Surge protective device iPRD40-T2-4 4-pole Type2 40 kA A9L40400

Electrical installation protection with surge limiters iPRD40-T2-4

This four-pole Type 2 surge limiter with a maximum discharge capacity of 40 kA is a key element in protecting the electrical installation from the effects of surges. The device is designed for mounting on a TH-35 mm DIN rail and provides effective protection in TN-C 3-phase networks. Its task is to minimize the risk of damage to electrical equipment caused by sudden voltage increases, such as those caused by lightning strikes or the switching of large loads.

Construction and application

The iPRD40-T2-4 limiter combines the advantages of a spark gap and a varistor (MOV + GDT), providing a fast and effective response to surges. It is a Type T2 device, meaning it is designed to protect against surges induced in the network and those resulting from internal events, such as motor starting or the operation of protective devices. It has an optical status indicator that informs about the need for replacement after operation – a change from white to red indicates damage. Using a limiter in the electrical installation helps avoid costly repairs and downtime caused by equipment failures.

Key features and benefits

• High discharge capacity: 40 kA provides effective protection even in the event of strong surges.
• Versatility: Designed for 3-phase TN-C networks, making it compatible with most installations.
• Status indication: Optical damage indicator facilitates quick identification of the need to replace the device.
• Compact size: Occupies only 4 modules on the DIN rail, allowing for easy integration with the existing switchboard.
• Safety: Provides protection against overload and short circuit, protecting the electrical circuit from damage.
• Durability: Maximum short-circuit current (Isccr) is as high as 50 kA, guaranteeing reliable operation in difficult conditions.
• Wide range of wire cross-sections: Supports wires with a cross-section of up to 25 mm² (solid/stranded) and 16 mm² (flexible), providing flexibility during installation.
• Protection level: Provides a protection level of up to 1.6 kV, effectively protecting against high surges.
• Compliance with standards: The device meets the relevant safety standards, guaranteeing its reliable operation and safety of use.