Siemens 3VA1 100 A Manual page 331

Installation
Installation
Regardless of the type of connection system installed on the 3VA1 molded case circuit
breaker, the residual current devices RCD320 and RCD520 are mounted on the load side
(i.e. beneath the thermal-magnetic trip unit) of the breaker:
1. Dismantle the loadside connection components of the molded case circuit breaker and
install the supplied connection components for the residual current device.
2. Insert the residual current device into the T slots of the molded case circuit breaker.
3. Push the residual current device backwards until its rear panel is flush with the rear panel
of the molded case circuit breaker.
4. Screw the molded case circuit breaker to the residual current device. Special connecting
screws are provided on the line side of the residual current device for this purpose.
5. Place a contact hazard protective cover over the circuit breaker/RCD assembly.
6. Reinstall the loadside connection components of the molded case circuit breaker at the
outgoing feeder end of the residual current device.
7. Attach the assembly to a mounting plate using the fastening screws.
Note
Since the outgoing feeder end of the residual current device has exactly the same
connection contours as the 3VA1 molded case circuit breaker, all connection accessories
such as phase barriers, terminal covers, etc. can also be mounted on the residual current
device.
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
Accessories
4.8 Residual current devices
331