The Acti 9 iPRD is a surge protection device (SPD) from Schneider Electric’s Acti 9 range, designed to protect electrical installations against transient overvoltages. These overvoltages may arise from lightning activity (direct or indirect), switching operations, or disturbances within the power network.

Surge Protection Function

The iPRD diverts excessive transient energy safely to earth, limiting overvoltage levels and helping to prevent damage to electrical equipment, electronic devices, and sensitive systems. This enhances both system reliability and operational safety.

Type 2 and Type 3 Protection

• Type 2 SPDs are intended for installation at main distribution boards, providing protection against indirect lightning strikes and switching-related surges.
• Type 3 SPDs are typically installed at sub‑distribution boards or close to sensitive loads, providing additional downstream protection. The Acti 9 iPRD range is available in Type 2 and Type 3 variants, allowing coordinated surge protection throughout the installation.

Range of Protection Levels

The iPRD range offers multiple discharge current ratings, enabling selection according to the risk level and installation characteristics. This flexibility ensures effective protection for a wide variety of electrical networks, from standard commercial installations to more demanding industrial environments.

Modular Design

The iPRD features a modular construction with plug‑in (withdrawable) cartridges, allowing:

• Quick installation
• Easy inspection
• Fast replacement after end‑of‑life or surge events

This modular design helps reduce downtime and simplifies maintenance activities.

Standards and Compliance

The Acti 9 iPRD surge protection devices comply with IEC/EN 61643‑11, the international standard governing low‑voltage surge protective devices. Compliance ensures:

• Proven performance
• Electrical and mechanical safety
• Compatibility with modern low‑voltage installations

Incoming and Secondary Protection

The iPRD is suitable for use as:

• Incoming (primary) surge protection at the service entrance or main distribution board
• Secondary or downstream protection at sub‑distribution boards

This allows a layered surge protection strategy, improving overall system resilience.

Applications

The Acti 9 iPRD is suitable for a wide range of installations, including:

• Residential buildings
• Commercial facilities
• Industrial plants and factories
• Data centres and IT installations
• Telecommunications and infrastructure systems

It is particularly valuable where continuity of service and protection of sensitive equipment are critical.

Enhanced Safety and Equipment Protection

By limiting transient overvoltages and diverting surge energy to earth, the iPRD helps to:

• Protect electrical and electronic equipment
• Reduce fire and insulation‑failure risks
• Increase the operational lifespan of connected devices

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Summary

The Acti 9 iPRD surge protection device provides reliable and effective defence against transient overvoltages. Its modular design, availability in Type 2 and Type 3 configurations, and compliance with international standards make it an essential component of modern electrical distribution systems requiring high levels of safety, reliability, and equipment protection.