Disconnect switch with visible contact break, front rotary drive, DPX-IS250 3P 250A 026633

DPX-IS 250 isolator switch – reliable disconnection with visible contact gap

This DPX-IS 250 series isolator switch with a visible contact gap is a robust solution for safely disconnecting electrical circuits. Designed for use in both industrial installations and public buildings, it provides effective isolation and protection against accidental switching on. The front rotating drive construction facilitates operation and allows for quick switching.

Functionality and application

DPX-IS 250 is a multifunctional device that can serve as a safety switch, maintenance switch, and main installation switch. Thanks to the possibility of cooperating with overvoltage and undervoltage releases (available separately), its operation can be adapted to specific application needs. It is ideal for switchboards, where it ensures safe and controlled disconnection of circuits. Equipped with three switchable auxiliary contacts, it allows integration with control and signaling systems.

Key features and benefits

• Safety first: Visible contact gap guarantees a reliable isolation of the circuit after switching off, minimizing the risk of electric shock during maintenance or repair work.
• Versatility: Can be used as a safety switch, maintenance switch or main switch – one device performs many functions.
• Easy operation: Front rotating drive provides convenient and intuitive switching, even in difficult conditions.
• Solid construction: Made of high-quality materials, ensuring long-lasting and reliable operation.
• Compatibility: Possibility of mounting on TH35 rail and cooperation with various accessories (releases, auxiliary contacts) increases installation flexibility.
• Compliance with standards: Meets the requirements of PN-EN 60947-3 standard, which confirms its safety and quality.
• High short-circuit resistance: Rated withstand current Icw is 9 kA, which ensures protection of the installation in the event of a failure.
• Expandability: Optional overvoltage release allows for additional protection of the circuit against overvoltage.

Technical parameters in practice

The DPX-IS 250 isolator switch is adapted to work in circuits with a rated voltage of 230…690 V and a rated continuous current of up to 250 A. The rated operating power for AC-23 at 400 V is 100 kW, making it suitable for applications requiring high power consumption. The IP20 degree of protection provides protection against accidental contact with live parts. The built-in locking mechanism increases safety by preventing accidental switching on of the device during maintenance work. The connection of the main contacts is realized by screw connections – a proven method ensuring a reliable and durable connection of the wires.