in the user interface are not desired
• Provides the designer with a lot of freedom in the design of the user interface
• Highest reliability and service life
• RGB area illumination

Conventional switches inevitably require mounting holes in the user interface. Not so with the new Schurter CHS. CHS stands for “Capacitive Hidden Switch”. They can be mounted hidden behind the surface of non-conductive materials and are therefore invisible. This approach allows completely new possibilities for designing user interfaces that ideally meet the requirements of specific applications.

With capacitive switches, an electric field is built up on the user surface of the sensor. This technology is used to design a switch with the Schurter CHS that no longer requires direct sensor contact with the finger to trigger. The electrical field change required to trigger the switching process is still achieved even if a non-conductive material (glass, plastic, wood, or similar) is inserted between the sensor and the finger.

Use in Highly Sensitive Environments:
The new CHS is simply glued behind a wide variety of non-conductive materials and thus enables the construction of control elements for devices (medical technology, food industry) where hygiene plays a major role. Since there are no holes or slots created by the installation and the switch also has no moving parts, potentially harmful microbes have no possibility to “settle” on the user interface. This means that materials can be chosen that are particularly easy to
clean.

Sensitivity Adjustable:
The SCHURTER CHS is programmed as standard so that it does not trip in the event of field changes caused by liquids or minor wiping contact. This is only done by precise touching of the switching surface. However, adjustments can be made here at the customer’s request. This applies in particular to the thickness of the material behind which the switch is bonded. As standard, the sensitivity is designed for a glass thickness of up to 2 mm.

Designer’s Dream:
Switches are always a challenge for industrial designers. Their installation in the user interface often “disturbs” the appearance and structure of the same. The desire for an invisible switch is therefore great, because with it one no longer has to make compromises and is to a great extent free in the design.

Available in 3 Variants:
The new SCHURTER CHS is available in three different variants.
• CHS 1 comes without illumination and is with a mounting depth of less than 6 mm the optimal solution for space constrained designs.
• CHS 2 provides optical feedback. The RGB lighting can be used as a design element.
• CHS 3 is the potted version with lighting for demanding use in harsh environments.

 

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Schurter FMBD EP 3-Phase Mains Filter

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FMBD EP 3-Phase Mains Filter
• Compact design with minimal footprint
• Double-stage filter with high attenuation
• Variants for high voltage applications
• Wide temperature range

Schurter introduces the FMBD EP double-stage flagship filter family for 3 phases with neutral line systems. Thanks to its particularly compact dimensions and high performance, the new filter series is ideally suited for the tight space conditions in today’s machine and industrial plant construction. Versions with high nominal voltages make a wide field of applications possible.

Space is a scarce commodity in control cabinets for industrial applications in the 3-phase range. Schurter has addressed this problem with another completely new filter design, which is much more compact than previous generations. The new, almost cuboidal design makes optimum use of the space in the housing. Thanks to a double-stage filter and the use of the highest quality components (generously dimensioned film capacitors, chokes with highly permeable cores), the new development shines with exceptional broadband filter attenuation.

Suitable for High EMC Emissions
The double-stage filter family is therefore also appropriate for applications with particularly high EMC emissions, as is frequently encountered in industry. Typical applications include machines and systems for automatic production, motor drives and industrial plant machinery. These powerful filters are also the first choice for modern frequency inverters for motor control.

Mounting
The FMBD EP series features screw terminals for absolutely safe wiring. Thanks to the metal flange, an excellent earth connection is ensured when screwed to the chassis.

Wide Temperature and Voltage Range
The standard types can be used over a wide temperature range from -40 °C to 100 °C. The filters are designed for currents from 16 A to 230 A at an ambient temperature of 50 °C. They have both ENEC and cURus approval for applications up to 520 VAC and ENEC and UR approval for applications up to 760 VAC.

Leakage Current
The standard versions are designed for industrial applications with leakage currents of <9.4 mA. Special variants with leakage currents of <2.5 mA are available for critical applications.

The completely redesigned FMBD EP models are the ideal replacement for all types of SCHURTER FMBD and FMBD NEO filters. They offer at least identical performance with significantly reduced dimensions and weight.

