Figure 5: P15D Rear view-Terminal Connection
Terminal Blocks
CT/Auxiliary power/Input/ Output connections
The P50 Agile devices use terminal blocks as shown below. The terminal block consists of up to 9 x
M5 screw terminals and 20 x M4 screw terminals. M5 terminal blocks are used for CT connections and
M4 terminal blocks are used for auxiliary power/ input/output connections. The wires should be
terminated with rings using 90° ring terminals, with no more than two rings per terminal. The product is
supplied with sufficient M5 & M4 screws for proper connection.
M4 Terminal block M5 Terminal block
Figure 6: Terminal blocks
Caution: Always fit an insulating sleeve over the ring terminal.
Rear Serial Port connection
The rear serial port is intended for use with a permanently wired connection to a remote SCADA
system. The physical connectivity is achieved using three screw terminals: C3, C4 terminals for signal
connection, and C5 terminal for connecting cable shield. The terminal block is located at the rear of
the relay as shown below.
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