Selecting the right disconnector switch for a given application requires considering several criteria.
Disconnect switch selection criteria
Here is a detailed explanation of each criterion:
Rated Voltage (Ue)
The rated voltage is the maximum voltage that the disconnector switch can handle under normal operation. It is crucial to choose a switch with a rated voltage suitable for your electrical installation to ensure safety and reliability.
Rated Current (In)
The rated current is the maximum current that the disconnector switch can handle continuously. It must be high enough to manage the current of all the devices connected to the circuit without overheating or damaging the device.
Number of Poles
The number of poles determines how many independent circuits can be controlled by a single disconnector switch. Typical configurations include:
- 1 pole: For simple single-phase circuits.
- 2 poles: For single-phase circuits with neutral or two-phase circuits.
- 3 poles: For three-phase circuits without neutral.
- 4 poles: For three-phase circuits with neutral. The choice depends on the type of electrical network and the need to isolate multiple conductors.
Breaking Capacity (Icu)
The breaking capacity is the maximum current that the disconnector switch can interrupt without being damaged. This is especially important in applications where short circuits may occur, as it ensures that the switch can safely interrupt the current without causing damage.
Operating Environment (Indoor or Outdoor)
The environment in which the disconnector switch will be used affects the choice of the model. Switches used outdoors or in harsh environments must have specific characteristics such as:
- Protection Index (IP): Switches with a high protection index (e.g., IP65) are resistant to dust and water, making them suitable for outdoor use.
- Weather and UV Resistance: To avoid damage caused by sun exposure and various climatic conditions.
- Mechanical Robustness: To withstand impacts and vibrations.
Application Example: Securing a Photovoltaic Installation
When setting up a photovoltaic installation, it is essential to choose an appropriate disconnector switch. For example, a 10 kW installation with a voltage of 400V and a current of 25A would require a switch with a rated voltage of at least 400V, a rated current of 25A or more, and a sufficient breaking capacity to handle potential short circuits. Additionally, if the installation is located outdoors, a switch with an IP65 protection index would be necessary to ensure protection against weather conditions.
Optim-Elec offer: a large range of disconnector switches
Description of Socomec Range of Disconnector Switches
On our site, we offer a wide range of Socomec disconnector switches, known for their reliability and performance. Here is an overview of the main models available:
- SIRCO M: These compact and modular disconnector switches offer a flexible solution for various applications. They are available in versions from 16A to 125A, with configurations ranging from 1 to 4 poles.
- SIRCO: Ideal for industrial applications, this model offers high breaking capacities and exceptional mechanical robustness. SIRCO switches can handle currents ranging from 125A to 3200A.
- SIRCO PV: Specifically designed for photovoltaic installations, these disconnector switches are optimized for direct currents and offer effective protection against overvoltages.
Description of Telergon Offer
Telergon offers a comprehensive range of disconnectors for various applications, including photovoltaic installations. Here is an overview of some key products from Telergon's range:
- S3 AC Series: These disconnector switches in plastic enclosures are designed for AC applications with a rated voltage up to 690V and a rated current of 20A. They comply with IEC 60947-3 standards and offer IP66 protection for outdoor use.
- F1 DC Series: These disconnector switches are suitable for DC applications, with a rated voltage of 1500V and a rated current of 32A. They offer various mounting options, including DIN rail, panel mounting, and plastic or aluminum enclosures.
- F7 DC Series: Designed for high voltage applications, these modular disconnector switches can be configured from 2 to 10 levels. They are suitable for voltages up to 1500V and currents up to 55A. They offer IP66 protection and comply with IEC/EN60947-3, AS60947.3, UL508i, and GB/T14048.3 standards.
Discover our complete range of Socomec and Telergon disconnector switches on our website.
