Configuration
6.3 Short-circuit protection
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
Manual, 09/2016, A5E03656507420A/RS-AB/003
65
Either fuses (fused design) or motor starter protectors/circuit breakers (acc. to UL) (fuseless
design) must be used for short-circuit protection. The types of coordination must also be
considered when selecting load feeders from the tables.
About coordination of
corresponding short-circuit
protective devices with overload
relays
in the configuration guide entitled "Configuring SIRIUS Modular
Systems - Selection data for load feeders in fuseless and fused
designs"
(http://support.automation.siemens.com/WW/view/en/50250592)
(article no.: 3ZX1012-0RA21-1AC0)
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