Accessories
4.6 Motor operators
3VA molded case circuit breakers with IEC certificate
352 Manual, 03/2019, A5E03603177010-03
Connection diagram for control of the SEO520 motor operator
The SEO520 motor operator is edge-controlled, i.e. it reacts only to the positive edge of an
ON or OFF command at the relevant terminals 3 and 4. In this case, the OFF signal is
dominant, i.e. the motor operator will be switched off in response to an OFF edge even if an
ON signal is applied.
The SEO520 requires a pause period of 80 ms between the end of an OFF signal and the
edge of an ON signal. Since the OFF signal is dominant, it does not require a pause period.
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