The TTB7025, a DC undervoltage and overvoltage relay, is designed for monitoring accumulator battery voltages and DC networks.

Variants can be provided for specific applications, such as :

• Protection of DC networks, supplying the relay from a shunt
• Speed measurements, by measuring the voltage output of a tachometric generator
• Detection of predetermined output levels from measuring transducers
• Over or undercurrent check on the excitation current in synchronous machines