Compact, High Performance Fuse is Optimal for Intrinsically Safe Applications

Schurter's Universal Modular fuse, UMT-H, offers a 1500 A breaking capacity at rated voltages of 277 VAC / 250 VDC. The compact, high performance fuse now has VDE approval in addition to UL approval. This time-lag fuse provides overcurrent and short circuit protection in various industrial control applications, including intrinsically safe applications.

The "intrinsic safety" method is one of the most common techniques used for achieving safety protection with lower voltage or power equipment. This method restricts the available electrical and thermal energy in a system so that ignition of a hazardous atmosphere (such as explosive gas, dust, or electrical arcing) cannot occur. The UMT-H's high breaking capacity of 1500 A, plus the >10 mm spacing between end caps, combined with the ability to be impermeable to conformal coating makes the fuse suitable for use in such intrinsically safe applications.

The UMT-H fuse is available in a total of 19 rated currents between 160 mA and 10 A at voltages up to 277 VAC and 250 VDC. The UMT-H measures at 5.3 x 16 mm, which is a smaller alternative to the classic cylindrically-shaped cartridge fuses (e.g. 5 x 20 mm). The smaller footprint saves valuable board space, allowing for further downsizing of equipment. With its square design, the UMT-H is also suited for more cost-effective, automated assembly. The high breaking capacity fuse meets the IEC 60127-7/1, UL 248-14 and CSA C22.2 standards along with its VDE and UL approvals. Additional applications include power supplies, electromobility, medical and telecommunication applications as well as 277 VAC utility-connected equipment.

Features/benefits:

- Certification according to IEC 60127-7/1, UL 248-14, CSA C22.2 no. 248.14
- High breaking capacity (H) of 1500 A at rated voltage
- High rated voltages up to 277 VAC / 250 VDC
- 19 rated currents from 160 mA to 10 A
- Time-lag (T) characteristics
- Optimal suited for automated assembling because of square design
- Suitable for intrinsically safe applications

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Schurter is expanding its range of block filters for single-phase systems with its new FMAB NEO series. This range of single-phase filters combines a compact design with a high level of performance. The use of large X capacitors permits high symmetrical attenuation.

The new FMAB NEO filter series boasts a compact design combined with high performance. All versions come with large X capacitors, which ensure high symmetrical attenuation in the lower frequency range. Symmetrical interferences can occur because of phase-angle controllers or semi-conductor relays, for example. When the power semiconductors switch, they generate interference currents between the phase conductor and the neutral conductor. These are known as symmetrical interferences, which the X capacitors positioned between these conductors can help reduce effectively.

The filters in the new series have a shiny steel housing with a closed filter base. The filter is thus effectively and completely shielded, no matter how it is mounted. The filter series is particularly suitable for equipment with high symmetrical interferences, such as devices with semiconductors that control high-power equipment such as professional coffee machines, devices with water heaters, and all types of industry electronics. The compact filters are also suitable for medical equipment and household appliances.

The filter series is available with plug-in connections or thread bolts (30 A version). A version with wire connection is also available. They have a metal flange for easy screw-on mounting on the housing.

The series of devices is designed for current levels from 1 A to 30 A at 250 VAC according to IEC and UL standards. It has ENEC and cURus approvals and is suited for applications according to IEC 60950. Versions are available with small leakage currents <80 μA (M80) or without leakage current <5 μA (M5) for medical equipment according to IEC/UL 60601-1.

Technical Data:
- 250 VAC single-phase block filter
- Single-stage filter with large X-capacitors
- Excellent symmetrical attenuation
- Filter available ins standard or medical M5 / M80 version
- Rated currents: 1, 3, 4, 6, 8, 10, 12, 16, 20, 30A (ENEC / UL / CSA) at 40°C
- Chassis: Screw-on mounting, from top
- Quick connect terminals 1 – 20A, nut and bolt 30A, optional wire leads

Application:
- For applications with high symmetrical interferences
- Industrial applications
- Household appliances
- Datacom equipment
- Medical equipment

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Schurter's popular power entry module, KFA series, is now equipped with an additional ground line choke to suppress high frequency interference arising from ground loops on the ground line. In addition, the newly added ground line choke improves asymmetric attenuation in higher frequencies in medical filter versions. The KFA series with existing common-mode choke on the phase and neutral conductors, together with an additional ground line choke, is well enhanced to address the growing EMC challenges facing compliance engineers today.

Ground loops arise through different impedances of different ground line connections in one or multiple pieces of equipment. While all ground connections have the same potential level for the 50 Hz load current, these can have different potential levels for high-frequency interference. The ground line choke,  which is wired between the power-inlet connector and the filter output, smartly addresses this phenomenon. Because of its placement directly at the power line input, high-frequency interference currents on the ground line are prevented from bypassing the filter through the equipment housing. The ground line choke isolates the equipment chassis against high frequencies and the equipment ground from the ground on the line power connection. This approach effectively breaks any possible ground loops.

