For installations needing duplicate equipment sets, for reasons of operational security or to meet peak loading demands, Finder has introduced a flexible multi-function priority change relay, providing convenient control of main and secondary systems.  Suiting for example, pumping or refrigeration applications, the 72.42 relay has been designed to alternate the duty of two sets of equipment to ensure even wear over time.

The relay can be configured to alternate the output duty either on successive applications of the supply voltage or via an independent input control signal.  The 72.42 relay also provides a second input enabling both outputs to be forced on in response to a peak demand or an alarm signal.

To minimise any switch-on current surge, the 72.42 relay incorporates an adjustable output delay timer, supporting for example the staggering of pump motor starts.  In addition, where maintenance of either equipment set is needed, the relay will ensure that only the healthy equipment set is made available.

Available in 24V and 110V to 240V AC/DC versions, the 72.42 relay supports a wide supply range and with two independent NO output contacts rated at 12A, 250VAC, is capable of directly switching single phase motor loads up to 0.55kW.  Output status is shown by dual LED indication.

Finder’s priority change relay is provided in a 35mm wide housing and is designed for 35mm rail mounting (EN60715).  The relay terminals are screw type and the unit’s protection category is IP20.

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With a host of design features to improve both reliability and efficiency, the 78 Series of switched mode power supplies from Finder gives control system builders a stable and dependable low voltage DC supply.  91% efficient, and drawing only 0.4W in standby, this series of modular, rail mounted DC power supplies comprises 24VDC, 36W; 24VDC 60W and 12VDC, 50W output variants that support universal AC or DC supply ranges, respectively 100-265VAC and 140-370VDC.

Integrating the latest protection technologies, the 78 Series includes: thermal protection with fast output voltage shutdown; short circuit protection with ‘hiccup’ (auto-recovery) mode and overvoltage (varistor) protection.  In addition, the power supplies’ high inrush current handling capability means they will safely tolerate loads with high current transient characteristics, such as capacitive circuits and solenoids fitted with ‘economy’ resistors.

To help minimise downtime in the event of a fault, the power supply inputs are protected by an easy access internal fuse, with an adjacent spare fuse ensuring an even more immediate fix.  Able to be interconnected in either dual (bi-polar) or series configuration, multiple 78 Series power supply outputs can also be ORed using standard diodes to support both manual and automatic redundancy schemes,  further augmenting control system reliability.

Measuring only 70mm wide and 60mm deep, these highly compact 35mm rail mounted power supplies can also help to reduce control panel size.  Qualified to EN60950-1 and EN61204-3 normes, they are fully compliant with global EMC standards for power supply design.

Click on the Link Below to access Finder 78 Series Information
Finder 78 Series - Switch Mode Power Supplies

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Finder has announced the introduction of a pair of panel thermostats designed to maintain constant temperature levels in control panels and enclosures.  Suiting the needs of both simple and sophisticated heating and ventilation systems, the 7T Series thermostats help to improve component reliability and preserve instrumentation accuracy through enhanced temperature setting and control.

With red or blue temperature setting dials to clearly identify the heating and ventilation variants, the 7T thermostats are IP20 rated and come in slim 17.5mm rail mounting housings, ensuring easy installation and usage in compact panel designs.

A temperature setting range of between 0 and 60ºC makes them suitable for a wide range of environments, while their snap action bi-metallic sensor means a positive switching action and a long electrical life (100,000 cycles).  The thermostats’ output contact (normally closed for heating control, normally open for ventilation control) is rated at 250VAC, 10A, enabling them to directly switch heater or fan loads up to 2500VA AC1 and 250VA AC15.

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Finder has announced the introduction of a range of eight modular, 22.5mm wide rail-mounted timers designed to provide a complete range of timing functions, while keeping part number holdings to the absolute minimum.  The multi-voltage 83 Series of multi-function and mono-function timers handles 14 different timing functions, with time scales between 0.05 seconds to 10 days and offers either single or double pole variants.

To maximise flexibility the timers support a very wide working voltage range, from 24V through to 240V AC or DC, making them suitable for mains or low voltage AC operation as well as DC battery supplies.  With changeover contacts rated for 16A, the 83 Series is capable of switching AC1 loads of up to 4KVA or single phase motors up to 0.5kW.  For easy maintenance, both flat blade and cross head screw drivers can be used to adjust the range and function selectors, the timing trimmer and to disengage the rail mounting clip.

The single pole 83.01 and double pole 83.02 multi-function timer variants both offer up to 8 different timing functions, including a special watchdog function allowing users to monitor repeating processes by resetting the time period each time a “watchdog” pulse is received, with the continuous presence or absence of a pulse beyond the set time triggering the release of the output contacts.

The 83.02 timer also provides the facility of external potentiometer time setting, enabling the timer to be adjusted from the front of control panel or enclosure, whilst assuring the security of timer function and time scale settings.  In addition, to further maximise flexibility and minimise part number stocking, it also offers users the option to select between either 2 timed or 1 timed and 1 instantaneous contact.

