50 IZM32 / IN32 low voltage air circuit breaker MN013017EN May 2022 www.eaton.com
Section 6: Wiring diagrams
Zone interlock wiring
24
23
21
PXR
24
23
21
PXR
24
23
21
PXR
24
23
21
PXR
IZM series circuit breaker
IZM series circuit breaker
IZM series circuit breaker
IZM series circuit breaker
Zone 1
Zone 2
Zone 3
Zone 3
Notes:
1. Twisted together AWG #14 to #20 copper wire. Route the Zone Interlock wiring
separate from power conductors. DO NOT GROUND any Zone Interlock wiring.
2. The maximum distance between two farthest breakers on different zones (from the
Z
out
downstream to the Z
in
upstream terminals) is 250 feet (75 m).
3. A maximum of 20 breakers may be contained in parallel in one zone.
4. Provide a self interlocking jumper (on Zone 3), if coordination is desired with other
downstream breakers not providing the Zone Interlock feature.
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