The Swiss franc firmed against the dollar and was flat against the euro on Tuesday as continued fighting in Libya and concerns over a damaged nuclear plant in Japan held equities in check and buoyed the safe haven franc. German inflation data due later in the morning could bolster expectations for a European Central Bank interest rate hike, which have supported the euro in recent sessions, although some analysts said a rate rise seem largely priced in.
The franc climbed 0.2 percent against the dollar to 0.9145 francs per dollar.