Brand: GE
Category: Other
Document Type: Manual
Language: EN
Manual for SBM
Uploaded: Nov. 21, 2025, 6:26 p.m.
Warranty Information
Refer to General Electric Company for specific warranty information.
The Type SBM switches are cam-operated rotary switches used for controlling electrical devices like circuit breakers and motors, or for transferring meters and relays. Rotation of the shaft opens or closes contacts based on cam settings. Each stage has two mechanically and electrically separate contacts. Momentary contact versions have a torsion spring for returning to a neutral position, and can feature slip contacts or locking devices. Add-a-stage capability allows for expanded contact configurations.
Troubleshooting and error codes
| Problem | Cause | Remedy |
|---|---|---|
| Switch contacts do not operate properly. | Loose mounting screws. | Tighten mounting screws. |
| Switch does not return to neutral (momentary type). | Torsion spring issue or locking device engaged. | Inspect and adjust or release torsion spring/locking device. |
| Contacts are pitted or coated with sulphide. | Normal wear or environmental factors. | Clean contacts with a flexible burnishing tool. |