Schurter has created the latest addition to the existing snap-in front panel mount circuit breaker. The popular fuse holder style, single pole thermal circuit breaker series T9 is now also available with threaded-neck and snap-in versions for rear mounting. The threaded-neck type is available with an IP 65 rated cover, which provides protection against environmental conditions such as dust or jetting water. Its tripping operation is cycling trip-free.

Circuit breakers with the fuse holder style body are ideal substitutes for panel fuses where inrush currents cause nuisance trips, or aging of the fusing element overtime. Resetting the circuit can avoid unnecessary downtime and maintenance costs associated with replacing fuses. Improper replacement with the wrong current rating is also prevented. The circuit breaker button extends to indicate when the circuit is interrupted. The button returns to depressed status when pushed-to-reset.

Typical applications include power supplies, UPS, PDUs, power tools, industrial appliances, medical diagnostic and analysis appliances, lighting, sports and hobby machinery or HVAC. The T9 series meets UL standard 1077 for Supplementary Protection, CSA C22.2 235, IEC 60934 and GB 17701. Current ratings range from 4 - 16 Amps at 240 Volts AC and 48/32 Volts DC.

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Finder has announced the launch of the 97.11 and 97.12 sockets for PCB mounting of its 46 series miniature industrial relays. These sockets allow engineers designing power control equipment to mount a plug-in power relay with robust terminals in a simple manner onto a PCB. They are particularly suitable for circuit boards where the ability to change power relays quickly is essential for maintenance and the minimising of downtime in the event of a fault.

There is a growing trend towards the use of PCBs in power control applications, but engineers wish to maintain the benefit of rapid component replacement that they enjoy with traditional plug-in rail mounted components – this is the need addressed by these new additions to the 97 Series of sockets.

The 97.11 and 97.12 sockets have a small 12.4mm x 32mm footprint, minimising board space requirements, and maintain the full 6kV coil-to-contact isolation specification of the relay. An integral retaining clip ensures that the relay is firmly retained when used in applications where they may be subject to shock or vibration, and the sockets carry C UR approval for the US.

The 46 Series relays, which fit the sockets, includes both single-pole and two-pole contact configurations for use in control panels and systems. The relays are fully terminal-compatible with the de-facto industry standard, with Faston spade/blade terminals that provide secure and reliable connections between the relay and the 97 Series socket.

The new sockets complete the line up of 46 series relay mounting options that already include a range of 35mm rail mounting sockets – the 97.01 and 97.02 screw connection models and the 97.51 and 97.52 screwless connection versions – as well as flange-mounting and direct-rail mounting adaptors that allow the use of either Faston or soldered connection to the relay terminals. All the 97 Series rail mounting sockets will accept the full range of 99.02 coil indication and suppression modules and the 86.30 bi-function, multi-range timer modules.

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Introducing the New Low Depth E-Stop

Johnson Electric / Saia-Burgess are proud to announce the introduction of probably the world’s smallest behind panel depth emergency stop switch as the latest introduction to the TH Contact range.

• Low profile behind panel
• Compact
• Suitable for small portable equipment
• Certified to the latest international safety standards
• Illuminated LED options
• Rotary reset in 3 styles
• Environmental protection to IP65

Requiring less than 20mm profile, the new TE1 series outperforms even the best.  With approval to EN418 standards (pending), 30mm or 40mm diameter buttons, 3 styles and illuminated options, the TE1 is the obvious choice when you demand the ‘best in class’ safety equipment components for your machine users.

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October 25, 2007 - Crydom, an operation of Custom Sensors & Technologies (CST), announces the first solid state relays available on the market with UL approved short-circuit current ratings (SCCR). These relays facilitate industrial control panel builders' efforts to comply with the new article 409 from NEC and the latest version of UL508A, both request SCCR marking, by providing them with pre-approved ratings for SSR/fuse combination.

According to Dr. Oscar Montero, from the Crydom Global Technical Center, "Standard 5kA SCCR on power devices prevents panel builders from offering panels with higher ratings. Panels with a higher SCCR could be connected to electrical systems with different available currents bringing market advantages for panel builders. However, establishing a higher SCCR may represent significant challenges and additional costs for panel builders."

Crydom's approved ratings allow panel builders to establish the SCCR for the branch circuit where the relay is located without performing additional testing. The ratings can be added directly to the manufacturer's procedure. Hence, effectively reducing the time-to-market cycle for the panel and cost associated to compliance.

Crydom has obtained UL approval for SCCR by testing the combination SSR/Fuse under the "umbrella fuse" requirement allowing more flexibility to Crydom customers to mix and match SSR and fuses of different ratings.

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Schurter’s TA35 series introduces a new generation of Circuit Breakers for Equipment. The breakers are available in 1-, 2- or 3-pole arrangements and stand out through their compact form and attractive design. The rocker-actuating switch can be supplied either with or without illumination in six different colours with various legends or customer specific symbols. The breakers have been designed for efficient snap-in mounting, fitting panel thicknesses ranging from 1 to 4 mm. Connections are made with 6.3 x 0.8 mm quick connect terminals. 

The TA35 provides both the function of a switch as well as thermal overload protection. It has finely graduated rated currents of 0.05 A to 20 A for the 1- and 2-pole types, or 0.05 A to 12 A for 3-pole versions. An optional protective cover gives a protection class of IP 65, making the unit suitable for applications exposed to dust or splashing water; typical applications are laboratory equipment for chemical and medical applications, wood and masonry processing machines, construction site equipment, power generators, cleaning equipment, food-processing equipment and appliances.

