Class 3 may refer to: *

BR Standard Class 3 2-6-0 The BR Standard Class 3 2-6-0 was a class of mixed traffic steam locomotive designed by Robert Riddles for British Railways. It was essentially a hybrid design, the chassis being closely based on and sharing a number of parts with the LMS Ivatt ...

, British steam locomotive * BR Standard Class 3 2-6-2T, British steam locomotive *

Classes of United States senators The 100 seats in the United States Senate are divided into three classes for the purpose of determining which seats will be up for election in any two-year cycle, with only one class being up for election at a time. With senators being elected ...

* L&YR Class 3, British 4-4-0 steam locomotive * SCORE Class 3, off-road racing trucks * The third class in terms of hiking difficulty in the

Yosemite Decimal System The Yosemite Decimal System (YDS) is a five-part Grade (climbing), grading system used for rating the difficulty of rock climbing climbing routes, routes in the United States and Canada. It was first devised by members of the Sierra Club in Southe ...

* A class in US

truck classification Truck classifications are typically based upon the maximum loaded weight of the truck, typically using the gross vehicle weight rating (GVWR) and sometimes also the gross trailer weight rating (GTWR), and can vary among jurisdictions. United ...

* Class 3, in the electrical

Appliance classes Appliance classes (also known as protection classes) specify measures to prevent dangerous contact voltages on unenergized parts, such as the metallic casing, of an electronic device. In the electrical appliance manufacturing industry, the followi ...

* A contribution class in the National Insurance system in the UK

See also