When safety is paramount and required to conform to increasing amounts of new legislation, Finder’s 7S Series forcibly guided contact relays offer a competitively priced and compact solution for designers and engineers who require confirmation of the functional integrity of critical circuitry.

Class A forcibly guided contacts rated at 6A, 250VAC and conforming to EN50205 requirements, make the 7S Series suitable for many safety related applications.

The screwless terminals allow for quick, vibration-resistant connections, and the availability of 2, 4 and 6 pole versions makes the relays suitable for a wide range of uses in machine and plant control systems and energy generation, as well as water supply and treatment. Utilizing materials that comply with UNI 11170-3 for fire and smoke characteristics, and meeting the requirements of EN 61373 and EN50155 for mechanical and climatic characteristics also ensure they are suitable for railway applications.

With an operating voltage range spanning 0.7 to 1.25 of nominal, Finder’s new 7S Series tolerates a wide supply variation.

Standard gold-plated or notched crown contacts provide high reliability switching, with a minimum load rating of 60mW.

Meeting the requirements of EN 13849-1 for functional reliability in machines and plant engineering, the 7S Series relays are housed in compact 22.5mm rail mounting enclosures equipped with quick-connect cage clamp terminals and LED coil status indication.

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Obsolete Saia-Burgess Parts

Although Saia-Burgess has discontinued the manufacture of the popular part M3BRMA there continues to be regular on-going demand for this switch from varied industries and applications.

Contact E. Preston Electrical to receive information about the alternative offered for this obsolete part.  Equivalent part for M3BRMA is now available with virtually the same form, fit, function and quality that will make this part available long into the future.

What about other Saia-Burgess obsolete parts.  We also offer direct alternatives to old parts such as M3BRML, 4CRQ, 4CR7, 4CRQR2, CB, CBL, CQR2, CR Series, CT Series & PN4 Series.

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Hylec-APL's latest small sized Paguro junction box utilizes an innovative adaptor which allows it to accommodate a wide range of cable diameters whilst still maintaining good cable retention. The junction box is ready packaged with a silicone sealing gel to ensure IP68 ingress protection.

* Specialised adapters allow secure entry for cables between 6.5mm to 12mm Ø
* Small footprint of only 44 x 95 x 24mm
* Supplied with 3 or 4 pole terminal block.
* Silicone gel is supplied pre-loaded so the product is ready to use.
* The silicone gel features a unique elastic memory which enables re-wiring of the junction box without replacing the gel.
* IP68 protection provides ingress protection when fully submerged in water or buried below ground. 

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Switch in Accordance with Latest ADR 2011 Regulations

E-T-A Circuit Breakers, quality designer and manufacturer of a broad range of electro-mechanical and electronic products for circuit protection, offers the BMS01 Battery Master Switch designed for hazardous goods carrying road vehicles that comply with the European International Carriage of Dangerous Goods by Road (ADR) regulations. The environmental protection and intrinsically safe control circuitry of the BMS01 are in accordance with ADR 2011. The battery master switch also satisfies the additional requirements of UK operators. The BMS01 will serve as an emergency shut down switch as well as disconnecting and reconnecting the vehicle’s electrical system when loading and unloading.

The double pole E-T-A BMS01 Battery Master Switch is installed close to the vehicle’s battery, between it and the electrical system: it can also be connected to act as a single pole device. The battery master switch can then be operated by means of a control switch in the cab, with optional additional control switches sited around the vehicle as required. Upon disconnection of a control switch, the main contacts of the BMS01 will open after a preset delay to allow for the controlled shutdown of computerised engine management systems. A choice of two delay times is offered, with auxiliary contacts providing output for an audible alarm during the delay period. Additional auxiliary contacts are provided for disconnection of the ignition circuit and de-energising of the alternator field winding. There is also a permanently energised protected output for the tachograph supply.

A choice of low voltage monitoring is available if required: it offers automatic disconnection of the battery after one minute, or signalisation, if undervoltage is detected while the vehicle is idle. This offers protection of the battery from the effects of deep discharge and ensures there is sufficient battery capacity for re-starting the engine.

12v and 24V versions of the BMS01 are available. An integral ATEX-approved safety barrier permits siting of the unit in hazardous areas. The master switch features a housing protected to IP65 with rubber caps on the terminals offering protection to IP54. A bi-colour LED on the body of the master switch provides clear status signalisation of the battery isolation switch and low voltage detection.

E-T-A can supply suitable control switches for the BMS01, protected against inadvertent operation. An externally mounted switch assembly is also available incorporating the green “ON” status indicators mandatory in the UK.

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Schaffner has added the RB series to its product program of current-compensated chokes. The chokes are available as one- and three-phase designs in horizontal and vertical construction for currents from 16 to 50A.

Characteristic of the RB series are the open construction and clear separation of the windings by the use of a new bobbin design. With forced cooling the chokes can operate with up to 80A. The air gaps and leakage paths are designed for working voltages of up to 600Vac /1000Vdc.

