Ideally suited to protect against overcurrent and short circuit of equipment in telecommunications, process control and other industrial applications where sophisticated equipment requires a high precision performance.
A latching type bimetal is combined with a magnetic coil to ensure protection and genuine physical contact isolation. This provides the joint benefits of delayed operation for low level overcurrent protection and fast magnetic action of higher value short circuits, disconnecting the faulty circuit within milliseconds.
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E-T-A not only offers electronic overcurrent protection and thermal or thermal-magnetic circuit breakers, but another type of protection: magnetic and hydraulic-magnetic circuit breakers. What characterises these devices and in which applications are they used?
Circuit breakers and protectors with magnetic or hydraulic-magnetic trip principle are extremely fast and ensure genuine physical isolation. In the event of a short circuit, the magnetic trip mechanism disconnects a defective circuit almost without delay. The circuit is disconnected even at low overloads. The
hydraulic-magnetic trip principle provides an intentional delay in the overload range. You can choose from a wide range of device versions.
The 808 version is a single-pole, polarised circuit breaker with magnetic fast trip mechanism. An uncomplicated switching system ensures eliable disconnection even for the smallest overcurrents. The device can also be used for impulse tripping. The compact design and the fast reaction time are specifically suitable for PCB mounting to protect sensitive electronic components installed there. The device is available with fixed current ratings from 0.01 A to 5 A, which makes this circuit protector highly suitable for fragile loads. Another quality feature is its low temperature sensitivity. Thanks to its extremely compact design of only 30 x 20 x 10 mm (H x W x D) when installed, the 808 version can be mounted on virtually any PCB.
E-T-A’s 8335 circuit breakers for equipment protection are available as single- or multi-pole version with magnetic or hydraulic-magnetic trip principle. They provide toggle actuation, front panel mounting, different characteristic curves and optional auxiliary contacts. The precise switching mechanism ensures reliable disconnection through an independent tripfree mechanism even for the smallest overcurrents.
Like all magnetic devices, they feature low temperature sensitivity at rated load. They are available with a rated current range from 1 A to 50 A and have a very compact design. They are suitable for AC and DC voltages.
The 8335 devices offer economic overcurrent protection for telecommunication applications in the Economy Power-D-Box®. This a a compact power distribution system with only two height units (HU). The redundantly designed rack can be customised with plug-in type magnetic or hydraulic-magnetic 8335 or 8340 circuit breakers.
This product group is very attractive - not only because of the already mentioned benefits of the hydraulic-magnetic circuit breakers - but also because of its many mounting options. Type 8340 and 8340-F devices are available with flange or snap-on mounting. This design version is suitable for the use in the telecommunications / datacom industry. In industrial applications, however, DIN rails are more commonly used. This area is covered by the 8340-T version. The users here appreciate the 8340-T specifically because of its integral auxiliary contacts and the wide temperature range of -40 °C to +85 °C. The 8340-G version is mounted via threadneck. They are normally used e.g. in rail vehicle applications.
When you need a device with many different approvals, the 8345 is the device of choice. With a slim design of only 19 mm, the device can carry rated currents of up to 125 A, which is more than any other device of this product class. It is available with instantaneous, extremely fast or very slow trip curve. It can be extended with additional module options for signalling or remote trip. Thanks to its international approvals, this device can be used in telecommunication applications worldwide and protects the digitisation hardware against damage caused by overcurrents.
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Dive into topics such as the efficient E-Box for enhanced productivity, the speed and power of our magnetic and hydraulic circuit breakers, and best practices for electronic vehicle protection.
READ HERE! E-T-A CURRENT Magazine
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Thermal circuit breakers (circuit protectors, resettable fuses, circuit breakers for equipment protection) are ideally suited to overload protection of motors, transformers, magnetic valves, on-board electrical systems and low voltage lines.
The trip time of thermal circuit breakers depends on the height and of the duration of the overload current and the ambient temperature. With higher current ratings, the bimetal or hot wire is heated up until the defined trip time is reached and the device ensures genuine physical isolation of the contacts.
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SCS Smart Control Systems - Intelligent CAN Solutions for Utility Vehicle
SCS1000 and SCS3000 – Logic and Power Distribution in One Module
New technologies and future oriented systems are crucial for the design of on-board electrical systems.
