New to the Finder range of energy consumption meters is the three-phase 7E.36 Series, which includes single and dual-tariff kWh models for the measurement, recording and display of power consumption in individual sub-circuits at current levels up to 65A.

The meters are particularly applicable where there is a statutory need for compliance with the EU Measuring Instrument Directive (MID) 2004/22/EG which comes into force in October 2006. The current pressure to reduce energy consumption is also driving the need for accurate monitoring and measurement in specific areas.

The 7E.36 Series meters provide a compact, accurate and easily-installed solution to metering three-phase energy consumption, and are ideally suited for use by manufacturers and installers of machinery and equipment, control systems manufacturers, contractors, site service engineers and designers of building management systems (BMS). Typical areas of use include industrial and commercial installations, test cells, machines, control cabinets and switchboards.

Type 7E.36.8.400.0000 is a single-tariff 3-phase meter, and Type 7E.36.8.400.0002 is a dual-tariff version for use with standard and economy tariff supplies. Both meters are specified for a maximum current rating of 65A, and are housed in a compact 70mm wide enclosure that can be surface mounted or fitted to a 35mm DIN rail, allowing them to be installed in confined spaces or mounted on standard sub distribution boards.

The meters feature 4mm high, 7-digit display(s) including a red decimal digit, to provide an easy-to-read display with a maximum totalising count of 999,999.9kWh. A high resolution pulsed open-collector output to DIN 43864 provides a link to BMS or other types of remote monitoring system. A variable rate pulsed red LED indicator offers a rapid visual indication when abnormal operation is occurring, for example due to phase loss or inversion. Terminal covers are also available to enable a tamper-proof seal to be fitted.

The 7E.36 Series is compliant with EN 62053-21 and prEN 50470 as well as with the EU MID 2004/22/EG, and is certified by PTB (Physikalisch-Technischen Bundesanstalt). Accuracy is specified to Class B and protection to Class II.

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SCHURTER is pleased to announce the new series 5120 Filtered Power Entry Module, added to a list of proven predecessors.  Refined for optimal performance in the smallest package, the new compact filter is particularly suited for single-phase power supplies used in Industrial equipment, Information Technology Equipment and Medical Devices, which are governed by stringent EMC emission and immunity standards.

The series is dimensioned as a 1-stage filter for rated currents 1, 2, 4, 6, 10 and 15A. The unit has an outstanding wide-band absorption in the frequency range from 100kHz to 30 MHz with a leakage current standard Enquiry Form: https://www.epreston.co.uk/contact/

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Overview:
Includes standard size basics, miniature, subminiature, hermetically sealed, high temperature and special application switches. The precision snap-action mechanisms are available with a wide variety of actuators and operating characteristics. These products are often ideal for applications requiring compactness, light weight, accurate repeatability and long life. This family also includes pushbuttons, toggles, rockers, key switches and indicators for use where manual operation is desired.

http://content.honeywell.com/sensing/prodinfo/basicswitches/

Best Used For:
Used for presence/absence detection where physical contact with the object is permissible. Often ideal for applications requiring compactness, repeatability and long life.

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The 4C Series is a new series of single-pole and two-pole relay interface modules from Finder that incorporate Finder’s flagship 46 Series miniature industrial relays, and are available in either screw terminal or screwless socket types. The modules provide an ideal interface between programmable logic controllers (PLC) or other electronic controllers and external actuators or switching devices, where outputs are required to switch higher than normal external loads such as large contactors, solenoids, small motors or heating elements.

The 4C.01 and 4C.02 are respectively a single-pole 16A and a two-pole 8A relay interface module, both with screw terminal connections, while the 4C.51 is a screwless single-pole model rated as 10A and the 4C.52 is an 8A two-pole screwless version. All four models are available with either AC or DC coils, and can be mounted on a 35mm DIN rail (EN 50022). They feature instant ejection of the relay from the socket by means of a plastic retaining clip, and include as standard both a supply status indication and coil suppression module.

