Communication-capable Circuit Breakers

WL Circuit Breaker

Safety Guidelines

This manual contains notices which you should observe to ensure your own personal safety, as well as to protect the product and connected equipment. These notices are highlighted in the manual by a warning triangle and are marked as follows according to the level of danger. This equipment contains hazardous voltages. Death, serious personal injury or property damage can result if safety instructions are not followed. Only qualified personnel should work on or around this equipment after becoming thoroughly familiar with all warnings, safety notices, and maintenance procedures contained herein. The successful

and safe operation of this equipment is dependent upon proper handling, installation, operation and maintenance.

Danger

For the purpose of this manual and product labels, DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Warning

For the purpose of this manual and product labels, WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Caution

For the purpose of this manual and product labels, CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

Attention

Draws your attention to particularly important information on the product, handling the product or to a particular part of the documentation.

Qualified Personnel

For the purpose of this manual and product labels, a qualified person is one who is familiar with the installation, construction and operation of the equipment, and the hazards involved. In addition, he or she has the following qualifications:

(a)Is trained and authorized to energize, de-energize, clear, ground and tag circuits and equipment in accordance with established safety practices.

(b)Is trained in the proper care and use of protective equipment, such as rubber gloves, hard hat, safety glasses or face shield, flash clothing, etc., in accordance with established safety practices.

(c)Is trained in rendering first aid.

Correct Usage

Note the following:

Warning

This device and its components may only be used for the applications described in the catalog or the technical descriptions, and only in connection with devices or components from other manufacturers which have been approved or recommended by Siemens.

This product can only function correctly and safely if it is transported, stored, set up, and installed correctly, and operated and maintained as recommended.

Registered Trademarks

WinPM.Net is a registered trademark of Siemens Energy & Automation. MODBUS® is a registered trademark of MODICON. Some other designations used in these documents are also brands; the owner's rights may be violated if they are used by third parties for their own purposes.

Excel and Explorer are registered trademarks of Microsoft Corporation. Java is a registered trademark of Sun Microsystems. Netscape is a registered trademark of AOL Time Warner.

WL MODBUS Communication and Electronic Accessories • January 2005

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Siemens UL1066, UL 489 specifications Safety Guidelines, Qualified Personnel, Correct Usage, Registered Trademarks

UL 489, UL1066 specifications

Siemens UL1066 and UL489 are essential components in the landscape of electrical equipment, specifically in circuit protection and control. These standards ensure reliability, safety, and efficiency in various applications, including industrial, commercial, and residential settings.

The Siemens UL1066 is primarily focused on disconnect switches. These devices are designed to isolate electrical circuits, ensuring the safety of both personnel and equipment during maintenance or in case of faults. One of the key features of UL1066 disconnect switches is their high breaking capacity, enabling them to handle significant fault currents without failure. This characteristic is crucial in protecting downstream equipment from damage caused by short circuits. The UL1066 switches are also known for their robust construction, often featuring a metal enclosure that enhances durability and environmental resistance. Additionally, these switches can be operated manually or remotely, offering flexibility in operation and control.

On the other hand, Siemens UL489 circuit breakers provide comprehensive protection against overcurrents and short circuits. These devices not only interrupt fault currents but also protect connected devices from damage due to overload situations. Key features of UL489 circuit breakers include adjustable trip settings, which allow users to customize the response to overcurrent conditions based on specific application requirements. This adaptability makes them suitable for a wide range of environments, from large industrial plants to smaller commercial buildings.

Both UL1066 and UL489 products are constructed with advanced technologies, such as thermal-magnetic or electronic trip mechanisms in UL489 devices, ensuring precise and timely interruption of fault currents. These technologies promote energy efficiency and stability within electrical systems. In addition, many of these devices are equipped with indication features, providing clear visual status cues for quick assessment in emergency situations.

In terms of characteristics, both UL1066 and UL489 devices adhere to rigorous testing and certification processes to meet UL standards. This compliance assures users of their performance and reliability. Furthermore, the devices are designed to accommodate a wide range of operating temperatures and environmental conditions, making them versatile choices for various applications.

In summary, Siemens UL1066 and UL489 devices are paramount in ensuring safety and efficiency in electrical circuits. Their advanced features and robust construction make them indispensable in protecting both personnel and equipment in an array of industrial and commercial applications.