# Erko SLK\_3SC19-43 Capacitor Switching Contactor

**URL:** https://aio.lv/en/product--erko-slk3sc19-43--12461038
**Data updated:** 2026-05-18 09:34 (EEST)
**Category:** Miscellaneous repair tools
**Manufacturer:** Erko
**Manufacturer code:** SLK\_3SC19-43
**EAN:** 5905912876765
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 91.49 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 75.61 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--erko-slk3sc19-43--12461038

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Erko SLK\_3SC19-43 is a specialized capacitor switching contactor designed for reliable control of capacitor banks. This device is engineered to handle high inrush currents typical in power factor correction systems, ensuring stable operation and longevity of electrical components. It is an essential component for industrial electrical installations requiring efficient reactive power management.

## Long description

The Erko SLK\_3SC19-43 is a specialized capacitor switching contactor engineered for the precise and reliable control of capacitor banks in industrial power factor correction systems. Designed to manage the high inrush currents that occur during the switching of capacitive loads, this contactor protects electrical infrastructure by minimizing transient surges. Its robust construction ensures consistent performance and extends the operational lifespan of both the contactor itself and the connected capacitor units, making it a critical element for maintaining energy efficiency in electrical installations.
Advantages
This contactor offers superior durability when handling the demanding electrical stresses associated with reactive power compensation. By effectively limiting peak currents during the connection phase, it prevents damage to the capacitor bank and reduces wear on the electrical network. The device is built to provide stable, long-term operation in industrial environments, ensuring that power factor correction systems function reliably without frequent maintenance or component failure.
Suitable for
Industrial power factor correction systems
Reactive power management in electrical networks
Switching of capacitor banks in manufacturing facilities
Energy efficiency optimization in commercial electrical installations
When it may not be suitable
This device is specifically optimized for capacitive loads and is not intended for general-purpose motor control or inductive load switching. Using this contactor for applications outside of its design parameters may lead to premature failure or improper operation.
Key specifications
Designed for capacitor switching applications
High inrush current handling capability
Optimized for reactive power compensation systems
Durable industrial-grade construction
How to use
The Erko SLK\_3SC19-43 should be installed by a qualified electrician in accordance with local electrical codes and the manufacturer's wiring diagrams. Ensure that the contactor is mounted securely within a suitable electrical enclosure that provides adequate ventilation. Connect the control circuit to the designated terminals and ensure that the power circuit is correctly phased to the capacitor bank. Before energizing, verify that all connections are tightened to the specified torque and that the system voltage matches the contactor's rating.
What to consider before purchase
Verify the total reactive power (kVAR) of your capacitor bank matches the contactor's capacity
Ensure the control voltage of your system is compatible with the contactor coil
Confirm the installation environment meets the required IP rating for the enclosure
Usage recommendations
Regularly inspect the contactor terminals for signs of heat or oxidation and ensure that the capacitor bank remains within its rated operating parameters to maintain system efficiency and safety.

## FAQ

### How much does the Erko SLK\_3SC19-43 Capacitor Switching Contactor cost, and is it available for purchase?

The price is 91.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 14.07.2026 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 Erko SLK\_3SC19-43 Capacitor Switching Contactor 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 Erko 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 Erko 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/12461038/68763007_large.webp