48 IZM32 / IN32 low voltage air circuit breaker MN013017EN May 2022 www.eaton.com
Section 6: Wiring diagrams
Maintenance mode wiring
IZM series circuit breaker
Arm
Switch
Monitored
Voltage
Arm
Switch
(Blue Light)
Trip unit control power suply
24VDC
±10%
IZM 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 armed via a remote switch as shown.
In addition, the function can be activated via communication modules. A blue LED on the PXR veries the PXR release in Maintenance 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 Maintenance 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 level 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 (partial)
Maintenance Mode Wiring
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