2-pole surge protector class III SPDT3-280/2 170485

Protection of electrical installations and devices – surge protector SPDT3-280/2

This two-pole surge protector of class III, designed for mounting on a TH-35 mm DIN rail, is a key element in protecting the electrical installation from the effects of sudden voltage surges. It protects connected devices from damage caused by overvoltages, ensuring their reliable operation and extending their lifespan. This is particularly important in places exposed to lightning strikes or in the event of frequent voltage fluctuations in the network.

Construction and application

The SPDT3-280/2 surge protector occupies 2 modules on the DIN rail, allowing for easy integration with the existing distribution board. Optical signaling informs about the operation of the device, making it easier to identify situations requiring intervention. It is designed to protect circuits with a rated voltage of 280V AC and a maximum discharge current of 10kA (8/20). It can be used in various network configurations, increasing its versatility. The maximum wire cross-section of 25 mm² allows connection of both solid and stranded wires.

Key features and benefits

• Effective protection: Provides protection against overvoltages of 1.4 kV, minimizing the risk of damage to connected devices.
• Fast response: Reacts to overvoltages in a manner similar to a switch, diverting surge currents to ground or the power grid – does not interrupt the circuit like a fuse.
• Multiple uses: Can operate multiple times without losing its protective properties.
• Versatility: Compatible with various network configurations (including non-standard TN, TT, IT), making it an ideal solution for diverse installations.
• Easy installation: Mounting on a standard TH-35 mm DIN rail is simple and quick, saving installers time.
• Visual signaling: Optical signaling of operation facilitates diagnostics and rapid response in the event of an overvoltage.
• Large wire cross-section range: Support for wires up to 25 mm² provides flexibility in selecting appropriate connections.
• Safety: Overload protection up to 125A (series overcurrent protection) additionally protects the surge protector and installation.