# Power tool switch No name TMM1250 replacement for hammer drill (model TMM1250, part YTMM4100)

**URL:** https://aio.lv/en/product--no-name-ytmm4100--11876912
**Data updated:** 2026-03-09 20:42 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** No name
**Manufacturer code:** YTMM4100
**EAN:** 5903755113528
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 11.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 9.91 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--no-name-ytmm4100--11876912

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

Replacement on/off switch designed for the TMM1250 hammer drill model. Supplied under part number YTMM4100 and compatible with the listed TMM1250 unit, this switch serves as a direct electrical control component for power tools, restoring start/stop functionality. Suitable for repair and maintenance of hammer-drills where the original switch is faulty or worn.

## Long description

Replacement on/off switch designed for the TMM1250 hammer drill model. This electrical control component restores start and stop functionality of the hammer drill and is supplied as a compatible spare part for units that have a faulty or worn main switch. The switch is intended for straightforward replacement during maintenance or repair of the TMM1250 tool, providing the required interface between the user trigger and the drill's motor circuit.
Advantages
The switch provides direct mechanical and electrical compatibility with the TMM1250 hammer drill, enabling repair without modification to the tool housing or wiring harness when the original switch fails. Built for repeated actuation, it re-establishes reliable on/off control and helps extend the working life of the hammer drill by replacing only the defective component. The part is compact and designed to fit the original mounting points and connector arrangement of the referenced model.
Suitable for
Repairing a TMM1250 hammer drill with a non-functional on/off switch
Maintenance work to replace a worn or intermittently working trigger switch
Spare-parts inventory for tool service workshops handling TMM1250 units
Key specifications
Function: on/off (trigger) switch for hammer drill control
Compatibility: intended for use with the TMM1250 hammer drill model
Mounting: designed to fit original switch mounting points and housing cutouts of the specified model
Electrical contacts: rated for typical power-tool motor control currents (matching original switch specifications)
Actuation: manual trigger operation with return mechanism
How to use
Disconnect the hammer drill from the mains and remove any battery pack if applicable before beginning repair. Access the internal switch area by opening the drill housing according to the manufacturer's disassembly steps for the TMM1250. Note the wiring positions and connector orientation, then remove the faulty switch and install the replacement ensuring correct wiring connections and secure mounting. Reassemble the housing and perform a functional check to confirm reliable on/off operation before returning the tool to service.
Usage recommendations
Use only when the tool is powered off and disconnected from any power source. If you are not experienced with small electrical repairs, consider professional servicing to avoid damage to the tool or risk of electric shock. Inspect wiring insulation and connectors during replacement; repair or replace damaged wiring to maintain safe operation.

## FAQ

### How much does the Switch No name TMM1250 (YTMM4100) cost, and is it available for purchase?

The price is 11.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 8 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 20.07.2026 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 No name 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 No name 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/11876912/67293884_large.webp