# Siemens 3WA Air Circuit Breaker Accessory, 1st Alarm Switch with 1 CO Contact

**URL:** https://aio.lv/en/product--siemens-3wa9111-0ah02--12445827
**Data updated:** 2026-05-18 02:55 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** Siemens
**Manufacturer code:** 3WA9111-0AH02
**EAN:** 4001869579030
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 50.99 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 42.14 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3wa9111-0ah02--12445827

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3WA accessory is a high-quality alarm switch designed for 3WA air circuit breakers. This component features one CO (changeover) contact, providing reliable signaling for circuit breaker status monitoring. It is an essential part for industrial electrical distribution systems, ensuring precise control and safety. Engineered for seamless integration, this accessory enhances the operational monitoring capabilities of the 3WA series.

## Long description

The Siemens 3WA air circuit breaker accessory, specifically the 1st alarm switch with one CO contact, is a precision-engineered component designed to enhance the monitoring capabilities of the 3WA series air circuit breakers. This switch provides reliable status signaling, allowing operators to track the operational state of the circuit breaker within industrial electrical distribution systems. By integrating this accessory, users ensure that critical status information is captured accurately, contributing to the overall safety and efficiency of the electrical infrastructure.
Advantages
This alarm switch offers seamless integration with the Siemens 3WA series, ensuring that installation is straightforward and compatible with existing system architectures. The inclusion of a changeover contact provides versatile signaling options, allowing for flexible configuration in various monitoring setups. Its robust construction ensures long-term reliability in demanding industrial environments, minimizing the need for frequent maintenance and supporting consistent performance in power distribution applications.
Suitable for
Industrial electrical distribution systems
Status monitoring of air circuit breakers
Automated power management setups
Safety-critical electrical installations
When it may not be suitable
This component is specifically designed for use with the Siemens 3WA series of air circuit breakers and is not compatible with other circuit breaker models or brands. It should not be used in applications that fall outside the specified technical parameters for voltage and current handling.
Key specifications
Component type: 1st alarm switch
Contact configuration: 1 CO (changeover) contact
Compatibility: Siemens 3WA air circuit breakers
How to use
The alarm switch should be installed by a qualified electrician in accordance with the technical documentation provided with the Siemens 3WA air circuit breaker. Ensure the power is disconnected from the main circuit breaker before attempting to install or replace the accessory. The switch is mounted into the designated slot within the circuit breaker housing, and the electrical connections are made to the corresponding terminals to enable status signaling.
What to consider before purchase
Verify compatibility with your specific 3WA circuit breaker model
Ensure the installation environment meets the required safety standards
Confirm that the electrical load requirements match the switch specifications
Usage recommendations
Regularly test the alarm switch functionality during scheduled maintenance intervals to ensure that the status signaling remains accurate and responsive.

## FAQ

### How much does the Siemens 3WA Alarm Switch Accessory 3WA9111-0AH02 cost, and is it available for purchase?

The price is 50.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 16.07.2026 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

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