How CA3KN22BD fits a 24 V DC auxiliary-control circuit
Schneider Electric CA3KN22BD is an auxiliary control relay, not a power contactor for direct motor switching. Its four control contacts provide 2NO and 2NC functions with a 24 V DC coil. The shared motor-control image represents the category and should not be used to identify the exact terminal layout of CA3KN22BD.
Technical specification and selection data
| Technical item | Verified value / selection note |
|---|---|
| Exact reference | CA3KN22BD |
| Range | TeSys K control relay |
| Contacts | 2 normally open + 2 normally closed |
| Control coil | 24 V DC |
| Connection | Screw-clamp terminals |
| Maximum stated circuit voltage | Up to 690 V, subject to applicable use category |
Contact logic first
Before using CA3KN22BD in a panel, map each normally open and normally closed contact to the original schematic. Contact numbering, auxiliary interlocks and the control voltage are more important than visual similarity. Test the machine sequence after any relay change.
Coil and interface
Check that the control output can energize the CA3KN22BD 24 V DC coil and that suppression and polarity arrangements agree with the installed circuit. A near-identical CA3KN designation may have a different coil voltage or contact mix. Confirm the label and current manufacturer's connection diagram.
Maintenance decision
Inspect terminal tightness, mechanical mounting, environmental exposure and signs of contact wear. When CA3KN22BD is a spare for an existing panel, record the original wiring and functional test before removal. Do not assume that an apparently unused contact can be repurposed without reviewing the control design.
Similar-looking Schneider references
The following codes resemble CA3KN22BD in naming or appearance. Ratings, functions and connection details can differ; they are comparison references, not guaranteed substitutes for CA3KN22BD.
CA3KN22BD3, CA3KN22FD, CA3KN22MD, CA3KN22UD, CA3KN31BD3, CA3KN40BD3, CA3KN31MD
Before placing an order
Quote CA3KN22BD with the required 2NO+2NC composition, 24 V DC coil and terminal type. Ask for exact-code confirmation if another TeSys K relay is offered in place of CA3KN22BD.
For CA3KN22BD, confirm the printed designation, current Schneider Electric documentation, installation conditions and any lifecycle notice before purchase or commissioning.
Additional Schneider CA3 visually similar model codes
These ordering strings are grouped because their printed model codes look similar. They may represent different product types, functions, ratings, accessories or approvals. This list is not an interchangeability claim; verify the exact manufacturer data before ordering.
- CA3 KN40BD
- CA3SK11BD
- CA3SK20BD