 

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Schurter TTS Contactless Switch

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Contactless Switch for Hygienic Switching
• Designed for applications in public areas where non-contact switching prevents the transmission of pathogens
• Optical technology precisely adjustable

The Covid 19 pandemic has greatly increased the demand for non-contact push buttons and switches. Various studies show that the transmission of viruses and bacteria via surfaces exposed to constant contact with hands is high.

A wide variety of technologies for contactless switching are vying for the favor of developers and buyers. But not everyone is suitable to the same extent. Often, they also send out false signals under certain
conditions (e.g., splash water, rain) and this trigger unintentional switching. The optical technology TOF (Time of Flight) used in the Schurter TTS can be programmed individually, with high precision, so that malfunctions are prevented.

Highest Reliability
The switch is programmed so that the standard detection distance is 60 to 0.02 mm. This ensures that wiping over or cleaning the switch surface will not trigger a switching signal. Schurter TTS switches offer the highest reliability. Since they have no moving parts, their lifetime is more than 20 million switching cycles.

Ring Illumination and Installation
The visual feedback is ensured by a two-color ring illumination (red/green) in the actuator, whose supply voltage is between 5 and 28 VDC. The simple installation of the TTS, which is fixed by means of a nut, and an anti-twist protection allow a maximum easy replacement.

Areas of Application
The new TTS non-contact switch can be used for a wide range of applications. It is suitable in public areas, for example for vending machines, parking systems or in sanitary areas to avoid any contact by hand. However, the detection distance can also be set so that the switch can be used as a photoelectric barrier for certain applications, this opening up a new field of application.

 

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Schurter DKIV-1 Choke For Printed Circuit Board Mounting

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1-Phase High Current Choke in Vertical Design
• Small footprint on the printed circuit board
• Open design optimizes heat dissipation
• Compact and lightweight
• Nanocrystalline or ferrite ring cores

Schurter expands its range of current-compensated chokes for printed circuit board mounting, to include a series for 1-phase high-current applications. Due to the vertical design, the new DKIV-1 series sports a significantly smaller footprint. The chokes are available with a ferrite or nanocrystalline core for rated currents from 10 A to 50 A. The open design makes the chokes particularly compact and lightweight.

Like all other aspects of electronic design, the power circuit is oftentimes built today using discrete components on printed circuit boards. With the trend toward integrating components, to achieve smaller and smaller form factors, thermal problems and high current on the PCB can become a challenge. Traditional block filters might well address these challenges, but their larger package size also presents challenges due to the mentioned space constraints; therefore, an effective asymmetrical common mode choke, together with capacitors mounted on the PCB, is a better solution

Compact and Lightweight
The new DKIV-1 series is designed for 1-phase applications at rated currents from 10 A to 50 A. Even at the max. rating, the vertical choke requires only a small footprint on the PCB, thus allowing a compact design with high performance. The compact and lightweight current-compensated chokes are throughhole mounted. They are ideal for multistage filter applications, where the combination of a vertical choke (DKIV) with a horizontal choke (DKIH) reduces the mutual interference of the magnetic fields of the individual chokes.

Performance and Approvals
The DKIV-1 current compensated chokes comply with IEC 60938 and with a rated voltage of 300 VAC or 450 VDC, they are suitable for almost any application. The DKIV-1 series is certified for current ratings from 10 to 50 A, 300 VAC according to IEC and UL and 10 to 50 A, 250 VAC according to CSA. The chokes have ENEC and cURus approvals. The DKIV-1 series has been designed for a wide temperature range of -40 °C to +100 °C.

 

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Schurter UMT-H Fuse Family: Extension 40A and 50A

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SMD Ceramic Fuse with Very High Breaking Capacity
• 26 rated currents from 0.16 to 50 A
• International approvals
• Time-Lag T characteristic
• Impermeable to potting compound

The well introduced SMD ceramic fuses of the UMT-H family have been expanded in the form of a 40 A and a 50 A version. Schurter now offers the UMT-H with its Time-Lag T characteristic in a total of 26 rated currents between 160 mA and 50 A.

