Operator Interfaces, Switches & Relays


Latest Articles

A more economical approach to sensible pump motor protection
January 2007, NewElec Pretoria
The motor protection relay under discussion is likely to be more expensive than other less expensive products available on the market. According to NewElec, this is true at least in the short ...

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Pro-face introduces GP3000 Series operator interface terminals
December 2006
Pro-face has released details of a new range of touch screen displays and an all-new screen editor software platform. The new GP3000 Series is a complete lineup of graphic operator interface panels created ...

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Sensor-to-computer interface units
December 2006
Advantech's ADAM-4000 series modules are compact, versatile sensor-to-computer interface units designed for reliable operation in harsh environments. Their built-in microprocessors, encased in rugged ...

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Tamper-proof piezo electric HMIs
December 2006
The Everswitch range of piezo electric human machine interfaces (HMI) include single switches, keypads, control panels, illuminated switches and full size keyboards. Everswitch products are tested up ...

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Relays prevent costly downtime
December 2006, NewElec Pretoria
NewElec's OLR 8 relays are designed to monitor one phase of the main motor circuit to provide running stall (jam) protection for selected applications ensuring accuracy as well as repeatability in performance. ...

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Earth leakage protection relays
December 2006, NewElec Pretoria
NewElec's GA range of earth leakage protection relays reliably disconnects the supply voltage in a faulted network in the event of voltage insulation failure. This results in a leakage current flowing ...

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Programmable pressure switch/transmitter
December 2006, Instrotech
Instrotech's PA-22 PS is a compact programmable pressure switch. It also has an analog transmitter output signal (0,5 to 4,5 V) and will continuously monitor a process via the analog signal. The switch ...

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Improving earth leakage protection for your motors
November 2006, NewElec Pretoria
In line with industrial standards and demands, the modern electronic motor protection relay needs to improve the manner in which earth leakage protection is provided. The setting of the earth leakage ...

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Motor protection for coal cutting machinery
November 2006, NewElec Pretoria
NewElec's 100 M Series motor protection relays are designed for installation inside relatively confined spaces, flameproof enclosures and gate-end boxes to meet very specific protection requirements of ...

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Comprehensive protection for hard working electric motors
November 2006, NewElec Pretoria
The 320 to 327 Series motor protection relays from NewElec provide protection for TEFC S1 rated LV and MV metric motors with optimised core laminations and windings and reduced thermal overload capacity. Accurate ...

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Motor protection relays that prevent bearing failure
November 2006, NewElec Pretoria
Two of NewElec's customers recently lost motors due to bearing failures. All too often an excellent motor protection product is selected for the protection of relatively large kW motors that are subsequently ...

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Relays designed for crane motor protection
November 2006, NewElec Pretoria
NewElec's 330 Series motor protection relays are designed to meet the protection demands of wound rotor motors used on winches, overhead cranes and winders taking into consideration their unique duty ...

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New intelligent control relay for hazardous areas
December 2006
Bartec, one of South Africa's leading suppliers of electrical and electronic products for hazardous areas, has launched the MFDex multifunctional display. This product, in combination with the easy 800 ...

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All round motor protection relay
October 2006, NewElec Pretoria, PI SA (PROFIBUS & PROFINET SA)
A low voltage motor protection relay is available from NewElec with a 150 x 85 mm footprint that includes its own current transformers and an earth leakage core balance within the housing. The relay ...

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Economical protection for LV AC motors
October 2006, NewElec Pretoria
The LA motor protection relays from NewElec are designed to protect LV AC motors from overloads, locked rotor, unbalance and phase loss conditions. Economical and user-friendly, the microprocessor relays ...

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Compact indicator light shows sensor status in restricted visibility applications
October 2006, Turck Banner Southern Africa
Banner Engineering has introduced EZ-LIGHT indicator lights for remotely indicating sensor status. Designed for use when the placement or distance of a sensor limits its visibility, the EZ-LIGHT offers ...

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GO Switch in power generation plants and mining applications
September 2006, Switches International
The 70 Series GO Switch can be used on conveyor belts as an alignment switch. Belt alignment is critical for a coal or limestone conveyor. Coal is needed to fuel the boilers and limestone is used for ...

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Rugged new microwave blocked chute switch
September 2006, Allpronix
New versions of the microwave blocked chute detector are now available from Alltron Instruments. These include a long range version (100 m), as well as a smart version (signal strength). The microwave ...

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New high-performance LED displays from Kübler
September 2006, Turck Banner Southern Africa
Kübler's new improved CODIX displays from their 54X Series offer many new functions, higher performance and improved ease of operation. These CODIX displays, which come in the popular 48 x 96 mm (1/8 ...

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Pushbuttons for use in hygienic applications
August 2006
Schlegel's RVA series of control units are hand-operated electrical components for use in rough service areas. This series has a mounting diameter of 22,3 mm and being manufactured out of special steel ...

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