Ravioli S.p.A. is a dynamic and worldwide renowned manufacturer of mechanical and electromechanical devices for industry.
Founded in 1926 and based in Milan, Northern Italy, Ravioli S.p.A. is very well known all over the world, thanks to the development of a solid and reliable network of dealers and partners, started more than 30 years ago. Designing, projecting, testing, and assembling in-house all the products, Ravioli maintains the production strongly rooted in the territory, guaranteeing the high-quality standards of Made in Italy, accordance to EU Norms and Directives, user-friendly design, customer care, and technical assistance as well as innovative and updated solutions for each product.
The Company is constantly improving and enriching its range of products, studying the best solutions to every industrial application. Aware of the cultural and technological differences among the numerous markets in which Ravioli operates worldwide, the Company studies everyday specific approaches and solutions suitable for each Country, in full respect of Norms, Directives, and requirements of end-users in each market. The satisfaction of the customer and the flexibility to provide customized solutions are key factors of the success of the Milanese Company.
All the products are manufactured in-house in the productive site of the Company’s Headquarters in Milan and, according to its strong commitment to respecting the environment, to make the world a better place to live in, and to protect the artistic and cultural beauties and the treasures of Italy, Ravioli is today one of the 200 Corporate Golden Donors of FAI – Fondo Ambiente Italiano – to contribute to and support their daily activities of safeguard and enhancement of Italy. Ravioli is also a member of Confindustria for Sustainability.
D.C. Contactors for TECNO Series
Main features of the range
The TECNO series contactors’ range, compact but powerful, has been designed to be suitable for the traction and material handling fields using direct current.
Such contactors can be applied to lift trucks, industrial cleaning machines, various services on board of ships and boats, as well as to road and rail transport vehicles.
The d.c. coils feature terminals with 6 mm connections for the TECNO 6 series and screw connections for the TECNO 4 series.
Standard duty is :
- for T 106, T 206 intermittent operation (80 %)
- for T 154, T 204 intermittent operation (80 %)
- for T 106 C , T 206 C intermittent operation (50%) with maximum working time of 15 minutes ( temporary duty ).
Normalized voltage is : 12 - 24 - 36 V
Different coils with continuous duty are available on series T 106 – Option P.
The cover is completely protected from oil, water and dust.
The contactors have silver alloy double breaking contacts, resistant to arc, suitable for heavy duty. The TECNO 6 Series is formed also by contactors with main contacts 1NO and 1NO+1NC; further it is possible to provide a motor reverser that includes both the d.c. contactors 1NO+1NC with the electrical connections. NC contacts are not suitable for making or breaking current.
Correct use of the motor reverser
The used contactors have fast drop-out time (8 msec) and relatively long pull-in times (approx. 25 msec). In this way, safe reversals can be carried out the risk of the contacts being closed at the same time. The use of suppressor diodes, however, increases drop-out time, and therefore it is important to choose the most suitable type of suppressor (diode + resistor).