An 8-way jumper link is available as an optional extra for use with the 4C.01 and 4C.02 modules, and reduces the time taken to wire common connections.

The 4C.01 and 4C.02 screw-type terminal modules both measure 82.9mm long x 64.6mm high x 15.8 mm wide, while the screwless 4C.51 and 4C.52 versions both measure 95.6mm long x 61.7 mm high x 15.8 mm wide. The cadmium-free relay contacts are fabricated from silver nickel (AgNi) material.

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E-T-A Circuit Breakers has published new 2006/07 editions of its separate CBE (Circuit Breaker for Equipment) and Control Products catalogues, which can be requested free by telephone, email or from the company web site. Providing comprehensive technical details, the catalogues have been expanded to include all the latest product developments.

The latest 2006/07 edition of E-T-A’s Circuit Breakers and Control Products / CBE Catalogue now runs to over 500 pages.  The 100 page increase reflects, in particular, the expansion of products offering electronic overcurrent protection for selective protection of components in industrial plants, as well as solid state remote power controllers and power distribution systems.  The catalogue provides a complete specification of each E-T-A product and is broken down into 10 clearly thumb-tabbed sections. These sections also include four different classifications of CBEs and explanations of their characteristics and how to choose between them for a given application.

The 2006/07 edition of E-T-A’s Electronic Process Sensors – Electronic Switching and Control / Control Products Catalogue contains 410 pages with 9 thumb-tabbed sections, again including all the latest products. Sections include flow meters and monitors, level and velocity sensors, digital panel instruments, and current and voltage monitors.  All sections are clearly indexed with summary overviews and contain descriptive details of every product. Photographs and fully dimensioned drawings are included, together with technical data, CBE switching characteristics and product ordering information.

Copies of the two catalogues can be requested from E. Preston (Electrical) Ltd (0161 339 5177), e-mail  sales@epreston.co.uk or via the web site at https://www.epreston.co.uk/, which also offers further information on the E. Preston Electrical range of products.

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Finder introduces the 72.31 three-phase monitoring relay, which is used for detecting a loss of phase or incorrect phase rotation when using three-phase supplies. This compact relay is ideally suited for the protection of motors in plant and machinery, and helps to satisfy the mandatory requirement of ensuring the correct rotation of motors in transportable equipment.

The 72.31 allows OEMs, panel builders and installers of control systems to ensure that motors do not become permanently damaged due to phase loss, and also to avoid potential hazards or damage due to incorrect rotation of the motors. The relay features positive safety logic, which triggers the contact to open if an error is detected so that the system will fail to a safe condition. The wide supply voltage specification allows a single unit to be used across the full three-phase supply voltage range of 208V to 480V AC.

The relay provides reliable monitoring of phase loss, even under conditions where the lost phase may be “regenerated” by the action of the rotating motor. This phenomenon is not uncommon, and many monitoring relay units that are currently available may falsely detect this phase regeneration and thus fail to disconnect the supply, which can cause damage to the motor. The 72.31 can discriminate phase regeneration up to 80% of the line voltage.

Featuring a SPDT output contact rated at 6A (maximum peak 15A), the 72.31 monitoring relay is enclosed in a compact housing measuring 84mm high x 56.5mm deep x 17.5mm wide. The narrow profile offers considerable saving in panel space.

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"Matching 3-position switch version available for 2-speed fans, wipers, etc."

E-T-A Circuit Breakers has introduced a new combined switch and circuit breaker for push-fit mounting in switch panels. Its attractive, contoured, ‘soft’ feel rocker actuator with dual illumination and choice of both colour and ‘marine’ legends make it a first-line choice for builders of power-boats and yachts. A 3-position switch version of matching design enables all combinations of switching and circuit protection to be provided in one stylish control panel grouping.

