# Schneider Electric CA4KN40BW3 Auxiliary Contact Block, 4NO, 24V DC

**URL:** https://aio.lv/en/product--schneider-electric-ca4kn40bw3--12473484
**Data updated:** 2026-05-18 09:39 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** Schneider Electric
**Manufacturer code:** CA4KN40BW3
**EAN:** 3389110485813
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Schneider Electric CA4KN40BW3 is an auxiliary contact block designed for reliable switching in industrial control systems. It features 4 normally open (NO) contacts and operates on 24V DC. With a rated insulation voltage of 690V and an operating temperature range of -25 to 50 °C, this component ensures stable performance in demanding environments. It is an essential accessory for contactors, providing seamless integration and control.

## Long description

The Schneider Electric CA4KN40BW3 auxiliary contact block is a high-quality component engineered for precise switching operations within industrial control systems. Featuring four normally open (NO) contacts, this block is designed to expand the functionality of contactors, ensuring reliable signal transmission and circuit control. It operates on a 24V DC supply, making it suitable for standard low-voltage automation setups where consistent performance is required.
Advantages
This auxiliary contact block offers exceptional durability and reliability in demanding industrial environments. Its robust construction allows it to maintain stable operation across a wide temperature range, ensuring that control signals remain accurate even under fluctuating conditions. The compact design facilitates easy integration into existing control panels, saving valuable space while providing the necessary electrical connectivity for complex automation tasks.
Suitable for
Industrial automation control systems
Motor control and protection circuits
Signal feedback loops in electrical panels
Integration with compatible contactors
This component may not be suitable for applications requiring high-current power switching, as it is designed specifically for control and signaling purposes. It is also not intended for use in environments exceeding the specified temperature limits or in systems requiring different contact configurations, such as normally closed (NC) contacts.
Key specifications
Contact configuration: 4 normally open (NO)
Operating voltage: 24V DC
Rated insulation voltage: 690V
Operating temperature range: -25 to 50 °C
Storage temperature range: -50 to 80 °C
Dimensions: 45 mm width, 57 mm depth, 58 mm height
How to use
The auxiliary contact block is designed for simple mechanical mounting onto compatible contactors. Ensure the power supply is disconnected before installation. Align the block with the mounting interface of the contactor and secure it firmly according to the manufacturer's guidelines. Once installed, connect the control wiring to the designated terminals, ensuring that the voltage matches the 24V DC specification. Verify all connections are tight and secure before restoring power to the system.
What to consider before purchase
Verify compatibility with your existing contactor model
Ensure the 24V DC control voltage matches your system requirements
Check that the 4NO contact configuration meets your circuit design needs
Confirm the operating environment falls within the -25 to 50 °C range
Usage recommendations
Regularly inspect the terminal connections for tightness and ensure the unit remains free of dust or moisture accumulation to maintain optimal performance over the long term.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.235 kg |
| Storage temperature (T-T) | -50 - 80 |
| Package weight | 219 g |
| Operating temperature (T-T) | -25 - 50 |
| Height | 58 mm |
| Width | 45 mm |
| Depth | 57 mm |
| Package depth | 62 mm |
| Package height | 48 mm |
| Package width | 65 mm |
| Maximum operating altitude | 2000 m |
| Rated insulation voltage | 690 V |
| Warranty period | 1.5 year(s) |
| Mechanical durability (cycles) | 30000000 |

## FAQ

### What payment options are available?

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### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Schneider Electric products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Schneider Electric service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Schneider Electric CA4KN40BW3 Auxiliary Contact Block?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

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