# Siemens 3RH2140-1AP00 Auxiliary Contactor, 4NO Contacts, 230V AC Coil, Size S00

**URL:** https://aio.lv/en/product--siemens-3rh2140-1ap00--1796233
**Data updated:** 2026-05-18 02:39 (EEST)
**Category:** Miscellaneous repair tools
**Manufacturer:** Siemens
**Manufacturer code:** 3RH2140-1AP00
**EAN:** 4011209828506
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 35.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 29.74 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rh2140-1ap00--1796233

## 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 Siemens 3RH2140-1AP00 is a reliable auxiliary contactor designed for industrial control circuits. Featuring a size S00 design, it is equipped with 4 normally open (NO) contacts and operates with a 230V AC control supply voltage. This contactor is ideal for switching auxiliary circuits and control signals in automation systems, ensuring high operational reliability and seamless integration into standard electrical panels.

## Long description

The Siemens 3RH2140-1AP00 is a high-performance auxiliary contactor engineered for demanding industrial control environments. Built in the compact S00 size, this device provides four normally open (NO) contacts, making it an essential component for managing auxiliary circuits and control signals within complex automation systems. Its robust construction ensures consistent performance and long-term reliability in various electrical control applications.
Advantages
This auxiliary contactor stands out due to its space-saving S00 design, which allows for efficient use of space within electrical cabinets and control panels. The unit is designed for high operational reliability, minimizing the risk of downtime in automated processes. Its standardized interface ensures seamless integration with other Siemens control components, simplifying installation and maintenance procedures for technicians and engineers.
Suitable for
Industrial automation control circuits
Switching auxiliary signals in electrical panels
Control systems requiring multiple normally open contacts
Integration into modular control architectures
When it may not be suitable
This device is not intended for switching high-power main circuits or heavy motor loads, as it is strictly designed for auxiliary control purposes. It may also be unsuitable for environments requiring specific protection ratings beyond standard industrial panel enclosures without additional housing.
Key specifications
Size: S00
Contact configuration: 4 normally open (NO) contacts
Control supply voltage: 230V AC
Application: Auxiliary control circuits
How to use
The contactor is designed for mounting onto standard DIN rails or direct installation within a control panel. Ensure the control supply voltage matches the 230V AC requirement before connecting the coil terminals. Wiring should be performed according to the terminal markings to ensure the four normally open contacts function correctly within your control logic. Always verify that the electrical load on the auxiliary contacts remains within the specified operational limits.
What to consider before purchase
Verify that your control circuit voltage is 230V AC
Ensure the S00 size is compatible with your existing panel layout
Confirm that four normally open contacts are sufficient for your specific control logic
Usage recommendations
For optimal longevity and safety, ensure the contactor is installed in a clean, dry environment protected from excessive dust and moisture. Regularly inspect terminal connections for tightness to prevent overheating during continuous operation.

## FAQ

### How much does the Siemens 3RH2140-1AP00 Auxiliary Contactor cost, and is it available for purchase?

The price is 35.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 16 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 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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