* U.S. consumer confidence falls to 10-month low in Feb.
* Dollar up vs euro on concerns about German economy
* U.S. crude oil stocks expected to rise
* French refinery strike enters seventh day (Updates throughout, changes dateline from LONDON)
NEW YORK, Feb 23 (Reuters) - Oil prices dropped more than $1 to below $79 a barrel on Tuesday, breaking a five-day rally, as a fall in U.S. consumer confidence and German business sentiment sent investors into safer havens, such as the dollar.
U.S. crude futures for April <CLc1> traded down $1.65 at $78.66 a barrel by 12:29 p.m. EST (1729 GMT). The March contract, which expired on Monday, hit $80.51 during its last day of trading, the highest price for a front-month contract since Jan. 13. In London, Brent crude <LCOc1> fell $1.56 to $77.05 a barrel.
U.S. consumer confidence fell in February to the lowest level in 10 months as consumers' short-term outlook for the jobs market worsened, according to a report by the Conference Board, an industry group. [
]German business sentiment fell for the first time in almost a year in February, suggesting a harsh winter may send Europe's largest economy sliding back into contraction in the first quarter. [
]The dollar accelerated gains against the euro after markets, already keyed up for testimony from the U.S. Federal Reserve chief later this week, saw sinking U.S. consumer confidence as a red light for risk. [
]Caution ahead of testimony from Federal Reserve Chairman Ben Bernanke on Wednesday also cut demand for risk. Bernanke will give his semiannual testimony on monetary policy and the state of the economy before the House Financial Services Committee.
"The overarching, unavoidable, inescapable fact is that consumers are still reeling from the effects of the greatest economic calamity of most of their lifetimes," Mike Fitzpatrick, vice president at MF Global in New York, said in a research note.
"They have been forced to deleverage in the face of possible job loss and foreclosure. Until they begin to return to work, economic growth is going to be grindingly slow and so will energy demand growth."
The market was awaiting U.S. oil stocks data due later on Tuesday and on Wednesday morning. A Reuters poll of analysts forecast the data will show a rise of 1.9 million barrels in crude oil inventories, the fourth weekly rise in a row as imports continued to increase. [
]The American Petroleum Institute, an industry group, was due to release its weekly oil data for the week to Feb. 19 at 4:30 p.m. EST (2130 GMT) on Tuesday, with data from the U.S. Energy Information Administration due on Wednesday at 10:30 a.m. EST (1530 GMT).
Oil prices took some support from strikes by French oil workers, which could close more than half the country's refining capacity. [
]Strikes at Total's <TOTF.PA> refineries entered their seventh day as workers protested against company plans to shut one of its six refineries permanently because of weak demand for fuel. Output has stopped at all the refineries.
Total <TOTF.PA> has pledged not to close or sell any French refineries other than its Dunkirk plant for five years, clearing the way to end a week-long strike that has embarrassed the government ahead of key March regional elections. (Reporting by Gene Ramos, Robert Gibbons and Matthew Robinson in New York; Ikuko Kurahone and Christopher Johnson in London and Alejandro Barbajosa in Singapore; Editing by Walter Bagley)