Eaton IZM6 Series Instruction Manual page 26

Section 5: IZM61/65/67 accessory installation
Figure 7. Step 4
Step 5: Mount the other one or two interlocks in the same man-
ner.
Section 3: Verifying the interlocking between cir-
cuit breakers
Interlocking between two circuit breakers:
A
Figure 8: Schematic diagram of two interlocking devices
Both circuit breakers are in the charged status:
• When Circuit Breaker A is closed, Circuit Breaker B cannot be
closed; Circuit breaker B can be closed after Circuit Breaker A
is opened.
• When Circuit Breaker B is closed, Circuit Breaker A cannot be
closed; Circuit breaker A can be closed after Circuit Breaker B
is closed.
Interlocking between two circuit breakers:
A
Figure 9: Schematic diagram of three interlocking devices
Three circuit breakers are in the charged status:
• When Circuit Breaker A and B are closed, Circuit Breaker C
cannot be closed; Circuit breaker C can be closed after Circuit
Breaker A or B is opened.
• When Circuit Breaker A and C are closed, Circuit Breaker B
cannot be closed; Circuit breaker B can be closed after Circuit
Breaker A or C is opened.
• When Circuit Breaker B and C are closed, Circuit Breaker A
cannot be closed; Circuit breaker A can be closed after Circuit
Breaker B or C is opened.
• Among Circuit Breaker A, B and C, only one or two circuit
breakers can be closed.
26 IZM6 Series Air Circuit Breaker Instruction Manual MN013019EN March 2023 www.eaton.com.cn
Screw M4×8
U1 U2
B
C
B
IZM65/67 shunt release
(1) Only qualified electrical personnel should be permitted to
work on the equipment.
(2) Always de-energize primary and secondary circuits if a circuit
breaker cannot be removed to a safe work location.
(3) Drawout circuit breakers should be levered (racked) out to the
disconnect position.
(4) All circuit breakers should be switched to the off position and
mechanism springs discharged.
Failure to follow these steps for all procedures described in this
instruction leafl et could result in death, bodily injury, or property
damage.
Section 1: General information
The shunt release opens the circuit breaker when energized.
Tools required
• Phillips screwdriver
Kit parts identification
• Shunt release (1)
• Screws M4×65 (2)
Section 2: Installing the shunt release
Follow below steps for installation:
Step 1: Remove the mounting screws from the circuit breaker
panel with the Phillips screwdriver. Pull down the charging handle
(by an approx. 45° angle) to remove the cover.
Figure 1. Step 1
WARNING
Screw