The new E-T-A 3131 combined switch and thermal overcurrent circuit breaker provides snap-in, panel-mounted, single pole protection against both limited short circuits and low level, but potentially very harmful, overload currents. The integral overload protection negates the need for fuse holders or additional circuit breakers, thus offering great advantages for boat users and simplifying the wiring circuits. Models are offered in current ratings from 0.1A to 20A at up to 50V DC/240V AC for single pole applications. The complementary E-T-A 3131 three-position switch with matching actuator design offers the additional switching required for units such as 2-speed fans and wipers.

The ergonomically styled rocker actuator on both versions of the E-T-A 3131 is soft to the touch and offers two illumination options with a number of different permutations possible.   Splash water protection is assured even in the toughest nautical conditions with its IP66 rating. The 3131 CBE is one of the smallest and lightest products of this type on the market, making it ideal for the protection of circuits and equipment including vital navigation and communication equipment.

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Whatever your application, Saia-Burgess have the product and the development capability to supply the most appropriate solution, anywhere in the world.  Now we’ve pushed the button on more competitive pricing, the quality of Panel Mounted switches from Saia-Burgess is matched by their affordability.

These and many other Saia-Burgess products are available from:

E. Preston (Electrical) Ltd
    Broadway, Globe Lane Industrial Estate
    Dukinfield, Cheshire, SK16 4UU
    United Kingdom
    T  +44 (0)161 339 5177
    F  +44 (0)161 343 1935
    sales@epreston.co.uk

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ABB has extended its compact range of switches as part of its on-going replacement program for the OETL and OESA ranges. Up to 48% smaller in size, the OS and OT switches are ideal for applications where time, cost and space are at a premium.

ABB's OT switch disconnectors and OS fuse switch-disconnectors can be used as the main switch in low voltage switchgear for power distribution, starting and stopping of motors and isolating loads during maintenance. Available in metal or plastic enclosures, they can be used as safety switches to prevent accidental starting of machines. As further protection, the external operating handles have been double-insulated, which eliminates the chance of touching live parts. The fuse covers also cannot be opened when the switch fuse is on.

The reduced size of both OT and OS switches means that almost double the number of panels can be fitted onto a board that is approximately 1.3m x 2.3m, compared to their OETL and OESA range equivalents. This is ideal for installations where space is limited or at a premium.

Both OT and OS switches can be installed vertically or horizontally, enabling users to position them according to the location of the incoming supply. They are fully rated for both enclosed and open environments, negating the need for extra space if the switches are being used in an enclosure.

The OT range is available from 16A up to 800A. The OS range provides coverage from 16A, up to 400A, with the OESA continuing to provide up to 800A.

Both the OT and OS switches feature a mechanically-based design, with metal parts and double brake switching as standard. These features help to prolong the operational life of the products compared to units from other manufacturers which typically use plastic and ceramic parts. It also increases safety by providing double isolation from live parts. Further safety is provided by arc-chutes, which prevent current sparks and flashovers.

The OT range is IP20 protected, providing extensive protection against impacts from small objects such as debris being expelled by a nearby machine. It also has a patented operator independent quick-make / quick-break mechanism, providing better responsiveness and reliability when in use.

With the neutral wrapped around the main switch mechanism combining to make one unit, the OT and OS switches save space, as opposed to separate space being required for the neutral connection outside of the switch.

Two-pole or one pole versions of the switches can be produced on request. The OT and OS ranges are modular in design, providing increased flexibility on installation. Adjustable mounting feet allow the feet to be fitted at 45 or 90 degree angles.

The switches are suitable for a number of applications, ranging from motor control centres to acting as a main switch in machine applications. OT and OS switches are commonly used by water authorities, transport rail networks and in offshore applications.

ABB have also introduced change-over switches to their OT range. Available from 160A up to 800A, the change-over switches are two switches in one, and increase the ways in which the switches can be applied. It also reduces the need for separate change-over mechanisms.

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