Eaton 2C12891G21 - Section 1: General Information

2
Instruction Leaet IL2C13761H11
Effective March 2020
Installation instructions for Kirk
Key Interlock Kit (2C12891G21) in
Magnum low-voltage circuit breakers
EATON www.eaton.com
Section 1: General information
This key interlock provides the following safety features:
1. With no key, the breaker is “OPEN” and cannot close.
2. With the key “ON”, the breaker is fully functional.
3. The key cannot be removed when the breaker is “ON”. The key
cannot turn the breaker “OFF”.
ote: N To remove the key, press the breaker “OFF” button, and rotate
the key 90 degrees counterclockwise.
(B)
(A)
(E)
(G)
(F)
(H)
(C)
(D)
(K)
(J)
(N)
(M)
(I)
(L)
(Q)
(O)
Not supplied
(Kirk–#KC4–10)
(Items O and P not always needed)
(P)
Figure 1. Contents of kit 2C12891G21
Required tools
•
1/4 inch socket drive
•
10 mm socket
•
#2 Phillips head screwdriver
•
1 7/16 inch (36 mm) hole saw
•
3/32 hex key
•
9/64 hex key
•
Needle nose pliers
•
Arbor press, bench vise, or equivalent
a
•
Spring puller (such as Moody Tool item #6HAR6)
a
(Steps 1–5) can be pre-assembled if no portable Arbor press, bench vise, or equivalent is
available on job site.
Kit parts identification
Refer to Figure 1 for visual identification of the parts listed below:
(A) Kirk
®
Key Lock #KC40.10 (Kirk key lock not supplied).
(See your local Kirk Key Interlock company for distribution.)
(B) Bushing
(C) Kirk lock mounting plate
(D) Torsion spring
(E) Guide pin
(F) Cylinder interlock adapter
(G) Hex standoff
(H) 1/2 inch cap screw
(I) Interlock cable
(J) Shoulder screw 1/8 inch
(K) #3–48 x 3/8 flathead screw (2)
(L) Interlock arm assembly
(M) #5–40 x 0.25 inch machine screw (3)
(N) Extension spring (2, 1 spare)
(O) D-latch trip lever (NOT ALWAYS NEEDED)
(P) E-clip (NOT ALWAYS NEEDED)
(Q) M3.5 x 10 tapping screw