# Schneider Electric CA3KN31MD Auxiliary Contact Block, 3 NO + 1 NC, 220V DC Control Coil

**URL:** https://aio.lv/en/product--schneider-electric-ca3kn31md--12458503
**Data updated:** 2026-05-18 09:35 (EEST)
**Category:** Computer Component Accessories
**Manufacturer:** Schneider Electric
**Manufacturer code:** CA3KN31MD
**EAN:** 3389110484366
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 19.41 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--schneider-electric-ca3kn31md--12458503

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Schneider Electric CA3KN31MD is a reliable auxiliary contact block designed for industrial control systems. It features a configuration of 3 normally open (NO) and 1 normally closed (NC) contacts, powered by a 220V DC control coil. This component is essential for expanding the switching capabilities of contactors in automation and electrical distribution applications, ensuring precise control and signal feedback in various industrial environments.

## Long description

The Schneider Electric CA3KN31MD is a high-performance auxiliary contact block engineered for demanding industrial control systems. This component is specifically designed to integrate seamlessly with contactors, providing additional switching capacity for automation, signaling, and electrical distribution tasks. Featuring a robust 220V DC control coil and a versatile contact configuration of 3 normally open (NO) and 1 normally closed (NC) contacts, it ensures reliable operation and precise signal feedback in complex electrical circuits.
Advantages
This auxiliary contact block offers exceptional reliability and durability, making it a preferred choice for industrial environments where consistent performance is critical. Its compact design allows for efficient use of space within control panels, while the standardized contact configuration simplifies integration into existing automation setups. The high-quality construction ensures long-term operational stability, reducing the need for frequent maintenance and minimizing downtime in critical electrical systems.
Suitable for
Industrial automation and control systems
Electrical distribution panels
Signal feedback and monitoring circuits
Expanding contactor switching capabilities
When it may not be suitable
This device is designed specifically for 220V DC control voltage applications. It is not suitable for use in systems requiring AC control voltages or different DC voltage levels, as this may lead to operational failure or damage to the coil.
Key specifications
Contact configuration: 3 NO + 1 NC
Control coil voltage: 220V DC
Width: 45 mm
Depth: 57 mm
Height: 58 mm
Color: Black and White
How to use
The auxiliary contact block is designed for easy mounting onto compatible contactors. Before installation, ensure that the power supply is disconnected to prevent electrical hazards. Align the block with the mounting interface of the contactor and secure it firmly according to the manufacturer's guidelines. Connect the control wiring to the designated terminals, ensuring that the voltage matches the 220V DC specification of the coil. Once installed, verify the operation of the contacts during a test cycle to ensure correct signal switching.
What to consider before purchase
Verify that your control system operates on 220V DC.
Check the physical dimensions to ensure compatibility with your existing panel space.
Confirm that the 3 NO + 1 NC configuration meets your specific circuit requirements.
Usage recommendations: Always perform a thorough inspection of all electrical connections after installation. Ensure that the control circuit is properly protected by fuses or circuit breakers to prevent damage from overcurrent or short circuits.

## Specifications

| Feature | Value |
|---|---|
| Height | 58 mm |
| Width | 45 mm |
| Depth | 57 mm |
| Product colour | Black, White |

## FAQ

### How much does the Schneider Electric CA3KN31MD Auxiliary Contact cost, and is it available for purchase?

The price is 23.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### 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

## Image

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