ABB Auxiliary Contact Block - A series - CA4-10
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Tameson UKAbb A Series Auxiliary Contact Block - 1Sbn010110r1010
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Product Information
Full details
The ABB A series Auxiliary Contact Block (CA4-10) is designed for industrial control applications, providing reliable supplementary contact for switch and automatic switch series. Its key benefit is extending the functionality of compatible contactors and relays with an easily attachable, front-fastening 1 normally open (NO) contact. A caveat to consider is its specific compatibility with ABB AF09 to AF38 series devices and its AC-15 rated current limit.
All features
| Series | A |
|---|---|
| Model Part Number | CA4-10 |
| Brand | ABB |
Extended Product Information
FAQs
What does '1 NO' mean?
'1 NO' means the contact block has one 'Normally Open' contact. This contact is open (not conducting) when the main contactor is de-energized and closes (conducts) when the main contactor is energized.
Can this be used with DC circuits?
The CA4-10 is rated for AC-15 control circuits. It is not designed or rated for DC applications.
What is the maximum current rating?
The rated operating current (Ie) at AC-15 is 4A.
Can I add more contacts to this unit?
This specific model, CA4-10, is a single-contact block. For additional contacts, you would need to consider a different auxiliary contact block or a different main contactor that supports more auxiliary contacts.
How do I know if my contactor is compatible?
This block is compatible with ABB A series switch and automatic switch series AF09 to AF38.
What is 'forcible switching'?
Forcible switching indicates that the auxiliary contact's state is mechanically forced to change when the main device operates, ensuring reliability even if there are slight imperfections in the contacts.
Troubleshooting
Contact not switching state
Verify the main contactor/switch is properly operating. Ensure the CA4-10 is correctly attached and seated. Check wiring connections to the screw terminals.
Unit does not attach to contactor
Confirm you are using a compatible ABB AF09 to AF38 series contactor or automatic switch. Ensure no obstructions are preventing proper alignment.
Overheating or burning smell
Immediately de-energize the circuit. Check if the connected load exceeds the 4A AC-15 rating. Verify wiring is correct and terminals are tight.
Pros and Cons
Pros
- Easy to install on compatible ABB devices.
- Adds essential signaling capability with a normally open contact.
- Robust screw terminal connections for secure wiring.
- Designed for reliable operation with forcible switching.
- Compact design suitable for front mounting.
Cons
- Limited to 1 NO contact, no NC contact available on this model.
- Specific compatibility required with ABB AF09-AF38 series.
- Rated for AC-15 control circuits only.
- Requires compatible main contactor or relay for operation.
Setup, Compatibility & Care
Setup:
- Ensure the main contactor or automatic switch (ABB AF09 to AF38 series) is de-energized and safe to work with.
- Align the CA4-10 block with the designated mounting points on the front of the compatible ABB device.
- Push the block firmly until it clicks into place, ensuring a secure fit.
- Connect wires to the screw terminals according to your circuit diagram for the normally open (NO) contact.
Compatibility:
- This auxiliary contact block is designed exclusively for ABB A series contactors and automatic switches from AF09 to AF38.
- It is not compatible with other brands or different series of ABB devices.
Care:
- Keep the contact block clean and free from dust and debris. Use a dry cloth for cleaning.
- Periodically check the screw terminals for tightness to ensure reliable electrical connections.
- Avoid exposing the unit to excessive moisture or corrosive environments.