Modular disconnecting switch 4P 40A 400VAC SBN440

Modular isolating switch – safety and functionality in one

The SBN440 isolating switch is a reliable device designed for safely disconnecting electrical circuits. Designed for both professional installers and end users, it provides effective protection of the electrical installation and convenient operation. Its compact design, taking up 4 modules, allows for efficient use of space in the distribution board.

Features and application

The device serves to conduct current under normal operating conditions and to safely disconnect the circuit in the event of overloads or short circuits. In addition, it performs an isolating function, which is crucial during maintenance or repair of the installation. It is ideal as a main emergency switch in distribution boards, allowing for quick and reliable disconnection of power. This ensures safety when working with electrical devices.

The SBN440 switch is characterized by a rated current of 40A and a rated voltage of 400V AC. It has 4 poles and 4 switching contacts, making it a universal solution for many applications. The rated switching capacity is 0.846 kA, and the short-circuit strength (Icw) is 0.6 kA – parameters guaranteeing effective protection against the effects of overvoltage and short circuits. The IP20 protection class provides basic protection against contact and ingress of solid objects.

Advantages for the installer and user

• Color-coded lever: makes it easier to identify the switch in the distribution board, which speeds up location and operation during service work.
• Universal auxiliary contacts: compatible with various types of switches and contactors, increasing installation flexibility.
• Quick and reliable operation: Quick break mechanism ensures safe disconnection of the device under load, minimizing the risk of damage.
• Low energy consumption: particularly important in models with a signal lamp equipped with long-life LEDs.
• Compact design: saves space in the distribution board thanks to a width of only 4 modules.
• Biconnect terminals: allow easy connection of fork-type busbars (for models from 40A to 125A).
• Equivalent cage terminals: provide convenient connection of phase/N pin busbars (for models from 16A to 32A).
• Durability and reliability: solid construction guarantees long-term use even in difficult environmental conditions (operating temperature: -20 to 50 °C).
• Installation depth: is 69 mm, which facilitates mounting in standard modular distribution boards.

The SBN440 isolating switch is an investment in the safety and comfort of using the electrical installation – both for professionals and home users.