Door Mounted

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.

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

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

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

Auxiliary and Alarm Switches for PowerPactTM 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.

Dimensions for Type L Operating Mechanisms

Panel Drilling for PowerPactTM H and J Circuit Breaker

Operating Mechanisms: 9421LJ1, 9421LJ4, and 9421LJ7

Panel Drilling for PowerPactTM D and L Circuit Breaker

Operating Mechanisms: 9421LD1, 9421LD4, and 9421LD7

Panel Drilling for PowerPactTM M and P Circuit Breaker

Operating Mechanisms: 9421LW1, 9421LW4, and 9421LW7

Shaft Cutting Dimensions

Class

Type

Shaft Length Formula

H = Standard Shaft

H = Long Shaft

Min.

Max.

Min.

Max.

9421

LJ1, LJ4, LJ7

L = H – 3.00 (76)

5.5
(138)

10.75
(273)

5.5
(138)

21.63
(543)

9421

LD1, LD4, LD7

L = H – 4.25 (108)

7.25
(184)

12.06
(306)

7.25
(184)

22.63
(575)

9421

LW1, LW4, LW7

L = H – 4.89 (124)

7.19
(183)

11.63
(295)

7.19
(183)

22.25
(565)

Footnotes

  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.

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