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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:

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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:

Maximum door cutout IP40:

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Handle and release are freely accessible, the control cabinet door closes flush with the molded case circuit breaker.