Trip Units — MicroVersaTrip PM™
23
+24 Vdc Input
MicroVersaTrip PM™ trip units require an external +24 Vdc
auxiliary power supply to furnish power to the communica-
tion network. In addition, this power supply energizes the
LCD display, so that low current values, voltage values and
trip targets are displayed without use of the internal batter-
ies. However, batteries are supplied with MicroVersaTrip
PM trip units for cold set-ups and viewing targets in the
event the +24 Vdc power supply is interrupted. A single +24
Vdc power supply can supply the power requirements of up
to 30 MicroVersaTrip PM trip units.
This power supply may also be used with MicroVersaTrip
Plus trip units. This allows low current values and trip tar-
gets to be displayed without the use of the trip unit internal
batteries, similar to the operation of the MicroVersaTrip PM
trip unit.
Communications Output
The communications network uses a pair of shielded,
twisted wires to connect individual devices to the POWER
LEADER™ system. All communication network wiring
within the breaker is prewired to dedicated secondary
terminals.