The UMT-H SMD ceramic fuse now covers a current range from 160 mA to 50 A at voltages of up to 277 VAC and 250 VDC. This makes the cuboid fuse ideal for cost-efficient automated assembly. Its large solder pads ensure excellent heat dissipation.

Applications
The UMT-H was specially developed for primary protection in industrial electronics at nominal voltages of up to 277 VAC. Additional areas of application are energy supply, medical technology and telecommunications as well as e-mobility. New market developments show that currents of 40 A and 50 A are increasingly needed for battery-powered applications.

High Inrush Currents
The UMT-H is predestined for use in applications with high inrush currents (e.g. motors) due to its Time-Lag T characteristic. But also newer applications, which increasingly rely on powerful accumulators, often require slow tripping.

Impermeable to Potting Compound
The UMT-H remains tight with most commercially available potting compounds. Therefore, this fuse is especially suitable for high demands. In addition, the high breaking capacity of 1500 A and the cap distance of >10 mm make the UMT-H the ideal choice for explosion protection.

 

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Schurter TA36 Thermal Circuit Breaker

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Thermal Circuit Breaker with Modern Design and Refreshing Colors
• New design with a variety of color combinations
• Unique UL rating of 277 VAC
• Finely graded rated currents

Improving a good product – this was the principle behind the development of the Schurter TA36 thermal circuit breaker. Based on the TA35, which has been successfully proven for many years, a refreshing product with a contemporary look was developed.

No longer only functionality and quality matter. Today, a good product must also withstand the critical gaze of a clientele who is accustomed to design.

Refreshing Design
A switch is operated with fingers – sensible sensors. Surfaces and materials are providing a direct feedback, to indicate and feel the quality of a product. Gently curved lines and the best materials combined in the TA36 result in an appealing feeling. Both the flange (3 colours) and the actuator (7 colours) are available in a variety of trendy colours and colour combinations with 5 different types of markings.

Proven Technology
Technically, the TA36 series offers proven technology over years: it is a particularly versatile series of miniature circuit breakers with an especially high UL rating of 277 VAC. It is available as a 1- or 2-pole version and impresses with its compact dimensions.

Wide Range of Applications
The new TA36 offers both the function of an appliance switch and thermal overcurrent protection. Finely graded rated currents from 0.05 A to 20 A are available for 1- and 2-pole circuit breakers. The TA36 switches are designed for efficient snap-in mounting and are equipped with plug-in connections (Quick Connect).

There are almost no limits for the TA36 to find its purpose in various applications: from industrial and medical technology to consumer goods, a TA36 fits almost everywhere.

The TA36 Circuit Breaker is Characterised by Following Key Data:
• Nominal voltage up to 277 VAC and 60 VDC
• Nominal currents with fine gradings from 0.05 A to 20 A
• Rocker-type actuation
• 1-pole or 2-pole versions with quick connect terminals
• Operational temperature from -30 °C to +60 °C
• Degree of protection IP40 (front side)
• UL and VDE approvals (*CCC pending)
• «Retrofit» compatibility given with TA35 circuit breakers

 

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Schurter FMBC EP 3-Phase Mains Filter

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FMBC EP 3-Phase Mains Filter
• Compact design with minimal footprint
• Double-stage filter with high attenuation
• Variants for high voltage applications
• Wide temperature range

Schurter introduces the FMBC EP double-stage filter family for 3 phase systems. Thanks to its particularly compact dimensions and high performance, the new filter series is ideally suited for the tight space conditions in today’s machine and industrial plant construction. Due to versions with high nominal voltages, a particularly wide field of applications is possible.

Space is scarce in control cabinets for industrial applications in the 3-phase range. Schhurter has addressed this problem with another complete filter redesign, which is much more compact than previous generations. The new, almost cuboidal design makes optimum use of the space in the housing. Thanks to a double-stage filter and the use of the highest quality components (generously dimensioned film capacitors, chokes with highly permeable cores), the new development shines with exceptional broadband filter attenuation.

