# Residual Current Relay 1P+N 16A 30mA ETI KZS-1M-UNI

**URL:** https://aio.lv/en/product--eti-100610345--12372784
**Data updated:** 2026-04-26 20:45 (EEST)
**Category:** Power Sockets
**Manufacturer:** ETI
**Manufacturer code:** 100610345
**EAN:** 3838400098573
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 45.99 €
**Prices and availability valid until:** 2026-07-07 23:59
**Price without VAT (21%):** 38.01 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--eti-100610345--12372784

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 18.06.2026 | free |
| Pickup points | 25.06.2026 | 1.99 EUR |
| Courier delivery to door | 25.06.2026 | 4.99 EUR |

## Summary description

ETI KZS-1M-UNI is a residual current (earth leakage) relay for 1P+N circuits with rated current 16 A and residual operating current 30 mA. Designed to detect imbalance between live and neutral conductors, it provides protection against electric shock and fire risks by tripping a connected breaker or load when leakage is detected. Suitable for residential and light commercial installations requiring an additional leakage monitoring device.

## Long description

ETI KZS-1M-UNI is a residual current (earth leakage) relay for 1P+N circuits with a rated current of 16 A and a residual operating current of 30 mA. The device monitors the difference between live and neutral conductors and operates an external circuit breaker or load when a leakage current above the set threshold is detected. Intended for installation in distribution boards, it provides additional protection against electric shock and reduces fire risk by allowing automatic disconnection when insulation faults or stray currents occur.
Advantages
The relay offers compact design and simple integration into standard DIN-rail distribution panels, enabling leakage monitoring without replacing existing breakers. With a 30 mA sensitivity it meets common safety requirements for personnel protection in living spaces and light commercial applications. The product is passive in terms of switching action, relying on a connected breaker or contactor to isolate the circuit, which allows flexible configuration with a variety of upstream protective devices.
Suitable for
Residential distribution boards where additional leakage detection is needed
Small commercial or office installations requiring earth-leakage monitoring
Retrofit projects where fitting a separate residual current device is impractical
Circuits feeding appliances with potential insulation degradation risks
When it may not be suitable
This residual current relay does not provide direct overcurrent protection and must be used together with an appropriate circuit breaker sized for 16 A or other upstream protective devices. It is intended for 1P+N single-phase systems and is not suitable for three-phase installations without a compatible relay design. For locations requiring automatic disconnection at different sensitivity levels or integrated fault current interruption, a combined residual current device (RCD/RCD breaker) may be more appropriate.
Key specifications
Configuration: 1P + N (single-phase with neutral)
Rated operational current: 16 A
Residual operating current (sensitivity): 30 mA
Function: detection of imbalance between live and neutral conductors (earth leakage)
Mounting: DIN-rail compatible housing for distribution boards
Intended use: detection and signaling to trip an external breaker or load
How to use
Install the relay in the distribution board on a standard DIN rail and wire the live and neutral conductors through the device according to the wiring diagram. The relay senses differential current and closes its control contact when leakage exceeds 30 mA; this contact should be wired to the trip coil of a circuit breaker or to a contactor that interrupts the supply. Verify correct installation and operation by performing recommended insulation and functional tests after wiring, and periodically check the relay and associated protective device for reliable operation.
What to consider before purchase
Confirm the installation is single-phase 1P+N and compatible with a 16 A rated device
Ensure presence of an appropriate upstream circuit breaker or trip device to be operated by the relay
Check available DIN-rail space and panel wiring layout for easy integration
Verify local regulations and required sensitivity for residual current protection (30 mA is typical for personal protection)
Usage recommendations
Use the relay together with a correctly rated circuit breaker or contactor and follow installation standards. Test operation after commissioning and during periodic maintenance to ensure the residual current relay and the associated protective device trip reliably when leakage occurs.

## FAQ

### How much does the Residual Current Relay ETI KZS-1M-UNI 16A 30mA cost, and is it available for purchase?

The price is 45.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 18.06.2026 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 ETI 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 ETI 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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