How should you choose between the K2CA-DO Over-Current Relay and K2CA-DO3 Over-Current Relay ?
Select the model according to the Breaker's trip method.
K2CA-DO-: Current transformer secondary current tripping
K2CA-DO3-: Voltage, no-voltage, DC tripping
Note:The box " " in the model number is for the case code. The following three types are available.
D2: Square embedded pull-out type
F4: Compact square embedded type
R2: Compact round embedded type
The appearance of each type is shown below.