The 3-in-1 current transformer range is for use with the Eastron RJ12 meters which combines three traditional current transformers in one moulding case with a RJ12 connection for simple and easy error free installation.
3-in-1 current transformers can be directly installed next to a three-phase moulded case circuit breaker, thus saving installation time where fitting three standard individual current transformers would be required. In addition the the 3-in-1 current transformers, there is also a solid core single pole current transformer available for single phase applications. All current transformers are supplied with a 1m connecting cable, with RJ12 connector termination at each end.
It is typical in most installations that the current transformers are mounted on the left-hand side of the breaker so P1 is facing the correct way. However, it is also possible to mount the current transformer on the right-hand side with P2 facing the breaker. This is possible due to the meter having the option to reverse the flow to correct this type of application.