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Door Mounted
Operating Mechanisms for Circuit Breakers
Class 9421 / Refer to Catalog 9420CT9701
Type L Circuit Breaker Mechanisms
9421 Type L
Circuit Breaker Operating Mechanism
Type L door-mounted, variable depth operating mechanisms feature heavy duty, all
metal construction with trip indication. All mechanisms can be padlocked in the Off
position when the enclosure door is open. Further, the handle assemblies can be locked
Off with up to three padlocks, which also locks the enclosure when the door is closed.
(The 3 in. handle accepts one padlock.) Complete kits are rated for NEMA 1, 3R, and 12
enclosures. They include a handle assembly, operating mechanism, and shaft assembly.
Table 8.89: Complete Kits
Complete Kit
Does Not Include Circuit Breaker
Includes Operating Mechanism and Handle
Use With
Standard 6 in. Handle Short 3 in. Handle
Standard Shaft Kit
Long Shaft Kit Long Shaft Kit
Circuit Breaker or
Interrupter Type
No.
of
Poles
Frame
Size
(A)
Cat. No.
Mounting
Depth [1]
Cat. No.
Mounting
Depth [1]
Cat. No.
Mounting
Depth [1]
PowerPact
™
B 2–3 125 9421LB1
5.50–
10.75
9421LB4
5.50–
21.38
9421LB3
5.50–
21.38
PowerPact H and J 2–3 250 9421LJ1
5.50–
10.75
9421LJ4
5.50–
21.38
9421LJ3
5.50–
21.38
PowerPact L 2–3 600 9421LD1
7.25–
12.06
9421LD4
7.25–
22.63
3 in. handles are not
recommended for use
with these circuit
breakers.
PowerPact M and P
[2]
3 1200
9421LW1
[3]
9.00–
12.50
9421LW4
[3]
9.00–
23.50
Table 8.90: Component Parts
Use With
3 in. Handle
Assemblies
NEMA 1, 3R, 12
Standard Handle
Assemblies
NEMA 1, 3R, 12
Operating
Mechansm
Includes Lockout
Standard Shaft
(Support Bracket Not Required)
Long Shaft
(Support Bracket Required)
Circuit Breaker or
Interrupter Type
No. of
Poles
Frame
Size (A)
Cat. No. Cat. No. Cat. No.
Mounting
Depth [1]
Cat. No.
Mounting
Depth [1]
Cat. No.
PowerPact B 2–3 125
9421LH3 [4] 9421LH6 [4]
9421LB7 5.50–10.75 9421LS8 5.50–21.38 9421LS13
PowerPact H & J 2–3 250
9421LH3 [4] 9421LH6 [4]
9421LJ7 5.50–10.25 9421LS8 5.50–21.38 9421LS13
PowerPact D & L
2–3 600
[5] 9421LH6 [4]
9421LD7 7.25–12.06 9421LS8 7.25–22.63 9421LS13
4
1200
(300 V)
—
9421LH6 [4]
9421LD14 7.25–12.06 9421LS8 — —
9421LH6 [4]
9421LD44 — — 7.25–22.63 9421LS13
— 9421LD74 — — — —
PowerPact M & P [2]
3 1200
[5] 9421LHP8 [4]
9421LW7 7.19–11.63 9421LS8 7.19–22.25 9421LS10
Table 8.91: NEMA 4 and 4X Handle Assemblies
Use With Standard Handle Assemblies
Special 3 in. Version
Circuit Breaker or
Interrupter Type
No. of
Poles
Frame
Size (A)
NEMA 1, 3R, 4, 12
(Painted)
NEMA 1, 3R, 4, 4X, 12
(Chrome Plated)
NEMA 1, 3R, 4, 12
(Painted)
NEMA 1, 3R, 4, 4X, 12
(Chrome Plated)
Cat. No. Cat. No. Cat. No. Cat. No.
PowerPact B 2–3 125 9421LH46 9421LC46 9421LH43 9421LC43
PowerPact H and J; NSF
2–3 250 9421LH46 9421LC46 9421LH43 9421LC43
PowerPact D and L 2–3 600 9421LH46 9421LC46
3 in. handles are not recommended for use with these circuit
breakers.
PowerPact M and P 3 1200 9421LHP48 9421LCP48
3 in. Handle Assembly
Standard Handle Assembly
Handle Mechanisms
Table 8.92: Auxiliary and Alarm Switches for PowerPact
TM
Circuit Breakers
Description
B-Frame H- and J-Frame D- and L-Frame D- and L-Frame
1 Auxiliary Switch 1a 1b
LV26950 S29450 S29450 S29450
2 Auxiliary Switch 2a 2b
— 2 x S29450 2 x S29450 2 x S29450
3 Auxiliary Switch 3a 3b
— — 3 x S29450 3 x S29450
NOTE: The location of the accessory in the circuit breaker determines its function.
8
OPERATING MECHANISMS AND
DISCONNECT SWITCHES
[1] Mounting depth measured in inches from circuit breaker mounting surface (control panel) to outside of enclosure door.
[2] These circuit breaker operating mechanisms must use the 9421LHP•• or LCP•• handles only.
[3] Type LW1 and LW4 include an 8 in. handle (9421LHP8) rather than a 6 in. handle.
[4] For a red handle and yellow bezel, add suffix RY to catalog number, e.g., 9421LH6RY.
[5] 3 in. handles are not recommended for use with these circuit breakers.