# Circuit breaker accessory Siemens 5ST3653 — auxiliary contact module for compatible breakers

**URL:** https://aio.lv/en/product--siemens-5st3653--10655010
**Data updated:** 2026-03-27 13:54 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** Siemens
**Manufacturer code:** 5ST3653
**EAN:** 4001869318622
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.49 €
**Prices and availability valid until:** 2026-08-14 23:59
**Price without VAT (21%):** 29.33 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-5st3653--10655010

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 12.08.2026 | free |
| Pickup points | 17.08.2026 | 1.89 EUR |
| Courier delivery to door | 17.08.2026 | 4.99 EUR |

## Summary description

Siemens 5ST3653 is a circuit breaker accessory designed as an auxiliary contact module to work with compatible Siemens miniature and molded-case breakers. It provides additional signaling or control contacts for remote monitoring and interlocking, enabling status indication and integration into control circuits for industrial and commercial electrical panels.

## Long description

Siemens 5ST3653 auxiliary contact module is an accessory designed to add signaling and control functionality to compatible Siemens miniature and molded-case circuit breakers. The module provides one or more auxiliary contacts that change state with the breaker, enabling remote status indication and integration into control and alarm circuits within industrial and commercial electrical panels. The accessory fits in-line with the breaker and is intended for use where additional feedback or interlocking is required without changing breaker size or primary protection characteristics.
Advantages
The auxiliary contact module supplies reliable mechanical feedback tied directly to the breaker position, allowing accurate remote indication of ON/OFF/tripped states. It is designed to maintain electrical isolation between the main power circuit and control or signaling circuits, reducing the risk of interference. The compact form factor preserves panel space while extending breaker functionality, and the module is factory-matched to ensure consistent mechanical and electrical compatibility with supported Siemens breakers.
Suitable for
Remote indication of breaker status in control rooms and SCADA systems
Interlocking and safety circuits that require confirmation of breaker position
Alarm circuits to detect tripped or open breaker conditions
Integration into building management and industrial control panels
Key specifications
Function: auxiliary signaling/contact module for circuit breakers
Contact type: changeover or normally open/closed contact configuration depending on model connection
Electrical rating: suitable for low-voltage control and signaling circuits (voltage and current rating per installation requirements)
Mounting: designed to attach to compatible Siemens miniature or molded-case breakers
Connection: screw or push-in terminals for control wiring (refer to breaker and accessory documentation for terminal details)
Mechanical operation: contact state follows breaker handle position for direct status feedback
How to use
Install the auxiliary contact module onto the compatible Siemens breaker following the manufacturer's mechanical coupling instructions and wiring diagrams. Connect the control or signaling conductors to the module terminals, ensuring correct polarity and secure terminations. Verify the module's contact configuration against the control circuit requirements and test operation by operating the breaker handle to confirm that contact states change as expected. Perform insulation and continuity checks as part of initial commissioning and after any maintenance work.
Usage recommendations
Use the module only with breakers and panel installations for which it is specified. Ensure control circuit voltage and current do not exceed the module's rated limits and follow local wiring regulations and safety practices. Regularly inspect terminals and mechanical coupling for wear or loose connections, and test signaling circuits periodically to confirm reliable operation.

## Specifications

| Feature | Value |
|---|---|
| Number of terminals | 1 |

### Design

| Feature | Value |
|---|---|
| Product colour | Multicolour |

## FAQ

### How much does the Circuit breaker accessory Siemens 5ST3653 cost, and is it available for purchase?

The price is 35.49 € (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 12.08.2026 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. 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

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/10655010/59678124_large.webp