# Phoenix Contact REL-MR-BL- 12DC/21-21 Miniature Relay, 2-Pole, 8A, 12V DC, AgNi Contacts

**URL:** https://aio.lv/en/product--phoenix-contact-1109543--12463443
**Data updated:** 2026-05-18 09:43 (EEST)
**Category:** Server Parts & Components
**Manufacturer:** PHOENIX-CONTACT
**Manufacturer code:** 1109543
**EAN:** 4063151018696
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 7.49 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 6.19 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--phoenix-contact-1109543--12463443

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The Phoenix Contact REL-MR-BL- 12DC/21-21 is a high-quality miniature relay designed for industrial control applications. It features a 2-pole configuration with a switching current of 8A and a 12V DC coil voltage. Equipped with reliable AgNi contacts, this relay is optimized for use with ECOR-1 sockets, ensuring secure electrical connections and efficient performance in automation systems.

## Long description

The Phoenix Contact REL-MR-BL- 12DC/21-21 is a high-performance miniature relay engineered for demanding industrial control and automation environments. This 2-pole component is designed to provide reliable switching operations in compact spaces, featuring a 12V DC coil voltage and a robust 8A switching current capacity. Utilizing high-quality AgNi contacts, it ensures consistent electrical conductivity and long-term operational stability for various control circuits.
Advantages
This miniature relay offers exceptional reliability due to its high-quality construction and specialized contact material. The AgNi contacts are specifically chosen for their excellent resistance to material transfer and welding, which extends the service life of the relay even under frequent switching cycles. Its compact design allows for high-density mounting in control cabinets, while the compatibility with ECOR-1 sockets facilitates quick installation and simplified maintenance procedures within complex automation systems.
Suitable for
Industrial automation and control systems
Signal switching in control panels
Interface modules for PLC outputs
General purpose electrical switching applications
When it may not be suitable
This relay is not intended for high-power switching applications exceeding its 8A current rating or for environments requiring specific hazardous area certifications not covered by its standard specifications. It is also not suitable for direct AC coil operation without an appropriate power supply conversion.
Key specifications
Coil voltage: 12V DC
Contact configuration: 2-pole (DPDT)
Maximum switching current: 8A
Contact material: AgNi
Socket compatibility: ECOR-1
How to use
To use the relay, insert it firmly into a compatible ECOR-1 socket, ensuring the pins are correctly aligned with the socket terminals. Once seated, connect the control circuit to the coil terminals and the load circuit to the corresponding contact terminals. Ensure that the supply voltage matches the 12V DC rating to prevent damage to the coil. Periodically inspect the relay and socket connections to ensure they remain secure and free from oxidation or debris.
What to consider before purchase
Verify that your control system provides a stable 12V DC supply.
Ensure the load requirements do not exceed the 8A limit.
Confirm that you have the correct ECOR-1 socket for mounting.
Check the physical space constraints in your control cabinet.
Usage recommendations
For optimal performance and longevity, ensure the relay is installed in an environment free from excessive vibration and extreme temperatures. Always use the recommended socket to maintain the integrity of the electrical connection and to facilitate easy replacement during routine maintenance.

## FAQ

### How much does the Phoenix Contact REL-MR-BL- 12DC/21-21 Miniature Relay cost, and is it available for purchase?

The price is 7.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 15 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 07.07.2026 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 PHOENIX-CONTACT 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 PHOENIX-CONTACT 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

https://aio.lv/img/cache/product/12463443/68765183_large.webp