Schneider Electric Class 9422 Type CMP Cable Operating Mechanisms

Introduction

The Class 9422 Type CMP cable mechanism is designed for right-hand operation and is compatible with Square D™ PowerPacT™ M and P circuit breakers. It is also used with Class 9422 Type AP1, AP2, AP9, or AP10 operating handles. This document provides installation and adjustment guidance.

Safety Information

Operating Mechanism Diagram (Figure 1)

Figure 1 illustrates the operating mechanism. Key components include:

• Bail arm (B): Connects to the circuit breaker toggle.
• Bail arm screw (C): Secures the bail arm.
• Mechanical stop (E): Provides a resting point for the bail arm.
• Right/Left adjustment screw (F, G): Used for fine-tuning the mechanism's position.
• Push-to-trip button (H): Allows manual tripping of the breaker.
• Cable nuts (J): Secure the operating cable.
• Flange mechanism coupler (M): Connects the mechanism to the handle linkage.

Diagram shows the physical arrangement of the operating mechanism components.

Kit Contents (Table 1)

Installation Procedure

Follow these steps carefully for proper installation. Refer to relevant figures and tables for details.

1. Prepare Mechanism: With the mechanism bail arm (B) in the On position, remove the bail arm by taking out the four screws (C).
2. Install Liner: Slide the liner (4) into the mechanism, aligning it with the mounting holes.
3. Mount Circuit Breaker: With the circuit breaker toggle and the operating mechanism in the On position, slide the circuit breaker into the operating mechanism, aligning it with the four mounting holes.
4. Secure Circuit Breaker: Secure the circuit breaker to the mechanism using the four insulated mounting screws (3).
5. Adjust Trip Unit (If Applicable): For circuit breakers with an electronic trip unit, adjust the trip unit dials before installing the mechanism bail arm.
6. Adjust Bail Arm Assembly: Loosen the left screw (G) and remove the right screw (F) and washer from the adjustment plate on the bail arm assembly.
7. Position Bail Arm: Position the bail arm assembly so the circuit breaker toggle passes through the adjustment plate. Secure with the four screws (C) removed in Step 1.
8. Set Adjustment Plate: With the circuit breaker toggle in the On position, push the adjustment plate upwards until it contacts the circuit breaker toggle.
9. Verify Bail Arm Rest: Ensure the bail arm rests firmly against the mechanical stop (E) when the circuit breaker toggle is in the full On position.
10. Finalize Bail Arm Screws: Locate the appropriate mounting hole in the vertical sawtooth slot. Reinstall and tighten screws (F and G) and the washer loosened in Step 5. Torque these two screws to 70 lb-in (8 N•m).

Mounting the Mechanism to the Panel

Secure the operating mechanism assembly (1) to the circuit breaker mounting surface (N) using the four screws (2).

Mounting the Handle

1. Install the handle according to its instruction bulletin. Use the handle mechanism portion instead of the stiffener bracket supplied with the handle kit.
2. Place the operating handle in the On position. Connect the flange mechanism coupler (M) to the handle linkage using the two supplied bolts.

Adjustment Procedure

Follow these steps to adjust the mechanism for proper operation.

1. Place the handle in the On position. If the breaker does not reach the full On position:
   • Loosen the cable nuts (J) and adjust the cable forward (K) until the breaker moves to the full On position and the bail arm rests against the stop (E).
   • Torque the nuts to 100-120 lb-in (11.3–13.6 N•m).
2. Trip the breaker by pressing the push-to-trip button (H) with a small tool.
3. Reset the breaker by moving the operating handle to the Off position. A properly reset breaker will turn on with an audible snap.
4. If the breaker does not reset:
   • Place the handle in the On position.
   • Loosen the cable nuts (J) and adjust the cable rearward (L) slightly until the breaker resets.
   • Repeat as necessary until the breaker turns on and resets properly, and the handle operates the circuit breaker in both On and Off positions.
   • Torque the nuts to 100-120 lb-in (11.3–13.6 N•m).

Panel Drilling and Dimensions (Figure 3)

Figure 3 shows the recommended panel drilling dimensions in inches (mm). Key reference points for drilling and mounting include:

• A: Vertical center line for handle drilling.
• D: Distance from handle mounting surface to circuit breaker mounting surface (Min: 10.5 in. / 267 mm, Max: 18.9 in. / 480 mm).
• N: Circuit breaker mounting surface.
• P: Handle mounting surface.
• Q: Circuit breaker.
• R: Four 1/4-20 tap holes for mounting the mechanism frame.
• S: Four 0.31 in. (7.9 mm) clearance holes for #10 circuit breaker screws.
• T: Door.
• X: Wire bending space from the top of the circuit breaker to the interior wall or barrier.

Diagram provides precise measurements for panel preparation.

Cable Lengths by Type (Table 2)

Note: For circuit breakers with a trip unit adjust option, refer to page 2 for installation completion.

Final Installation Check

DANGER: After installation, verify that the door cannot be opened with the operating handle and circuit breaker in the On position. Failure to follow these instructions will result in death or serious injury. ⚡️