The third multi-function timer in the series, the 83.91 provides 4 asymmetrical flasher timing functions: starting pulse on; starting pulse off; as well as starting pulse on and starting pulse off both with a control signal input allowing timing to be initiated from a remote sensor operating at a voltage other than the supply voltage.

Completing the 83 Series timer range are 3 single pole mono-function timers:  the 83.11 for on-delay; the 83.21 for interval; 83.41 for off-delay with control signal; and a pair of 2 pole mono-function timers: the 83.62 for power-off delay (true off-delay) and the 83.82 for star-delta timing function.

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Finder has introduced a new family of ultra-slim relay interface modules that provides a low-cost, space-saving solution for a host of industrial applications. The 39 Series MasterINTERFACE range incorporates an innovative, replaceable fuse for output circuit protection, plus busbars and terminals that substantially simplify input and output wiring.

Housed in a compact 6.2mm wide package, the 39 Series offers integral coil protection circuitry across the gamut, as well as a secure retention and ejection clip, and terminal screws suitable for blade and crosshead screwdrivers. Five dedicated module types are offered, designed to meet the specific requirements for basic, enhanced, input, output and timer interface functions.

Available with electromechanical or solid state relays for general interfacing applications, the MasterBASIC features common link supply terminal positions, allowing the use of a 16-way jumper link. The enhanced MasterPLUS module adds the option of a quick connection replaceable output fuse and special leakage current suppression versions to mitigate any detrimental effects caused by residual current in the input circuit. Both the MasterINPUT and MasterOUTPUT incorporate additional busbar jumper links and terminals necessary for the full connection of 2- or 3-wire input devices and output devices respectively, thus reducing component cost, time and panel space. The MasterTIMER is a multi-function and multi-range device with DIP-switch selection of 4 time scales and 8 functions, with timer delay adjustment achieved via an easy-to-access rotary knob on the top surface of the module.

A range of accessories is available to support the 39 Series relay interface modules, including red, blue and black 16-way jumper links, and dual purpose separators (1.8mm or 6.2mm) for the visual or protective separation of groups of interfaces operating from different supply voltages, or for the protection of cut ends of jumper links. The MasterADAPTER permits the easy connection of A1/A2 terminals of up to 8 MasterINTERFACE modules to PLC outputs via a 14-way ribbon cable, plus simple 2-wire power supply connection, providing significant wiring savings.

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Two separate catalogues now available for: Industrial Applications; Commercial and Residential Applications

Finder has announced the availability of two new catalogues for 2011/12 detailing the company’s complete product range. The catalogues, one aimed at Industrial applications and the other targeting Commercial and Residential applications, contain essential reference information on timers, relays, interface modules, sockets and accessories for designers and buyers of electronic and electrical systems.

The 360-page Industrial Catalogue includes new series of interface relays, solid state relays, surge protection devices, panel thermostats and timers. This latest edition is divided into 3 product sections: plug-in / PCB relays; relay / interface modules; timers and monitoring relays. There are comprehensive specifications and ordering data for all products. For relays this includes coils, contacts, insulation and life figures, performance graphs, connection and dimensional diagrams. For timers and monitoring devices the catalogue features full illustrations and explanatory timing charts, switch settings, display and LED indication, along with application notes and guidance. To simplify ordering, all related socket and accessory information immediately follows the main product data.

In addition, an extensive general technical information section provides background on reference standards, terminology and definitions. This section has been expanded to include data on contact load classifications, UL approval file numbers and contact material characteristics.

The 78-page Commercial and Residential edition specifically focuses on energy saving lighting control, movement detection, time switch and temperature control products and features new items such as modular contactors, dimmers and room thermostats. Full technical and ordering data is provided together with performance and setting illustrations.

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Finder has announced additions to its 18 Series of PIR motion detectors supporting a variety of interior energy saving schemes.  The compact 18.21 and 18.31 variants will meet the needs of higher ceiling, higher load switching applications and those requiring direct interface to a PLC or BMS.

Recess mounted, the flush fitting 18.31 suits suspended or plasterboard ceilings while the 18.21 is a low profile PIR for hard surface mounting.  Providing a 10 amp rated normally open volt free output, the detectors will switch loads at any voltage and are not restricted to 230VAC mains tasks.  24V ac/dc supply versions are also available for applications without a mains supply or where safe, low voltage operation is required.

With a 110º wide sensing angle and a reach of 2.8m, the 18.21-0300 and 18.31-0300 PIRs will handle all types of regular ceiling height applications.  For high bay or extended ceiling height duties, the 18.31-0031 PIR variant offers a much longer sensing range of up to 8m.

The Finder PIRs also offer an adjustable light threshold setting allowing operation to be varied according to ambient light conditions.  In addition, an enhanced light-on time adjustment of up to 35 minutes makes the PIRs well suited to HID lamp applications, which for reasons of preserving lamp life, place a restriction on the number of starts per hour.

