In previous tests, the rocket carried payloads mainly designed for verifying the performance of the launch vehicle.
This time, the rocket was topped with eight working satellites, including a “commercial-grade satellite”, according to the science ministry.
More than 200,000 viewers were watching the livestream of the launch on YouTube, with one commenting: “Fly high Nuri! Let’s go to space!”
SPACE RACE
South Korea has laid out ambitious plans for outer space, including landing spacecraft on the Moon by 2032 and Mars by 2045.
In Asia, China, Japan and India all have advanced space programmes, and the South’s nuclear-armed neighbour North Korea was the most recent entrant to the club of countries with their own satellite launch capability.
Ballistic missiles and space rockets use similar technology and Pyongyang claimed to have put a 300-kilogram satellite into orbit in 2012 in what Washington condemned as a disguised missile test.
The South Korean space programme has a mixed record – its first two launches in 2009 and 2010, which in part used Russian technology, both ended in failure.
The second one exploded two minutes into the flight, with Seoul and Moscow blaming each other.
Eventually, a 2013 launch succeeded, but still relied on a Russian-developed engine for its first stage.
Last June, South Korea became the seventh nation to have successfully launched a one-tonne payload on their own rockets.
The three-stage Nuri rocket has been a decade in development at a cost of 2 trillion won (US$1.5 billion).