# LSiS MMS-LX 1a1b Side Auxiliary Contact Block 1NO 1NC

**URL:** https://aio.lv/en/product--lsis-mms-lx-1a1b--12445262
**Data updated:** 2026-05-18 02:49 (EEST)
**Category:** Printer & Copier Parts
**Manufacturer:** LSiS
**Manufacturer code:** MMS-LX 1a1b
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 15.49 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 12.80 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lsis-mms-lx-1a1b--12445262

## 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 LSiS MMS-LX 1a1b is a side-mounted auxiliary contact block designed for use with motor protection circuit breakers. It features one normally open (NO) and one normally closed (NC) contact configuration. This component provides reliable status signaling and control feedback in industrial electrical systems, ensuring seamless integration and operational safety for your circuit protection setup.

## Long description

The LSiS MMS-LX 1a1b is a side-mounted auxiliary contact block engineered specifically for integration with LSiS motor protection circuit breakers. This device serves as a critical interface for monitoring the operational status of the circuit breaker, providing essential feedback to control systems or signaling devices. With its robust design and precise contact configuration, it ensures reliable performance in demanding industrial environments where circuit protection and status monitoring are paramount.
Advantages
The primary advantage of the LSiS MMS-LX 1a1b is its seamless mechanical and electrical compatibility with compatible motor protection circuit breakers, allowing for quick and secure side mounting. By providing both normally open and normally closed contacts, it offers versatile signaling options for various automation and control logic requirements. Its compact construction minimizes the overall footprint within electrical enclosures, while the high-quality materials used in its manufacturing guarantee long-term operational reliability and consistent switching performance.
Suitable for
Industrial motor control centers
Automated machinery and production lines
Electrical distribution panels requiring status feedback
Safety interlock circuits
When it may not be suitable
This auxiliary contact block is designed exclusively for specific LSiS motor protection circuit breakers. It is not compatible with circuit breakers from other manufacturers or different product series. Furthermore, it should not be used in applications exceeding its rated electrical and environmental specifications.
Key specifications
Contact configuration: 1 Normally Open (NO) and 1 Normally Closed (NC)
Mounting type: Side-mounted
Compatibility: LSiS motor protection circuit breakers
Function: Status signaling and control feedback
How to use
To install the LSiS MMS-LX 1a1b, ensure that the main power supply to the motor protection circuit breaker is disconnected. Align the auxiliary contact block with the designated side mounting interface on the circuit breaker housing. Secure the unit according to the manufacturer's mechanical attachment procedure until it clicks or is firmly fastened. Once installed, connect the control wiring to the appropriate terminals, ensuring that the wire gauge is compatible with the terminal capacity. Verify the operation by manually toggling the circuit breaker and checking for the corresponding state change in the auxiliary contacts using a multimeter.
What to consider before purchase
Verify the exact model of your motor protection circuit breaker to ensure compatibility.
Check the available space on the side of the circuit breaker within your control cabinet.
Ensure your control system voltage and current requirements align with the contact ratings.
Usage recommendations
Always perform a functional test of the auxiliary contacts after installation and before putting the electrical system into full operation to confirm that the feedback signals correctly reflect the circuit breaker position.

## FAQ

### How much does the LSiS MMS-LX 1a1b Side Auxiliary Contact Block cost, and is it available for purchase?

The price is 15.49 € (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 LSiS 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 LSiS 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/12445262/68748482_large.webp