India, Nepal and Pakistan have standardised on a plug which was originally defined in British standard BS 546.
It has three large round pins in a triangular pattern.
The relevant Indian standard is IS 1293:2005
Plugs and Socket-Outlets of Rated Voltage up to and including 250 Volts and Rated Current up to and including 16 Amperes and the rated current for this size is 6A.
The BS 546 standard is also used in parts of the Middle East (Kuwait, Qatar) and parts of Asia and South East Asia that were electrified by the British. This type was also previously used in South Africa, but has been phased out in favour of the 15 A version there. In Sri Lanka, Ghana, Kenya and Nigeria, the plug has been mostly replaced by the British BS 1363.