Circuit & System Protection


Latest Articles

Block filters for single-phase applications up to 50 A
24 March 2004, Retron, Products & Solutions
Schurter has extended its filtered power entry module range with single-phase block filters. With this extension it supports customer requirements for power supplies from 0,5 up to 50 A at 250 V and provides ...

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Surge voltage protection remote I/O with surge voltage protection
24 March 2004, Phoenix Contact
Many signal transmissions are designed as EEx ia current circuits. The Termitrab TT-EX(I)-24DC protection devices as well as the modular terminal blocks for such areas have blue housings. With powerful ...

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PPTC thermistors for power over Ethernet
24 March 2004
In September 2003, the IEEE published the IEEE 802.3AF standard that defines the specifications to deliver power over standard Ethernet cables. The Power over Ethernet (PoE) standard has facilitated the ...

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High density T1/E1 modules
24 March 2004, ASIC Design Services
HALO's new SIP Tele-Pro series of high density T1/E1 modules have been designed to provide the network engineer a complete UL/EN60950 recognised solution meeting the requirements of GR1089 for lightning ...

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High temperature machine screw insulators protect transistors and discretes
24 March 2004, Vepac Electronics, Products & Solutions
Designed to protect popular transistors and discretes, Bivar offers three different styles of shoulder insulators made from a UL rated 40% glass-filled polyphenylene sulfide (PPS). The insulators provide ...

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Low capacitance thyristor surge protection device
24 March 2004, News & Events
Pan Jit enables faster data transmission speeds by offering a family of thyristor surge protective devices (TSPD) with very low typical capacitance values. Protection is critical to avoid latch-up or ...

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3-phase voltage monitor relay
24 March 2004
Citels' VM230/TRI is designed to continuously control a 3-phase 230/400 V network in order to detect any kind of AC failures that may disturb or destroy sensitive equipment. Some of these are overvoltages, ...

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Reliable and safe - protection components: Part II
24 March 2004, Electrocomp
Protection of electronic equipment against failure is a critical market demand and an obligation to consumers at the same time. Taking years of experience, competence and innovation to always offer reliable ...

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SMD thermistors claimed smallest
24 March 2004, Access Control & Identity Management
Murata claims its Posistors are the smallest in the world at 0603 size. For over-current prevention and overheat sensing, these positive-going thermistors offer a very rapid resistance increase when the ...

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1 GHZ noise filter
24 March 2004
A new 0603-sized chip ferrite bead from Murata has high impedance from 300 MHz to several GHz and much reduced DC resistance, making it ideal for suppressing noise well into the GHz band. With DC resistance ...

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EMC block filters
10 March 2004, Retron, Security Services & Risk Management, Retail (Industry)
Schurter's new line of block filters offers a complete range of 1-phase units with a wide range of current ratings: 5-30 A at 125/250 V a.c., 50-60 Hz. These filters are generally designed to perform ...

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Reliable and safe - protection components: Part I
10 March 2004, Electrocomp, Surveillance, Products & Solutions
Every year, electrical and electronic equipment suffers billions of dollars worth of damage as a result of inadequate protection. The greatest dangers are excessive voltage, current and temperature. Their ...

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Temperature detector protects circuits
25 February 2004, Actum Electronics
Limitor's temperature detector P can be used wherever protection against overtemperature is required. Specific applications include: protection of primary windings in transfomers, winding protection in ...

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Low capacitance suppressors for high speed data lines
25 February 2004, Tempe Technologies, Asset Management, Commercial (Industry)
The 0603ESDA electrostatic discharge (ESD) suppressor from Cooper Bussmann, using its SurgX polymer technology, helps protect sensitive electronic devices, data lines and personal computers from extensive ...

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Surge voltage protection for LAN interfaces with increased performance requirements
25 February 2004, Phoenix Contact, Infrastructure
The Datatrab D-LAN-CAT.5E surge voltage protector from Phoenix Contact is a surge voltage protection device designed for the interfaces of important data transfer systems such as Ethernet, Token Ring ...

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Cymaziz .Net helps diet specialist trim the application fat
February 2004, Software Solutions
Software developer and Web specialist Cymaziz Computer Services has designed a general administrative application for The Diet Everyone Talks About, the countrywide diet programme franchise. The development ...

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Protection: three functions, one component
28 January 2004, Electrocomp, Access Control & Identity Management
Epcos has developed ceramic components that combine EMI and ESD protection with additional filter functions in a miniature 0405 case. As well as the familiar single-resonance components, EMI filters in ...

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Harmonic attenuators
5 November 2003, Sivan Electronic Supplies
Cosel's harmonic attenuator (complies with IEC61000-3-2) has a universal input of 85-264 V a.c. and can run in parallel operation and parallel redundancy operation. It includes ...

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Noise suppression resistors reduce high frequency electromagnetic interference
10 September 2003, Electrocomp, Surveillance
Noise suppression resistors are wirewound resistors that are especially designed to reduce radio frequency interference (RFI) caused by high electrical voltage discharges generated by automotive ignition ...

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Surface-mount fuse clips
10 September 2003, Altron Arrow, Perimeter Security, Alarms & Intruder Detection
For automotive applications Harwin's vertical entry, surface-mount fuse clip specifically designed to accept blade fuses typically found in automotive and related applications. The SMT fuse clip is designed ...

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