94
New generation IZM97, 99 low voltage air circuit breaker instruction manual
MN013010EN February 2020 www.eaton.com.cn
Section 7: Wiring diagrams
Maintenance mode wiring
IZM series circuit breaker
Arm
Switch
Monitored
Voltage
Arm
Switch
Remote Indicotor
(Blue Light)
Trip unit control power suply
24VDC ±10%
Monitored
Voltage
IIZM series circuit breaker
13
1
9
2
2
22
14
2
0
20
Notes:
1. PXR20/25 can locally be placed in Maintenance Mode via a two position switch located on the trip unit. The function can be a
rmed via a remote switch as shown.
In addition, the function can be activated via communication modules. A blue LED on the PXR verifies the PXR release in Mainten
ance Mode.
2. The recommended selector switch for this low voltage application is Eaton part number 10250T133-2E which includes a contact
block rated for logic level and
corrosive use.
3. The maximum length of this wiring to remotely arm the switch (or alternate relay contact) is
9.78 feet (3 m). Use #20 AWG wire or larger.
4. A remote Stack Light Annunciator panel or other remote indication device can be connected to verify that PXR is in the Maint
enance Mode.
5. The relay in the PXR release makes when in Maintenance Mode.
C
ontact is rated 1 A @ 120 Vac, 1 A @ 24 Vdc, and 0.5 A @ 230 Vac.
6. The PXR release can also be placed remotely in its Maintenance Mode via a general purpose relay (ice cube type with logic le
vel contacts) and activated by a
remote control switch. A recommended type is IDE
C
Relay RY22.
C
hoose the voltage as desired.
7. If a
C
ommunication Module is used, The
C
ommunication Module will require 24 Vdc power and will provide isolated
power to the PXR release in the circuit breaker. If a
C
ommunication Module is not used, the PXR release that requires auxiliary voltage for alarms which should
be fed from a galvanically isolated, 24 Vdc supply.
Alternate Customer
Wiring (par
tial)
Maintenance Mode
Wiring
