# Siemens 3UG46331AL30 Voltage Monitoring Relay 17-275V AC/DC

**URL:** https://aio.lv/en/product--siemens-3ug46331al30--1801424
**Data updated:** 2026-05-18 02:44 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Siemens
**Manufacturer code:** 3UG46331AL30
**EAN:** 4011209642478
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 151.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 125.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3ug46331al30--1801424

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3UG46331AL30 is a high-precision voltage monitoring relay designed for industrial automation and electrical protection systems. It supports an input voltage range of 17-275V AC/DC, ensuring reliable monitoring of voltage levels in various applications. Manufactured in Germany, this robust relay provides essential safety and control functions for electrical circuits, helping to prevent equipment damage caused by voltage fluctuations.

## Long description

The Siemens 3UG46331AL30 is a high-precision digital voltage monitoring relay designed to ensure the stability and safety of electrical systems. This device provides reliable oversight of voltage levels, protecting sensitive equipment from damage caused by overvoltage or undervoltage conditions. Engineered for industrial environments, it offers a versatile input range and precise control settings to maintain optimal operational parameters in complex electrical circuits.
Advantages
This monitoring relay stands out due to its wide input voltage range, which allows it to be used in diverse electrical setups without the need for multiple devices. The digital interface ensures high accuracy in monitoring, while the adjustable delay and hysteresis settings provide flexibility to prevent nuisance tripping during minor, transient voltage spikes. Its compact design saves valuable space in control cabinets, and the inclusion of an optional error buffer enhances diagnostic capabilities for maintenance teams.
Suitable for
Industrial automation and control systems
Protection of sensitive electronic equipment
Monitoring power supply stability in electrical panels
Replacement for legacy monitoring relay models
When it may not be suitable
This device is not intended for high-voltage power distribution networks exceeding its specified input range. It is also not suitable for applications requiring direct control of high-power loads without an intermediate contactor or relay.
Key specifications
Input voltage range: 17-275 V AC/DC
Width: 22.5 mm
Output: 1 CO contact
Delay time: 0.1 to 20 seconds
Hysteresis: 0.1 to 150 V
Connection type: Screw terminals
How to use
The relay is designed for mounting on standard DIN rails within an electrical enclosure. Connect the monitored voltage source to the input terminals and wire the output contact into your control circuit to trigger an alarm or shutdown sequence when voltage thresholds are exceeded. Use the digital interface to configure the desired overvoltage and undervoltage limits, as well as the specific delay and hysteresis values required for your application.
What to consider before purchase
Ensure the monitored voltage falls within the 17-275 V AC/DC range.
Verify that the 22.5 mm width fits your existing control cabinet layout.
Confirm that the single CO contact is sufficient for your switching requirements.
Check if your application requires the error buffer function for specific diagnostic needs.
Usage recommendations: Regularly test the relay settings during scheduled maintenance to ensure that the configured thresholds remain appropriate for the connected equipment and that the device operates correctly under simulated fault conditions.

## Specifications

| Feature | Value |
|---|---|
| Package weight | 138 g |
| Country of origin | Germany |
| Package depth | 99 mm |
| Package height | 107 mm |
| Package width | 29 mm |
| DC voltage range | 17 - 275 |
| AC input voltage | 17 - 275 |
| Sustainability compliance | Yes |
| Sustainability certificates | REACH, RoHS, WEEE |

## FAQ

### How much does the Siemens 3UG46331AL30 Voltage Monitoring Relay cost, and is it available for purchase?

The price is 151.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 07.07.2026 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 3UG46331AL30 Voltage Monitoring Relay 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

### Where can I download the instructions for Siemens 3UG46331AL30 Voltage Monitoring Relay?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

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