Audio equipment for instance is known for being prone to ground loop problems. Often referred to as hum or buzz, the KFA, with ground line choke, is well suited for suppressing interferences that lead to diminished sound quality. The KFA is also well suited for medical equipment required to use low leakage
filters for increased patient safety. The reduced Y capacitance to ground, or absence thereof, leads to reduced asymmetric attenuation in higher frequencies. The KFA with ground line choke helps to compensate for this reduced performance.

The KFA power entry module includes an IEC C14 power inlet connector with a 1- or 2-pole fuseholder and EMC filter and is available in a wide range of models and designs. The series offers current levels from 1A to 10A at 250 VAC according to IEC and UL standards. The series has ENEC and cURus approvals and is suited for applications according to IEC 60950. Special filter versions, M5 and M80, are available for medical devices according to IEC 60601-1. Wiring is done using quick-connect terminals or wire leads. The KFA is compatible with V-Lock cord sets, designed to safeguard against unintentional disconnection of the power.

Technical Data / Approvals / Prices
- IEC C14 power-inlet connector with 1/2-pole fuseholder and a filter
- Filter standard, medical M5 / M80 versions
- Rated currents: 1, 2, 4, 6, 10A (ENEC / UL / CSA) at 40°C
- Screw or snap-in assembly
- V-Lock plug-retention safeguard

Application
- For applications with noise on the ground wire
- For applications with ground loops
- Applications with high asymmetrical attenuation requirements
- Suited for medical equipment according to IEC 60601-1

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Schurter expands its wide range of power entry modules to include versions, without ground pin, for use in Protection Class II double-insulated applications. The DC12 power entry module is already popular for use in Protection Class I equipment, due to its high performance switch and EMC filter functions integrated into one compact package. The new Protection Class II version is perfectly suited for medical equipment used at home where the medical standard prescribes the use of Protection Class II design.

The new DC12 Class II version is according to IEC 60320-1, style C18. It is particularly well suited for use in medical equipment according to the IEC standard 60601-1-11, which outlines additional safety measures specific to medical equipment intended for use in the home. There is increasing demand for
such equipment as populations around the world age and healthcare costs continue to rise.

Protection Class II equipment, in contrast to Protection Class I equipment, generally has no metal case. This category of equipment is called double insulated, and requires higher safety levels for energized components relative to exposed surfaces. The DC12 Class II power entry module provides double
insulation between energized components and exposed parts. This reinforced insulation is tested with a voltage of 4000 VDC between the energized conductor (L) and the neutral conductor (N) relative to the filter case.

The DC12 line switch is available in 1- or 2-pole and touts high inrush current withstand capability. The EMC filter is available in medical and low leakage, M5, versions. This integrated filter at the power input provides highly effective interference suppression, which results in optimized electromagnetic
compatibility. Current ratings range from 1-10 A at 250 VAC. Versions with quick-connect or solder terminals are available. The DC12 is available in black or white. Mating V-Lock cord sets are available to safeguard against unintentional disconnection of the power. The DC12 Class I and Class II are ENEC and cURus approved. They are suited for use in equipment according to IEC 60950, IEC 60601-1, in addition to IEC 60601-1-11.

Technical Data / Approvals / Prices
- IEC C18 power-inlet connector with 2-pole switch and a filter
- M5 medical filter
- Rated currents: 1, 2, 4, 6, 10A (ENEC / UL / CSA) at 40°C
- Screw or snap-in assembly
- Optional V-Lock plug-retention safeguard
- Version in white available

Application
- For totally insulated equipment according to IEC 61140
- Suited for medical equipment according to IEC 60601-1
- Especially well suited for medical equipment intended for use in the home according to IEC 60601-1-11

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1658 - 1659 - 1681
Schurter IEC Cord Connectors C21 and Appliance Inlet C22
For Very Hot Conditions 155°C
IEC 16 A / UL/CSA 20 A

Schurter introduces its high temperature inlet and cord connectors series to extend its range of IEC high-temperature power inlets and outlets according to IEC. The high-temperature appliance inlets and cord connectors are designed according to IEC for 16 A at 250 VAC, and according to UL / CSA for 20 A at 250 VAC.

Pin temperature may reach a maximum of 155°C. Furthermore, the appliance inlets and cord connectors meet the requirements of IEC 60335-1 for household appliances, which covers enhanced requirements of glow wire tests for unattended household appliances according to IEC 60695-2-12 and -13. They have certifications from ENEC, UL/ CSA and CCC.

