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header-product Siemens Sirius 3RF2450-1AC45 Three-Phase Solid State Relay, 50 A, 48-600 V AC, 4-30 V DC Control
263.49 €

Siemens Sirius 3RF2450-1AC45 Three-Phase Solid State Relay, 50 A, 48-600 V AC, 4-30 V DC Control

Siemens Sirius 3RF2450-1AC45 Solid State Relay Photo 1
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Siemens Sirius 3RF2450-1AC45 Three-Phase Solid State Relay, 50 A, 48-600 V AC, 4-30 V DC Control

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Siemens Sirius 3RF2450-1AC45 Three-Phase Solid State Relay, 50 A, 48-600 V AC, 4-30 V DC Control

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Short description

The Siemens Sirius 3RF2450-1AC45 is a high-performance three-phase solid state relay designed for industrial switching applications. It features a rated operational current of 50 A and a switching voltage range of 48-600 V AC. With a control voltage of 4-30 V DC, this relay provides reliable, wear-free switching for heating elements and motor controls in demanding automation environments.
Available for order: 1 pcs.
Warranty: 2 Years
SKU: 1793185
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Cheapest delivery:

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Pick-up points

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Cost

1.89 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
30.07.2026 {{selectedOffer.officeDeliveryString}}
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Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
04.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 2.00 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
04.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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36 months installment: from 7.32 euros per month
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Product information

Description

The Siemens Sirius 3RF2450-1AC45 is a robust three-phase solid state relay engineered for precise and reliable switching in industrial automation systems. This device is specifically designed to handle high-current loads, offering a rated operational current of 50 A and a broad switching voltage range between 48 V and 600 V AC. By utilizing semiconductor technology, it ensures silent, wear-free operation, making it an ideal replacement for traditional electromechanical contactors in environments where frequent switching is required.

Advantages

The primary benefit of this solid state relay is its exceptional durability and longevity due to the absence of moving mechanical parts. This design significantly reduces maintenance requirements and eliminates the risk of contact wear, even under high-frequency switching cycles. Furthermore, the device provides rapid response times and high electromagnetic compatibility, ensuring stable performance in complex electrical installations. Its compact design allows for efficient space utilization within control cabinets, while the wide control voltage range offers flexibility for various automation control systems.

Suitable for

  • Industrial heating element control
  • Motor control applications
  • Frequent switching operations in automation
  • Systems requiring silent electrical switching

This relay may not be suitable for applications requiring galvanic isolation that exceeds the specifications of semiconductor devices or in environments with extreme ambient temperatures that fall outside the manufacturer's recommended operating range. It is also not intended for use in circuits where high leakage currents in the off-state could interfere with sensitive downstream equipment.

Key specifications

  • Rated operational current: 50 A
  • Switching voltage range: 48-600 V AC
  • Control voltage range: 4-30 V DC
  • Phase configuration: Three-phase
  • Technology: Solid state semiconductor

Installation should be performed by qualified personnel in accordance with local electrical regulations. The relay must be mounted on a suitable heat sink to ensure proper thermal dissipation, as semiconductor devices generate heat during operation. Ensure that the control signal is connected to the designated terminals and that the load circuit is correctly wired to the output terminals, observing the voltage and current limits specified for the device.

What to consider before purchase

  • Ensure the load current does not exceed 50 A
  • Verify that the control system provides a 4-30 V DC signal
  • Confirm that the application environment allows for proper heat dissipation
  • Check that the three-phase voltage supply is within the 48-600 V AC range
For optimal performance and longevity, always use an appropriately sized heat sink and ensure adequate ventilation within the control cabinet to prevent overheating.

Description

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Customer questions

FAQ

How much does the Siemens Sirius 3RF2450-1AC45 Solid State Relay cost, and is it available for purchase?

The price is 263.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 30.07.2026 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, Installment. All transactions are 100% secure and encrypted.

Can Siemens Sirius 3RF2450-1AC45 Solid State Relay be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Siemens Sirius 3RF2450-1AC45 Solid State Relay online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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