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Finder has extended its relay range with versions designed to suit photovoltaic (PV) inverters, domestic appliances and other equipment needing reinforced insulation, high ambient temperature handling and full disconnection contacts.  The latest product introductions comprise the 45.31 16A rated mini PCB relay and 3 special variants of the 66 Series 30A rated power relays.

With an extended 3mm contact gap, the single pole NO 45.31 relay meets the requirements of the EN60730-1 standard for household use and is rated for operation at an ambient temperature up to 105ºC.  It has a high sensitivity 24V DC coil rated at 360mW.  In common with the 66 Series specials, the 45.31 has been designed with an 8mm clearance and creepage distance, ensuring safe separation of supply and output, and reinforced insulation between coil and contacts, meeting the requirements of EN60335-1 (VDE0700).

The 2 pole NO (DPST-NO) 66.22-x600, 66.22-x600S and 66.82-x600 30 amp power relays ensure a contact gap separation of 1.5mm, fully meeting the requirements of the VDE0126-1-1 standard for PV inverter applications.  In addition, the 600S variant provides a 5mm airgap between relay base and PCB for extra cooling particularly in systems where forced air cooling is employed as with many PV inverters.

For added flexibility, the 66 Series relays provide the options of PCB and flange mounting and Faston 250 terminations.  A 35mm rail mounting adaptor is also available.  A wide range of coil voltages is offered, spanning from 6V through to 125VDC.

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Finder has introduced surge protection devices (SPD) designed specifically for photovoltaic (PV) panel installations.  Additions to its popular 7P Series of SPDs, three new Type 2 surge arresters will protect PV systems from the effects of lightning strike and electrical switching transients.  The products are already supporting the company’s own PV panels at its primary manufacturing plant.

Featuring encapsulated spark gap and/or replaceable varistor modules, the three devices protect the more vulnerable DC side of commonly used earth free and mid point earthed PV systems.  The range includes: the 7P.26.9.420, providing 2 varistors and 1 spark gap for 420V DC systems; the 7P.23.9.700, providing 3 varistors for 700V DC systems and the 7P.23.9.000, providing 3 varistors for 1000V DC systems.

Each device integrates both a visual indicator and a signalling contact to warn when a varistor module needs replacing.  Connection to the signalling contact is via a convenient plug-in terminal block.  The SPDs comply with EN 61643-11 standard and can be 35mm rail (EN 60715) mounted.

Finder’s introduction of a range of SPDs tailored to the needs of PV installations comes at a time when UK government Feed-In Tariffs (FITs) appear to have stimulated a step increase in interest in PV system in the country.  The UK is now the fastest growing market for PV solar energy installations, estimated to produce 96MW of electricity in 2010 compared with 6MW in 2009.

At the same time, a prospective revision of the UK wiring regulations, placing far more emphasis on the provision of protection from electrical surges, has meant there is a resurgence of interest in associated products, in particular varistor and spark gap type SPDs.

PV panels at Finder’s prime manufacturing site in Almese near Turin in North West Italy have been producing an output power of 55kW since early 2009, equating to 61,000 kWh/year.  So pleased with the performance, the company has this month commissioned a further 60kW of PV panels, which of course will be protected by the new 7P Series surge arresters.

Constructed using multicrystalline silicon PV modules, Finder’s initial PV system is calculated to have reduced CO2 emissions by about 37 tons/year, achieving annual cost savings of around 11 TOE (tonnes of oil equivalent).

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Finder has announced a complete family of 25A contactors, purpose designed for switching lighting, pump and motor loads in noise sensitive installations.  Incorporating an AC/DC silent coil with varistor protection, the 22 Series modular 2- and 4-pole contactors help meet the need for quieter operation, particularly in home, hotel and hospital environments.

Provided in compact 17.5mm and 35mm wide housings, the 22 Series contactors include a standard 35mm rail mounting for simple consumer unit installation and both mechanical and LED status indicators for enhanced system diagnostics.  The contactors’ minimum 3mm double break NO contact gap and protective separation between coil and contacts ensures installation safety standards are met.

Offering both 2- and 4-pole contactors, a choice of contact materials and multiple contact configurations, the versatile 22 Series provides users with 47 different options from which to select the optimum switching solution.  For extra flexibility, an add-on auxiliary contact block and an auto-on-off selector switch variant are also included in the series.

The contact material options are AgNi and AgSnO2, the first intended for resistive and slightly inductive loads as well as motor loads, the latter for lamp loads and high inrush current loads.  The contact configurations for the 2-pole products are 2NO, 1NO+1NC and 2NC and for the 4-pole products, 4NO, 3NO+1NC and 2NO+2NC.  The auxiliary contact block is provided in 1NO+1NC and 2NO versions.

The Finder 22 Series 25A modular contactors are designed and tested in accordance with EN 61095: 2009, electromechanical contactors for household and similar purposes.

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