The growing number of electrical vehicle components and the need for data transmission between single devices quickly leads to large and heavy cable harnesses and increased wiring complexity.
The SCS3000 and SCS1000 series are extremely compact power distribution systems with integrated logic. The modules offer a wealth of functions together with high performance in a very small package. The SCS3000/1000 are ideal in terms of upgradeability for fleet modernisation, retrofits and projects where space saving is paramount.
Typical Applications:
Overview:
Space-Saving and Robust Through Efficient Semi-Conductor Technology:
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The REX12D intelligent system is ideally adapted to the requirements of machine construction and process control. The compact and modular design, the innovative connection technology and the great number of different devices provide a competitive edge over standard solutions to protect your DC 24 V power distribution.
By extending the functional scope of the REX12D system you are free to decide where to set your focus.
In the standard version, the EM12D-TIO supply module communicates with now 32 channels instead of 16 channels. The status of the channels is transmitted to the superordinate IO link master.
The extended version sets the focus on the recording of measuring values and on the analysis of these measuring data of 16 channels. By means of a cyclical transmission of the load currents, changes in the current consumption of individual loads can quickly be detected. This allows efficient control and maintenance and significantly cuts downtimes.
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The SPR10-T is a solid state remote power controller and is suitable for DC 12 V and DC 24 V applications. A special feature of the SPR10-T is that it combines switching and protecting functions in a single device. In addition, it offers status indication by means of LED and status output.
Unlike conventional electronic and mechanical relays, the SPR10-T provides integral overcurrent protection. An additional external overcurrent protection element is not required. In the event of a failure, only the faulty path is disconnected and the fault is indicated at the device or at the status output; all other circuits remain unaffected. This ensures quick and easy trouble-shooting and increases machine uptime and system availability.
Direct mounting on symmetrical rails allows fast and flexible installation. In addition, several devices can very easily be connected by means of busbars, reducing wiring time to a minimum.
With current ratings of 20A and 25A, the SPR10-T is particularly suitable for powerful loads with a high current demand and a cable cross sections up to 10mm².
The combination of these properties is, with a width of only 12.5 mm, an efficient and compact solution for your application. You do not only save components, storage costs and space in the control cabinet, but you also significantly reduce planning and wiring efforts.
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Our power relays are designed to withstand the tough requirements of the commercial vehicle industry, especially for construction and agricultural machinery. With the new plug-in connector compatible with the HDSCS series we are now also part of the connection technology in modern on-board electrical systems.
The plug-in connector is made of robust thermoplastic with flammability class UL94 V0 and has an integrated secondary interlock with poka-yoke principle. Even under the toughest conditions the control connections can no longer come loose.
The cables can already be precut. During final assembly of the vehicle they are only to be plugged in and locked. Special tools such as tightening torques, Torx bits, crimping tools for cable sockets etc. are no longer required during final assembly.
The reverse polarity protected plug-in connection ensures a clear assignment of the control contacts.
The plug-in connector provides a robust and save connection. It is protected with IP 5k4 against penetrating dust and water.
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SCS200 - The Intelligent and Compact Power Distribution. Can-Capable Power Distribution for Decentralized Control and Monitoring of Loads with Comrehensive Diagnostic Functions.
More and more smart components in the vehicle and less and less installation space are topical subjects in the market. The SCS200 is the right answer to all these requirements.
It is an intelligent power distribution system, allowing decentralised control and monitoring of loads via the CAN bus. The design features a pcb-based power distribution in a compact IP67 enclosure. The SCS200 modules are plug-and-play solutions which help you reduce space and wiring time. Diagnostic capabilities (load current, voltage, load protection, status) and integral CAN connection ensure reliability and connectivity at the same time. The SCS200 was especially designed for the use in construction machinery, agricultural machinery and special vehicles.
Benefit:
Typical Applications:
Standards:
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E-T-A offers the world’s most comprehensive product portfolio and customised solutions in the areas of circuit breakers, circuit protectors, electronic overcurrent protection (DC and AC), relays and power distribution systems - intelligent, conventional or customer-specific.
Each E-T-A product holds competence, know-how and a reliability based on decades of experience. At the same time, one thing is always at the heart of our endeavours: E-T-A products protect lives and values.
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© E. Preston (Electrical) Ltd 2024.
UK distributor of electrical and electronic components.
