Vacuum Contactors are available in large frame models.

Press Release Summary:



Sirius 3R contactors include 225, 265, 300, 400 and 500 A devices which perform 2.6 to 3.0 million operations at rated load. They are available with universal current conventional coils (24-600V ac/dc) and electronic coil. Electronic coil comes in 3 options: interface for direct control from 24 Vdc PLC or power supply, Remaining Lifetime to electronically measure contact erosion, and AS-interface module with RLT for communication over AS-interface bus.



Original Press Release:


SIEMENS OFFERS LARGE FRAME SIRIUS 3R VACUUM CONTACTORS


Expanding vacuum technology for use at lower currents

ALPHARETTA, Ga., March 12, 2002 - Siemens Energy & Automation, Inc., has expanded the use vacuum technology in its new large frame family of Sirius 3R contactors (115A to 500A) by offering vacuum contactors in the same size and current ranges for applications over 225A.

The new range of vacuum contactors includes 225A, 265A, 300A, 400A and 500A devices.

Vacuum technology has advantages over the traditional air-break
contactors, including a contact life nearly double that of traditional air-break contactors. Depending on the application, a vacuum contactor performs an estimated 2.6 million to 3.0 million operations at rated load, ideal for applications that have a high duty cycle. Contacts are also enclosed in a vacuum bottle, so there are no opening arcs or arcing gases.

Given these advantages, Sirius 3R contactors with vacuum technology can increase the cost-effectiveness of equipment and reduce maintenance measures. For added convenience, a remaining service life indicator on the front of the contactor allows for planning maintenance and service intervals.

The Sirius 3R vacuum contactor is available with universal current conventional coils (24V AC/DC to 600V AC/DC) and electronic coil. The electronic coil comes in three options: An interface that allows for direct control from a 24VDC PLC or power supply, Remaining Lifetime (RLT) to electronically measure contact erosion, and AS-interface module with RLT for communication over the AS-interface bus.

Headquartered in Alpharetta, Ga., Siemens Energy & Automation
manufactures and markets the world's broadest range of electronic products, systems and services to industrial and
construction market customers. Its technologies range from circuit protection and energy management systems to process control, industrial software and totally integrated automation solutions. The company also has expertise in systems integration, technical services and turnkey industrial systems.

Siemens AG (NYSE: SI), headquartered in Munich, is a leading global electronics and engineering company. It employs some 450,000 people in 193 countries, and reported worldwide sales of more than $74 billion in fiscal 2001 (10/1/00 - 9/30/01). The United States is Siemens' largest market, with nearly 80,000 employees and sales of $18.9 billion for fiscal 2001.

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