Surge arrester iPRD1 12.5R-T12-3N 4-pole Type 1+2 (class B+C) A9L16482

Protection against atmospheric discharges and overvoltages

Storms and atmospheric discharges pose a real threat to electrical installations and connected devices. Every year, billions of lightning strikes occur, which can cause fires and damage to electronic equipment. The iPRD1 12.5R-T12-3N surge arrester is a key element of the protection system, designed to minimize the risk of such events. This device effectively protects against both direct and indirect lightning strikes and switching surges.

Functionality and application

The iPRD1 12.5R-T12-3N surge arrester is a four-pole (3P+N) device of class T1+T2 (B+C), designed for mounting on a TH-35 mm DIN rail. Its design based on spark gap-varistor technology ensures a quick and effective response to sudden voltage surges. It has a built-in signaling contact, which optically informs about the operation of the device – white color indicates a working condition, red – damage requiring replacement. This makes it easy to monitor the condition of the installation protection.

The device is compatible with TN-S and TT networks, making it a universal solution for a wide range of applications – from home installations to industrial facilities. The maximum wire cross-section of up to 35 mm² (solid/stranded) and 25 mm² (flexible) ensures easy integration with the existing electrical infrastructure.

Key features and benefits

• High protection efficiency: Impact current of 12.5 kA provides effective protection against the effects of direct lightning strikes.
• Versatility: Class T1+T2 (B+C) allows use in various types of electrical installations.
• Status indication: Built-in signaling contact with optical status indication allows for quick identification of damage and the need to replace the device.
• Easy installation: Mounting on a standard TH-35 mm DIN rail facilitates installation and integration with existing infrastructure.
• Compatibility with different networks: Support for TN-S and TT systems ensures a wide range of applications.
• Safety: Compliance with IEC/EN 61643-11:2011 standards guarantees a high level of safety.
• Compact size: Occupies 8 modules in the distribution board, saving space.
• Durability: Continuous operating voltage up to 350V AC and rated AC voltage 400V ensure reliable operation in various operating conditions.