This part is a kind of semiconductor called 3TG1001-0BB4.

Function of this product has Power Relays/Miniature Contactors.

Manufacturers : Siemens

Image and pinout :

Some of the text within the PDF file :

© Siemens AG 2008 3TG10 Power Relays/Miniature Contactors 4-pole, 4 kW ■ Overview Version The 3TG10 power relays/miniature contactors with 4 main contacts are available with 6.3 mm × 0.8 mm screw terminals or flat connectors. The versions with screw terminals are climate-proof and finger-safe according to EN 61140. The 3TG10 power relays/miniature contactors are small. Their width is 36 mm. ■ Application Because they are hum-free they are suitable for use in household appliances and distribution boards in office and residential areas. They can also be used for applications where there is little space such as air conditioners, heating systems, pumps, and fans, i.e. for simple electrical controls. AC and DC operation EN 60947-4-1 Surge suppression 3 The 3TG10 power relays/miniatur [ ... ]

3TG1001-0BB4 PDF Datasheet Download