# Siemens SIRIUS 3RT2036-1NB30 Power Contactor, 3-Pole, 51A, 20-33V AC/DC, 1NO + 1NC

**URL:** https://aio.lv/en/product--siemens-3rt2036-1nb30--1796518
**Data updated:** 2026-06-02 20:07 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RT2036-1NB30
**EAN:** 4011209939905
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 189.49 €
**Prices and availability valid until:** 2026-08-15 23:59
**Price without VAT (21%):** 156.60 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3rt2036-1nb30--1796518

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 04.08.2026 | free |
| Pickup points | 07.08.2026 | 1.89 EUR |
| Courier delivery to door | 07.08.2026 | 4.99 EUR |

## Summary description

The Siemens SIRIUS 3RT2036-1NB30 is a high-performance 3-pole power contactor designed for reliable switching of electrical loads. It features a rated operational current of 51A and operates with a control voltage range of 20-33V AC/DC. Equipped with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact, this S2 size device is ideal for industrial automation, motor control, and power distribution systems requiring robust and efficient switching solutions.

## Long description

The Siemens SIRIUS 3RT2036-1NB30 is a high-performance 3-pole power contactor engineered for the reliable switching of electrical loads in demanding industrial environments. As part of the renowned SIRIUS series, this contactor offers exceptional durability and operational efficiency. It is designed to handle a rated operational current of 51A and features a flexible control voltage range of 20-33V AC/DC, making it a versatile component for various power management applications.
Advantages
This power contactor stands out due to its robust construction and high switching capacity, ensuring long-term reliability even under frequent operation. The integration of 1 normally open and 1 normally closed auxiliary contact provides enhanced flexibility for control circuit configurations. Its compact S2 size allows for efficient space utilization within control cabinets, while the wide control voltage range simplifies inventory management and integration into diverse electrical systems.
Suitable for
Industrial automation systems
Motor control applications
Power distribution panels
Heating and lighting control circuits
When it may not be suitable
This device is not intended for applications requiring currents exceeding 51A or for environments with extreme environmental conditions that fall outside the specified protection class. It is also not suitable for direct connection to high-voltage power lines without appropriate step-down transformation.
Key specifications
Number of poles: 3
Rated operational current: 51A
Control supply voltage: 20-33V AC/DC
Auxiliary contacts: 1 NO + 1 NC
Size: S2
How to use
The contactor should be mounted on a standard DIN rail or via screw mounting within a protected electrical enclosure. Ensure that the control voltage is connected to the A1 and A2 terminals within the specified 20-33V range. Power cables should be connected to the main power terminals, ensuring proper torque settings are applied to prevent loose connections. Auxiliary contacts can be wired into the control logic to provide feedback or interlock functionality.
What to consider before purchase
Verify that the 51A current rating meets your specific load requirements.
Ensure your control circuit provides a voltage within the 20-33V AC/DC range.
Check available space in your control cabinet for the S2 size housing.
Confirm that the auxiliary contact configuration (1NO + 1NC) matches your control logic needs.
Usage recommendations
Always ensure that the power supply is disconnected before performing any installation or maintenance work on the contactor. Regularly inspect terminal connections for tightness and check for signs of wear or overheating to maintain optimal performance.

## FAQ

### How much does the Siemens SIRIUS 3RT2036-1NB30 Power Contactor cost, and is it available for purchase?

The price is 189.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 04.08.2026 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, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Siemens SIRIUS 3RT2036-1NB30 Power Contactor be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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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