# Relpol RPB-2ZSMI-UNI Bistable Sequential Relay 2NO 16A 12-240V AC/DC with Memory

**URL:** https://aio.lv/en/product--relpol-864394--12447756
**Data updated:** 2026-05-18 02:53 (EEST)
**Category:** Control Systems
**Manufacturer:** Relpol
**Manufacturer code:** 864394
**EAN:** 5900005263187
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 34.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 28.92 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--relpol-864394--12447756

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The Relpol RPB-2ZSMI-UNI is a bistable sequential relay featuring 2NO contacts rated at 16A. Designed for versatile control applications, it operates on a wide voltage range of 12-240V AC/DC. This relay includes a memory function, ensuring state retention, and supports an 80A (20 ms) inrush current. It is an ideal solution for industrial and building automation systems requiring reliable sequential switching and state memory.

## Long description

The Relpol RPB-2ZSMI-UNI is a high-performance bistable sequential relay designed for precise electrical control in industrial and building automation environments. Featuring two normally open (2NO) contacts with a 16A rating, this device provides reliable switching for various loads. Its universal power supply compatibility, ranging from 12V to 240V AC/DC, allows for seamless integration into diverse electrical systems without the need for multiple relay variants. The integrated memory function ensures that the relay maintains its last state even after a power interruption, providing consistent operation in critical applications.
Advantages
This relay stands out due to its robust construction and ability to handle high inrush currents of up to 80A for 20 milliseconds, making it suitable for demanding lighting and motor control tasks. The bistable mechanism ensures energy efficiency, as the coil does not require continuous power to maintain the contact position. Its compact design facilitates easy installation in standard distribution boards, while the wide voltage range simplifies inventory management and system design by offering a single solution for various voltage levels.
Suitable for
Lighting control systems in commercial buildings
Sequential switching of industrial machinery
Automation of electrical circuits requiring state retention
Energy management systems
When it may not be suitable
This relay is not intended for applications requiring high-frequency switching beyond its mechanical and electrical life ratings. It is also not suitable for environments where the ambient temperature or humidity levels exceed the manufacturer's specified operating limits.
Key specifications
Contact configuration: 2NO (Normally Open)
Rated current: 16A
Supply voltage: 12-240V AC/DC
Inrush current capacity: 80A (20 ms)
Function: Bistable sequential with memory
How to use
The relay should be installed by a qualified professional in accordance with local electrical regulations. It is designed for mounting on standard DIN rails within an enclosure. Connect the control signal to the designated input terminals and the load to the 2NO contact terminals. Ensure that the supply voltage matches the specified range before energizing the device. The sequential operation is triggered by pulses applied to the control input, which toggles the relay state according to the internal logic.
What to consider before purchase
Verify that the total load current does not exceed the 16A rating
Ensure the control signal voltage is compatible with the 12-240V AC/DC range
Check available space in the distribution cabinet for DIN rail mounting
Confirm that the application requirements align with the sequential switching logic
Usage recommendations
For optimal performance and longevity, ensure that the relay is protected against short circuits using appropriate fuses or circuit breakers. Regularly inspect the terminal connections to ensure they remain tight and free from oxidation.

## FAQ

### How much does the Relpol RPB-2ZSMI-UNI Bistable Sequential Relay cost, and is it available for purchase?

The price is 34.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 26 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 06.07.2026 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 Relpol 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 Relpol 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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