# Siemens 3RT1966-4EA1 3-Pole Terminal Cover for S10 and S12 Contactors

**URL:** https://aio.lv/en/product--siemens-3rt1966-4ea1--12460739
**Data updated:** 2026-05-18 09:31 (EEST)
**Category:** Home Appliance Accessories
**Manufacturer:** Siemens
**Manufacturer code:** 3RT1966-4EA1
**EAN:** 4011209506084
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 28.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 23.96 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rt1966-4ea1--12460739

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3RT1966-4EA1 is a 3-pole terminal cover designed for use with S10 and S12 size contactors. This accessory provides enhanced protection for electrical connections, ensuring safety and preventing accidental contact with live parts. It is a reliable component for industrial electrical installations, offering a precise fit and durable construction to maintain system integrity in demanding environments.

## Long description

The Siemens 3RT1966-4EA1 is a high-quality 3-pole terminal cover specifically engineered for use with S10 and S12 size contactors. This essential accessory is designed to provide robust protection for electrical connections, effectively shielding live parts and preventing accidental contact during operation. As part of the SIRIUS modular system, it ensures seamless integration with compatible contactors, overload relays, and soft starters, maintaining the highest standards of safety and reliability in industrial electrical installations.
Advantages
This terminal cover offers superior protection by enclosing busbar connections or box terminals, which significantly reduces the risk of electrical hazards in the workplace. Its durable construction is built to withstand the rigors of demanding industrial environments, ensuring long-term system integrity. The design allows for a precise fit, which simplifies the installation process and ensures that the protective barrier remains securely in place during operation. By utilizing this component, users can easily comply with safety regulations regarding exposed electrical terminals.
Suitable for
S10 and S12 size contactors
3RT1 contactors
3RB2 overload relays
3RW4 and 3RW507 soft starters
Industrial control panels and switchgear assemblies
When it may not be suitable
This terminal cover is specifically dimensioned for S10 and S12 frame sizes. It is not compatible with smaller or larger contactor frame sizes and should not be forced onto incompatible equipment.
Key specifications
Number of poles: 3
Compatible frame sizes: S10 and S12
Application: Busbar connections or box terminals
System compatibility: SIRIUS modular system
How to use
To install the terminal cover, ensure that the power supply to the contactor is completely disconnected and locked out. Align the cover with the terminal area of the S10 or S12 contactor. Press the cover firmly into position until it snaps securely onto the housing, ensuring that all live terminals are fully enclosed. Verify that the cover is stable and does not obstruct any other control wiring or auxiliary components before restoring power to the system.
What to consider before purchase
Verify the frame size of your existing contactor (must be S10 or S12).
Check the compatibility with your specific series (3RT1, 3RB2, 3RW4, or 3RW507).
Ensure sufficient physical space in your control cabinet for the added dimensions of the cover.
Usage recommendations
Always perform a visual inspection of the terminal cover during routine maintenance to ensure it remains free of cracks or damage, and replace it immediately if the structural integrity is compromised to maintain optimal safety levels.

## FAQ

### How much does the Siemens 3RT1966-4EA1 Terminal Cover for S10/S12 Contactors cost, and is it available for purchase?

The price is 28.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 08.07.2026 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 Siemens 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 Siemens 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/12460739/68795316_large.webp