The Iskra Zaščite PROTEC C 40/320 is a Type 2 Surge Protection Device (SPD) designed to protect electrical installations and equipment from transient overvoltages caused by indirect lightning strikes or switching surges in the electrical network.

This model features a 3P + PEN configuration, making it suitable for three-phase power distribution systems with a combined PEN conductor, typically found in TN-C electrical systems used in industrial installations and power distribution networks.

Designed for installation inside electrical distribution boards, the device mounts on a standard DIN rail, providing reliable protection for electrical systems, automation equipment, sensitive electronics, and critical infrastructure.

The PROTEC C 40/320 offers a nominal discharge current of 20 kA and a maximum discharge current up to 40 kA, ensuring strong protection against voltage spikes and transient surges.

⚙️ Technical Specifications

Brand: Iskra Zaščite
Series: PROTEC
Model: PROTEC C 40/320
Device type: Surge Protection Device (SPD)
SPD Class: Type 2 (Class C)
Configuration: 3P + PEN

🔌 Electrical Ratings

• Maximum continuous operating voltage (Uc): 320 V AC

• Voltage protection level (Up): ≤ 1.5 kV

⚡ Discharge Current

• Nominal discharge current (In): 20 kA

• Maximum discharge current (Imax): 40 kA

🔧 Installation

• Mounting on 35 mm DIN rail

• Installation in main or secondary distribution boards

• Direct connection to three-phase networks with PEN conductor

🔌 Additional Protection

A backup fuse is required for safe operation:

• Recommended backup fuse: 125 A gL

🏭 Applications

Ideal for:

✔ Industrial electrical panels
✔ Three-phase power distribution systems
✔ Industrial automation installations
✔ Protection of sensitive electronic equipment
✔ Commercial and industrial buildings
✔ Photovoltaic systems and energy distribution networks