Suitable for High EMC Emissions
The double-stage filter family is therefore also appropriate for applications with particularly high EMC emissions, as is frequently encountered in industry. Typical applications include machines and systems for automatic production, motor drives and industrial plant machinery. These powerful filters are also the first choice for modern frequency inverters for motor control.

Mounting
The FMBC EP series features screw terminals for absolutely safe wiring. Thanks to the metal flange, an excellent earth connection is ensured when screwed to the chassis.

Wide Temperature and Voltage Range
The standard types can be used over a wide temperature range from -40 °C to 100 °C. The filters are designed for currents from 16 A to 230 A at an ambient temperature of 50 °C. They have both ENEC and cURus approval and are recommended for applications up to 520 VAC or even 760 VAC.

Leakage Current
The standard versions are designed for industrial applications with leakage currents <4 mA. Special variants with leakage currents <1 mA are available for leakage current critical applications.

Applications
• Industrial equipment, machines
• Robotics
•Motor drive applications
•Machine tools
• Energy inverters

The completely redesigned FMBC EP models are the ideal replacement for all types of Schurter FMBC and FMBC NEO filters. They offer identical performance with significantly reduced dimensions and weight.

 

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Home Page: http://www.epreston.co.uk/epblog/

Schurter Expands Its Portfolio of Fuseholders with the CFO Fuse Clip Series

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CFO Fuse Clip Series:  As THT Version or with M3 Bore for Screw and Rivet Mounting
• Designed for high rated voltages
• Excellent price-performance ratio
• Low mounting height

The CFO fuse clip series is designed for fuses with 10.3 mm diameter and is available as M3 version for screw and rivet mounting or alternatively for THT.

High performance
The new CFO fuse clip series is suitable for applications with voltages up to 1000 VDC / 600 VAC and currents up to 16 A (UL). The operating range extends from -40 ºC to 125 ºC.

Economical
All variants of the CFO fuse clip series offer an excellent price-performance ratio. The clips are made of brass and are available with nickel or tin plating.

Flexible
Suitable for (almost) every application: Whether a classic THT or screw/rivet mounting is required, with the CFO series you will find your matching fuse clip. Also, thanks to their low mounting height, they can
be installed anywhere.

Applications
Due to its high voltage rating, the CFO fuse clips are suitable for a particularly wide range of applications: These include for example photovoltaic and DC high voltage applications in general. Furthermore, the CFO series is of course also suitable for classical industrial and consumer electronics, battery chargers and power distribution applications.

 

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Schurter RC30 Rear Cover

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New Rear Cover Series for Schurter Power Entry Modules, Appliance Plugs and Sockets

• Silicone rubber for a better fit
• with high flame protection class UL94 V-0
• Temperature resistant up to 150 °C
• Halogen free and RoHS, China RoHS as well as REACH compliant

Schurter has a long tradition in the development of Power Entry Modules (PEM) with and without filters, appliance plugs and appliance sockets. The range of available models is equally wide. PEMs are space-saving, very convenient and extremely versatile. With the new halogen free protective rear covers of the RC320 series SCHURTER now launches another useful accessory.

The benefits of the versatile PEMs, Inlets and Outlets are apparent when you browse through the range of features: IEC appliance in-/outlet, with or without fuse, EMC filter, illuminated or non-illuminated power
switch, appliance circuit breaker, etc. etc. Almost every important device protection function can be accommodated in these compact modules.

Rear Covers RC320, Better Fit, High Flame Protection and Environmentally Friendly
The new RC320 rear protective covers are made of flame-retardant silicone rubber (flame class UL94 V0). This flexible and durable material ensures an excellent fit and is temperature resistant up to 150 °C. It is free of halogens and RoHS, CCC RoHS and REACH compliant.

Rear Protection
PEMs, appliance Inlets and Outlets are open to the rear. The new RC320 Rear Covers protect against unintentional contact with live terminals. In addition, they shelter the PEM against dust and other contaminants, which benefits the service life of the component.

Professional Internal Device Design
There is the approach just simply to use the best of the best. In high-end sectors, not only the exterior but also the internal design must meet high standards. The RC320 rear covers from SCHURTER are a welcome addition for professional internal device designs.

 

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