The new circuit breaker series is approved according to IEC 60934, UL 1077 and CSA C22.2 235 and has received or is pending VDE, cURus and CCC approvals.

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Schurter is pleased to announce the new series 5003 Filtered Power Entry Module for DC applications.  The new, compact filter is designed for DC power supplies used in Information Technology Equipment. The 5003 features a standard DC connector offered in two different connector styles.

The connector is encased with a 1-stage filter for rated currents 3, 6, 10 and 15A. It provides an outstanding wide-band absorption rate in frequencies ranging from 100 kHz to 30 MHz. The unit mounts to the equipment enclosure with a metal flange, thus providing a large contact area for optimal shielding of the panel opening. A version for front or rear mounting is secured using screws and nuts, or rivets.

A version specifically for rear mounting features pre-formed, threaded holes for M3 screws. This version eliminates the requirement for nuts, reducing costs and automating assembly. The 5003 fulfills the requirements of IEC/EN/UL 60950 for use in IT equipment, and is pending certification according to UL/CSA up to 15A at 125VDC. Applications include LAN and WAN devices, such as routers, switches and multiplexers.

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Finder has announced the launch of the 93.21 series multifunction timer socket, for use with the 34 series electromechanical and solid-state relays. The sockets are aimed at panel builders, systems integrators, OEMs and installers of control systems for machines and processes, and also for applications in building management systems (BMS). They are particularly suitable for use where space constraints are a major consideration, or where rapid output switching and long operational life are required.

The ultra slim sockets are only 6.2mm in width, making them ideal for use in systems where the available mounting space is minimal. Their multifunction and multirange capabilities, along with the ability to accept either plug-in electromechanical or plug-in solid-state relays, means that a single socket model is suitable for a wide range of applications, with the added benefit that the switching element is easily replaceable.

The timer sockets feature 4 time ranges with intervals ranging from 0.1 – 3s up to 0.3 – 6 hours, and 4 selectable timing functions – ON delay; ON pulse; Symmetrical recycling with ON start; and fixed pulse delayed. Precision of regulation over the entire scale is specified as ±5%, and maximum switching capacity is 6A.

The 93 series timer sockets operate at a DC or AC supply voltage in the range 12 – 24V. Both screw and screwless termination options are available for flexibility in integrating with both types of wiring system, and a tamper proof setting mechanism avoids accidental maladjustment. The sockets can be used with 20 way jumper bars, which helps to save time in wiring common connections.

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Finder has announced the introduction of the 41.81 series of solid-state relays, which offer silent, high-speed switching of AC or DC loads, to meet the need for relays that operate reliably at rapid machine cycle rates, with minimum maintenance and without incurring mechanical wear.

The 41.81 series is aimed at designers and system integrators of automation and processing equipment, including mechanical handling, assembly and filling machines, and will be particularly suited to applications requiring high operating speed and long electrical life, especially those where silent operation is also desirable.

The solid-state relays are available in AC and DC output switching types. Type 41.81-9024 switches 1.5V to 35V DC, nominally 24V, at current levels up to 5A. Type 41.81-8240 switches 240V AC nominal (12 – 275V max.) at 3A, and features zero crossing switching to minimise electrical interference. Both models feature a low power 0.2W coil. Maximum peak current is rated at 120A for a period of 10ms, making the relays suitable for use with high inrush inductive or capacitive loads.

The relays are housed in a small, low profile, wash-tight RT111 package with an industry standard pin layout. The package offers flexibility in mounting options: it is suitable for mounting either directly onto a PCB or into a 93 series socket, which in turn can either be fixed to a PCB or mounted onto a 35mm DIN rail.

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Big Power in a Small Package!  Crydom PCB Mount Solid-State Relays Reduce Panel Space Requirements While Maintaining Power Capabilities

Crydom, an operation of Custom Sensors & Technologies (CST) and North American Leader in solid state relays, announces the most extensive line of standard and custom PCB mount power solid state relays available to the European and Asian markets. These relays offer ratings from 1 amp to 25 amps (forced air) at line voltages up to 660Vac., which makes them ideal for literally hundreds of commercial and industrial switching applications. Their compact design is also well suited for high-density PCB applications. Moreover, these relays contain no moving parts, which provides for silent operation and life expectancies at full-load current in excess of 50 times most electromechanical relays.

These compact solid state relays are ideal for use in numerous commercial & industrial applications, including: electromechanical relay replacement, pump control systems, gaming equipment, vending machines, security systems, medical equipment, solenoid control, packaging equipment, printing machines, and much more.

Versions are available with either a zero-crossing (resistive loads) or random turn-on (inductive / phase control loads) output. UL Recognition, CSA Certification, VDE Approval, and CE Compliance available on most models.

• Ratings up to 25A (forced air) @ 660V AC
• SCR output for heavy industrial or commercial loads (most versions)
• Available in standard in-line, mini in-line, or dual in-line packages
• Life expectancy in excess of 50x typical electro- mechanical relays at full-load current
• No moving parts eliminates all acoustical noise
• Not sensitive to magnetic fields
• Custom models available upon request
• RoHS Compliant

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Crydom Solid State Relays (SSRs) are utilized in the lighting industry in a wide range of applications. Beside the obvious on-off supply control, or for the remote power switching points for centralized automated control, Crydom SSRs find widespread use in high power dimming systems for theatrical, industrial and residential applications, as well as airport lighting controls, parking lot lighting, safety lights and energy saving systems for commercial and industrial lighting.

The Crydom MCPC series of microprocessor based proportional controller/SSR modules significantly reduce the amount of design effort and components required to incorporate phase angle dimming control in lighting systems while improving reliability and life.

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