5SM1 Residual current circuit breaker(residual current device,RCCB)
5SM1 earth leakage circuit breaker is applied to in AC circuit of frequency of 50HZ,rated voltage up to 415V,rated current up to 80A.
It is mainly used as indirect contact protection for human,and it also can be used to prevent against the fire danger caused by earth fault current owing to equipment insulation damage.
When the protective measures of the electric shock are out of work,the RCCB whose rated residual operating current less than 30ma can serve as the supplementary protection for in direct contact,but it can not be used as the sole direct contact protection.
1)5SM1 series are the protector for pure electromagnetic residual current operation
2)The operation function is unrelated to circuit voltage,but operaton is reliable
3)It can be reliably operated on the loss of phase or neutral
4)The capacity of resisting electromagnetic interference is strong
3.Main technical data
Rated residual current
Cross-section of connecting lead
A type, AC type
New 5sm1 siemens rccb
Rated current :6-100A
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