Terminal Block Strip Electrical Block Connector 3A 5A 10 Amp /36 Wire Connectors min and max current limit? - Electrical Engineering Stack Exchange

With reference to the picture below: The first block connector have a 3A shown beside, the second one with 5A and the third one have 10A. What do the 3A, 5A and 10A mean? Does it mean that the 3

Terminal Block Strip Electrical Block Connector 3A 5A 10 Amp /36