Degrees of protection
3VA molded case circuit breakers comply with the following degrees of protection as defined by IEC 60529 and IEC 60947‑1, Appendix C:
Degree of protection IP40 is achieved when a 3VA molded case circuit breaker is installed in a switchboard with a door cutout including release (see below). The units can be upgraded to comply with higher degrees of protection up to IP65 by installation of the following components:
Door mounted rotary operator
Side wall mounted rotary operator
Maximum door cutout IP40:
Handle and release are freely accessible, the control cabinet door closes flush with the molded case circuit breaker.