Section 1: General Information - Eaton 2C12891G21 Installation Instructions Manual

Instruction Leaflet IL2C13761H11
Effective March 2020

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" .
To remove the key, press the breaker "OFF" button, and rotate
N ote:
the key 90 degrees counterclockwise.
(A)
Not supplied
(Kirk–#KC4–10)
(E)
(D)
(H)
(L)
(Items O and P not always needed)
(P)
(O)
Figure 1. Contents of kit 2C12891G21
2
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(B)
(F)
(C)
(G)
(I)
(J)
(K)
(N)
(M)
(Q)
Installation instructions for Kirk
Key Interlock Kit (2C12891G21) in
Magnum low-voltage circuit breakers
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
•
Spring puller (such as Moody Tool item #6HAR6)
•
(Steps 1–5) can be pre-assembled if no portable Arbor press, bench vise, or equivalent is
a
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
a