DC surge arrester type II for CORE1

SMA DC Type II Surge Protection Kit for CORE1 Inverters

Surge protection on the DC side is a fundamental requirement in any professional photovoltaic installation. The SMA DC_SPD_KIT4-10-AT is an official spare part designed to equip or replace the DC surge protective device (SPD) on SMA CORE1 inverters. It addresses the need for reliable protection against indirect lightning strikes and switching overvoltages that can permanently damage inverter electronics.

Compatibility and Intended Use

This kit is exclusively designed for SMA CORE1 series inverters. It is intended for professional installers and maintenance technicians who need to bring an existing installation into compliance or upgrade its level of DC-side protection. Installing a Type II DC SPD is frequently required by local electrical standards and is considered best practice in grid-connected and self-consumption PV systems.

Role of a Type II DC Surge Arrester

A Type II surge arrester acts as a second level of protection. It clamps residual overvoltages that may not have been fully absorbed by an upstream Type I device. Installed on the DC side — between the solar modules and the inverter input — it prevents transient voltage spikes from reaching and damaging the sensitive electronic components inside the inverter.

Using an SPD specifically matched to the inverter, such as this official SMA kit, ensures that the protection device's electrical characteristics are correctly rated for the voltage and current ranges of the CORE1 platform.

Kit Contents

This kit is referenced under part number DC_SPD_KIT4-10-AT. As no detailed component list has been provided by the manufacturer for this listing, we strongly recommend consulting the official SMA technical documentation or contacting our technical team to confirm the exact kit contents before placing your order. We do not list components speculatively.

Installation and Safety

This kit must be installed by a qualified electrician with competency in DC photovoltaic systems. All work must be carried out with the system de-energised, following SMA's installation guidelines and applicable local electrical standards. Improper installation may void the inverter warranty and create safety hazards.

Why Choose an Official SMA Spare Part?

Genuine SMA spare parts guarantee certified compatibility with your CORE1 inverter, eliminating the risk of electrical mismatch or non-compliance. Wattuneed supplies official SMA components to customers in France and Belgium, with technical support available before and after purchase.