2.8.1
Connections
The connections on the ETU are illustrated in the diagram below:
①
②
③
④
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02
Interface for an external current transformer for N conductor
Interface for connection of an EFB300 external function box
Interface for connection of an RCD820 residual current device
Connection for test devices TD300 and TD500
Description
2.8 Electronic trip unit
87