
47
IZM63 / IN63 low voltage air circuit breaker
MN013014EN May 2021 www.eaton.com.cn
Section 6: 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
19
22
22
14
20
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 Maintena
nce 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 63.78 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. Contact 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 IDEC Relay RY22. Choose the voltage as desired.
7. If a Communication Module is used, The Communication Module will require 24 Vdc power and will provide isolated
power to the PXR release in the circuit breaker. If a Communication 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
(pa
rtial)
Maintenance
Mode
Wiring