Particular value was set on the pin-out of the chokes to permit a simple layout of the circuit boards. A straightforward circuit path design has advantages in terms of losses and noise suppression, especially for applications at higher current levels.

An application note also provides important information how to integrate EMC/EMI filters into circuit boards.
As a result, the EMC/EMI filtering can be incorporated into the circuit board of power electronic devices, such as inverters for drive applications, for photovoltaic or for charging stations. The RB chokes can be mounted directly to the circuit boards and are thus applicable for electronic devices that are exposed to vibration.

RB chokes comply of course with the RoHS and REACH requirements.

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Crouzet Limited has added to its comprehensive range of DIN rail mounted timers with the addition of its new ‘essential’ range.

Featuring CE approval, the new EMER8, EMAR7 and EMAR9 timers compliment the popular MUR1 unit and come with 1 x 5 A changeover, relay output and feature a timing range of 0.1 seconds to 20 hours.

The single function (on delay) EMAR7 comes as 240VAC whilst the EMAR9 is 24VAC/DC.  The multifunction EMER8 timer is 12 to 240VDC and 24 to 240VAC and features a wide range of functions including:

A – On delay
At – On delay with memory
B – Timing on impulse (One shot)
C – True delay off
H- Timing on energisation
Ht – Delay on energisation with memory
Di  & D – Symmetrical flashing
W – Timing on impulse (One shot)
Pe – Impulse counter (On delay)

Specifically aimed at volume users of DIN rail mounted timers, all 3 products, EMER8, EMAR7 and EMAR9 are available in single packs (with a minimum quantity of 30 pieces) or alternatively bulk packs of 60 units provide even greater economies of scale.

The timers are ideal for a wide range of applications including lighting control, HVAC, industrial machinery and process control.

Detailed datasheets on all 3 timers can be found by visiting  www.crouzet.com

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With the SHT 6.3x32, Schurter is expanding its range of high-voltage equipment fuses.   The high breaking capacity of 1500 A at rated voltage opens up many interesting application possibilities.   The SHT 6.3x32 is available as a fuse link or pigtail version.   Both models protect personnel and electronic systems from overcurrent and potential fires resulting from catastrophic short circuit events.

Schurter is initially offering the SHT 6.3x32 in ten rated currents from 1 to 8 A.   The fuse stands out due to its high breaking capacity of 1500 A at a voltage rating of 500 VAC. Besides a wide range of applications in the energy and industrial sectors, the SHT 6.3x32 is especially well suited for the protection of 3-phase systems

Schurter offers the SHT 6.3x32 as a fuse link or a version with pigtails. Fuse links can be used in clips and fuse holders, which allows easy replacement of fuses without de-soldering.   Schurter offers
a broad range of such clips and fuse holders suited for use with the SHT 6.3x32.   The pigtail version allows direct assembly on printed circuit boards by means of through-hole technology and soldering.   As a fuse that conforms to RoHS, the SHT 6.3x32 can be put to use in lead-free systems.  Compatibility with the most important competitive products allows SCHURTER to offer the SHT 6.3x32 as a form, fit, and function substitute product.   The SHT 6.3x32 fuse is cURus approved.

Technical features and benefits:
- High voltage ratings up to 500 VAC
- High breaking capacity of 1500 A @ 500 VAC
- Range of rated currents from 1 to 8 A
- Time lag (T) characteristics according to UL 248-14

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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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Schurter presents - the Transipillars - for rugged and insulated board-to-board and board-to-chassis mounting, consisting of stud & insert in varying nylon body sizes

Transipillars are spacers known for providing a rugged insulating mounting system, consisting of studs and inserts with a nylon body. The combination of various lengths and metric threads allows a versatile use of the Transipillars. The parts are available in various sizes as stud / stud version, stud and insert or insert / insert combinations in cylindrical or hexagonal form. Customized versions are available on request.

* Material: stud threads steel zinc plated, insert threads plain brass, body nylon 66
* Dielectric strength > 11k VDC
* Insulation resistance > 10’000 M @ 500 VDC (min thickness 1 mm)
* Operating temperature -20 °C to +80 °C
* Various combinations of thread sizes, lengths and forms
* High mechanical strength

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Hylec-APL has launched a new series of control stations; manufactured and assembled by Hylec company, DE Controls. The new control stations combine tough IP67 enclosures with hard wearing push button and twist switches and are supplied with snap-on brackets for quick and easy wall, chassis and DIN rail mounting.

* Features a time-saving snap-on bracket mounting option.
* Patented range of control stations available exclusively from Hylec-APL.
* Up to IP67 protection available.
* Conforms to EN418 'latch-before-break' safety standard.
* 5mm wall thickness provides enough strength to replace many metal enclosures.
* Available with a huge range of buttons and switches; many variations available pre-assembled.
* Complete with 2 x M20 threaded cable gland entry.

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