Siemens SIRIUS 3RH Series - Page 337

SIRIUS 3RF34 solid-state switching devices
3.5 Planning/configuring
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
337
Fuse ratings for solid-state reversing contactors
Table 3- 13 Fuses for protecting against high short-circuit currents
Fuses
3RF34 Max. size [A] Class Type Current [kA] Voltage [V]
3RF3403-.BD 45 J TD 65 480
3RF3405-.BD 45 J TD 65 480
3RF3410-.BD 45 J TD 65 480
Circuit breakers for protecting against high short-circuit currents
Table 3- 14 Circuit breaker ratings for solid-state contactors
Fuses
3RF34 Max. size [A] Type Current [kA] Voltage [V]
3RF3405-.BB 4 3RV1721 50 480
3RF3405-.BB 4 3RV1721 10 600
3RF3410-.BB 8 3RV1721 5 600
3RF3412-.BB 8 3RV1721 5 600
3RF3416-.BB 8 3RV1721 5 600
3RF3416-.BB 10 3RV1721 5 600
Table 3- 15 Circuit breaker ratings for solid-state reversing contactors
Fuses
3RF34 Max. size [A] Type Current [kA] Voltage [V]
3RF3403-.BD 4 3RV1721 50 480
3RF3405-.BD 5 3RV1721 30 480
3RF3410-.BD 8 3RV1721 5 480
NOTICE
Short-circuit currents
Short-circuit currents can result in material damage.
When combining solid-state switching devices and overload relays the device with the
lowest rated value is decisive as regards short-circuit fuse protection.