Residual current circuit breaker, 40A, 30mA, 4 pole, type A CDA440J

Innovative vertical comb rails - A quick, easy and safe way to connect selected devices in 2- or 3-rows of the switchgear
Description field with a protective flap - Clear and aesthetic marking of apparatus is now even easier thanks to the printouts from the Semiolog program and a transparent protective flap.
Safety and protection against errors - Protection against contact with IP2x, also with the use of phase busbars. Elimination of errors when inserting the wire into the terminal thanks to protective caps.
2 position indicators: contacts and residual current trip - Complete and unambiguous definition of the cause of the RCD trip (especially important in fault diagnostics).
Comprehensive offer - Devices available in the range of rated currents from 0.5 to 125 A, in