The high-temperature appliance inlet, series 1681, offers types for snap-in or screw-on mounting. The inlet can be specified with terminals for solder, quick-connect or screw connections. The cord connector comes in a straight, series 1658, and an angled, series 1659, design. Cables with a conductor cross-section of up to 2.5 mm2 or 10 AWG can be used.

The IEC high-temperature appliance inlet and the cord connectors are RoHS and CHINA-RoHS compliant. They are used in equipment that operates in elevated ambient temperatures and/or with high currents, such as datacom equipment, where increased power and decreased size are trending, as well as portable industrial equipment such as heating systems.

Applications
• Power Supplies
• IT / Telecom equipment
• Server / Data Storage
• Furnaces, Heating Equipment, Ovens
• Lighting systems

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Schurter is expanding its range of surface mount fuses with the introduction of the UMK 250 series. The quick-acting characteristic of this fuse is in accordance with IEC 60127-4, providing the logical addition to the existing UMZ 250 time-lag series. The UMK 250 provides primary and secondary overcurrent and short-circuit protection.

Schurter offers the UMK 250 in ten rated currents from 500 mA to 4 A. The fuse and clip combination is designed for easy fuse replacement. Rated for the protection of primary and secondary PCB circuits, the UMK 250 is designed for applications including power supplies, medical equipment, lighting and devices for home and industrial use.

This series is RoHS compliant and compatible with lead-free soldering processes. The UMK 250 fuseholder is an ideal substitute for similar SMD fuses, where the fuse clips are not offered. The compatability of the solder pads allows the SCHURTER product to be used in cases where the ability to replace the fuse is desired. The installed fuse-link UMF 250 is considered an Universal Modular Fuse (UMF) and carries VDE and cURus approvals. This ultra-small fuse
including clip is 11.3 x 4.2 x 4.0 mm with a breaking capacity between 100 – 200 A at 250 VAC /
125 VDC.

Technical features:
- Rated Current range: 500 mA to 4 A
- Rated voltage: 250 VAC and 125 VDC, according to IEC
- Breaking capacity: 100 – 200 A @ 250 VAC / 125 VDC
- Characterisitc: Quick-Acting F, according to IEC 60127-4
- Component size including Clip: 11.3 x 4.2 x 4.0 mm

Applications:
- Primary and secondary overcurrent protection
- Lighting
- Medical appliances
- Industrial electronics

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Schurter is pleased to announce, that its compact KFA and DA22 Series power entry modules, with 1- or 2-pole fuseholder and filters, now mates with V-Lock cord sets. The KFA’s and DA22’s new V-Lock compatible feature prevents unintended disconnection of the power from the equipment.

Unlike wire bail or clamp accessories, no additional costly hardware is necessary to install the cord retaining system. The cordset safely latches into a notch in the plastic housing of the KFA and DA22. Removing the cordset is easily achieved by depressing the latch. V-Lock power cords are offered in a wide range of cord lengths and country-specific plugs, including NEMA 5-15 standard hospital grade versions.

The KFA and DA22 are ideal for use in medical devices, IT and audio equipment used on stage, where the power to the equipment must withstand mechanical stress on the cord. It features C14 inlet, 1- or 2-pole fuseholder for 5x20mm fuses, mains filter, 4.8 x 0.8mm quick-connect or PCB terminals, and screw-on or snap-in mounting. Optional voltage selector allows for use in international markets. Current rating 1 to 10 A at 250 VAC.

Approvals include UL, CSA, VDE and CCC.

Features and benefits:
- Power entry module with 3 functions: Appliance Inlet, Fuseholder and Line filter
- Suitable for use in medical equipment according to IEC/UL 60601-1
- Optional fuse drawer "extra-safe" according to IEC/UL 60601-1
- V-Lock retaining system for mating cordsets
- No additional components required for cord retentionFeatures and benefits:
- Power entry module with 3 functions: Appliance Inlet, Fuseholder and Line filter
- Suitable for use in medical equipment according to IEC/UL 60601-1
- Optional fuse drawer "extra-safe" according to IEC/UL 60601-1
- V-Lock retaining system for mating cordsets
- No additional components required for cord retention

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The PSE HI (high impact) switches can now be delivered with raised symbols, letters and numbers in addition to various colors, or legend inscriptions. The switch surface is made of anodized aluminium, which can be pre-formed with raised symbols to provide long-term wear and excellent user haptics.

The aluminium surface of the PSE HI switches can be produced in various anodized colors. A variety of standard legends and/or raised symbols are offered to indicate function. The laser etched legends or pre-formed raised symbols provide long-term protection against wear. Raised symbols can be numbers, as well as characters from the Braille alphabet. These flexible design options make it possible to offer a wide variety of standard or custom options to meet individual design requirements.

