Mersen 83020101

The SPD Type 2 device, adhering to the EN/IEC 61643-11 standard and certified under UL 1449 4th Edition, serves as a voltage surge discharger suitable for utilization in supply distribution panels where Type 1 protection devices are installed upstream. It can also be employed in commercial environments that are not directly exposed to lightning strikes and lack an external lightning protection system.

This model, identified as STP T2 40, supports a maximum discharge current of 40kA per phase and a nominal discharge current of 20kA per phase. The device has a nominal operating voltage rating of 690V and offers a maximum continuous operating voltage (Uc) of 750V. The surge protection is rated to withstand a short circuit with a current rating (SCCR) of 50 to 100 kA, and it has a short circuit withstand rating (ISCCR) of 25 kA.

With a maximum operating temperature of 85 °C and a minimum operating temperature of -40 °C, this surge protective device ensures reliable performance across a wide range of environmental conditions. The torque rating for installation is specified at 35.4 lb-in. The response time is measured at 25 ns, ensuring rapid action during surges.

Constructed from PA66 CT1 material with V-0 flammability rating, the product accommodates wire types ranging from 6 to 35mm² for rigid wires and 6 to 25mm² for stranded wires. It is designed for AC applications and features a system configuration of TNC. The replacement plug for this device is designated as SP2-30K750V.