# Hager MZ520N Auxiliary Contact 1NO+1NC Side Mount

**URL:** https://aio.lv/en/product--hager-mz520n--7691334
**Data updated:** 2026-05-18 02:45 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** Hager
**Manufacturer code:** MZ520N
**EAN:** 3250614565106
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 31.99 €
**Prices and availability valid until:** 2026-08-10 23:59
**Price without VAT (21%):** 26.44 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hager-mz520n--7691334

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 30.07.2026 | free |
| Pickup points | 04.08.2026 | 1.89 EUR |
| Courier delivery to door | 04.08.2026 | 4.99 EUR |

## Summary description

The Hager MZ520N is a side-mounted auxiliary contact designed for electrical enclosures. It features a 1NO (normally open) and 1NC (normally closed) configuration, supporting an AC input voltage range of 220 - 500 V. This accessory is essential for monitoring and signaling the status of circuit breakers or switches within industrial and residential electrical distribution systems.

## Long description

The Hager MZ520N is a professional-grade side-mounted auxiliary contact designed to enhance the functionality of electrical distribution systems. This device provides reliable status monitoring for circuit breakers and switches, ensuring that the operational state of your electrical installation is always known. Engineered for seamless integration, it offers a robust 1NO (normally open) and 1NC (normally closed) configuration, making it a versatile component for complex electrical setups.
Advantages
This auxiliary contact stands out due to its precise engineering and compatibility with a wide range of electrical enclosures. By providing real-time feedback on the position of the main switching device, it significantly improves system safety and operational transparency. Its side-mount design allows for efficient space utilization within distribution boards, while the high-quality construction ensures long-term reliability and consistent performance under varying electrical loads.
Suitable for
Monitoring the status of circuit breakers in residential distribution boards
Signaling the operational state of switches in industrial electrical systems
Integration into automated control and monitoring circuits
Electrical installations requiring feedback on device position
When it may not be suitable
This device is not intended for use in circuits exceeding the specified voltage range of 220 to 500 V AC. It is also not compatible with circuit breakers or switches that do not support side-mounted auxiliary contact accessories.
Key specifications
Configuration: 1NO (normally open) + 1NC (normally closed)
Mounting type: Side mount
Input voltage range: 220 - 500 V AC
Application: Status monitoring and signaling
How to use
The Hager MZ520N should be installed by a qualified electrician in accordance with local electrical regulations. Before installation, ensure that the main power supply to the distribution board is disconnected. The device is designed to be attached to the side of the compatible circuit breaker or switch. Once physically secured, connect the auxiliary contact terminals to your monitoring or signaling circuit according to the wiring diagram provided with your main switching device. After installation, verify the operation by manually toggling the circuit breaker to ensure the auxiliary contact correctly signals the state change.
What to consider before purchase
Verify compatibility with your specific circuit breaker or switch model
Ensure the control circuit voltage falls within the 220-500 V AC range
Confirm available space on the side of your existing modular devices
Usage recommendations: Regularly inspect the electrical connections to ensure they remain tight and free from oxidation. Test the signaling functionality during routine maintenance of the electrical distribution system to guarantee continued operational safety.

## Specifications

| Feature | Value |
|---|---|
| Quantity | 1 |

### Power

| Feature | Value |
|---|---|
| AC input voltage | 220 - 500 |

## FAQ

### How much does the Hager MZ520N Auxiliary Contact 1NO+1NC cost, and is it available for purchase?

The price is 31.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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. 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 Hager 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 Hager 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

https://aio.lv/img/cache/product/7691334/59473161_large.webp