The PSE HI piezo switches have an ingress protection class rating of IP67. The hermetic seal makes the switches ideal for use in areas that must be regularly cleaned or disinfected. Additionally, the switches offer a robust metal housing, well suited for use in harsh environments where there exists the potential for vandalism. The impact resistance according to DIN EN 50102 is IK06.

The PSE HI piezo switch is rated 0.1A @ 42 VAC/60 VDC. The piezo switching element offers an exceptionally long service life of more than 20 million switching cycles. Typical applications requiring such robust switch performance include pedestrian crossing walks, elevators, truck lifts, material-handling equipment, safety equipment, ticketing terminals, gas stations, food service equipment and processing plants.

Technical Data:
- PSE HI piezo switch 0.1A 42VAC/60VDC
- Standard symbols, custom symbols, laser-etched, raised shapes, various colors
- Service life at rated switching capacity > 20 million switching cycles
- Protection class IK06 (DIN EN 50102), IP67 (DIN 60529)

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Schurter is merging its expertise in the area of robust metal switches with reliable circuit breakers into a unique product: the T12-MSM is the first circuit breaker on the market that is extremely attractive from a visual standpoint. With its extraordinary actuating appeal, the T12-MSM need not be used as just another switch to be hidden on the rear of the equipment; rather it can be stylishly displayed on the front.

Schurter combines its circuit breakers with thermal operation (T12) and thermal-magnetic operation (TM12) with its MSM series metal switches. The T12-MSM, creates a market innovation that marries overcurrent protection with an attractive pushbutton design. The MSM switches are characterized by their visual appeal and operating characteristics. Both the housing and the actuator are fabricated from high-quality stainless steel, and there are a variety of design options including size, color, lighting and inscription.

The T12 and TM12 are reliable circuit breakers with positive trip-free operation. The contacts open even if the reset button is manually held in the closed position. They reliably protect equipment with rated currents from 50 mA to 16 A. The optional magnetic release, protects against increased risk of short circuits.

The combination of the T12 circuit breaker and the MSM switch now unites all these features in product that is also extremely robust. With a vandal-proof design, IP 64 tightness protection and IK 07 impact resistance, the T12-MSM is also suited for outdoor applications and use in harsh environments. Additionally, the look and feel is novel for a circuit breaker and stands out among other circuit breakers as a true designer piece, suitable for mounting on the front side of the equipment, where an appealing design is paramount. The T12-MSM offers unprecedented product-design opportunities for applications where moderate overcurrents can occur. Among its wide range of possible uses are applications requiring electromechanical shielding, outdoor applications, and especially applications with electric motors.

Technical Information / Approvals
- T12-MSM or TM12-MSM circuit breaker with stainless steel actuator
- Rated voltage: 240 VAC / 28 VDC
- Rated current: 50 mA - 16 A (15 A UL)
- Thermal – magnetic or thermal tripping
- Manual On/Off actuation
- Available with auxiliary contact or shunt terminal
- Quick-connect or screw-clamp terminals
- Threaded neck type
- Actuator available in 19 mm and 22 mm diameters
- Optional point or ring illumination
- A variety of labeling options
- Tightness according to IP64
- Vandal-proofed according to IK07

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Schurter expands its successful range of FMBC NEO 3-phase filters with a low leakage current series for applications where no high leakage currents are allowed. The new FMBC LL series of filters is designed for rated currents between 7 and 180 A. It is ideal for leakage current-critical industrial applications such as drive technology.

Today's electrical industrial installations are increasingly being fitted with residual current devices (RCD) to ensure efficient personal protection. This is also a requirement in certain countries for 3-phase systems, for example plug-in systems up to 32 A. The RCD limits the current to earth to a maximum of 30 mA. This poses a particular problem in drive technology since the frequency inverters that control the engine generate considerable leakage current.
Long motor cables further aggravate the problem since they increase the capacity to earth and hence the currents to earth too. The new series of FMBC LL filters helps reduce the leakage currents and permits compliance with common EMC standards as an efficient input filter.

The compact FMBC LL 3-phase filters have been designed for currents from 7 A to 180 A at an ambient temperature of 50 °C. They have UL approvals for ambient temperatures of +50 °C as well as +40 °C at a higher rated current. The FMBC LL is approved for rated voltages of 520 VAC. This means that they can be used in high-power systems, such as machines used in an industrial environment. Despite their high output performance, they are still compact and
lightweight in design.

The standard FMBC LL is fitted with a screw connection. Other types of connections including wires or copper bars are possible on request as well as customised modifications to the circuit or housing. SCHURTER also offers its own EMC measuring service for an optimum adjustment to the inverter. Therefore the most efficient filter solution for the system can be developed.

Technical Features:
- Rated voltage: 520 VAC
- Rated current: 7 A to 180 A
- Leakage current 7 – 55 A: < 5 mA, leakage current 75 – 180 A: < 20 mA
- Screw connections
- cURus approval: E72928

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