320 V AC surge arrester
2P 20–50 kA, Class T1+T2

A surge arrester is a device that protects against transient overvoltages by limiting the frequency and duration of the follow-current. These devices are also known as lightning arresters, surge protectors or varistors. Surge arresters protect equipment connected to the mains and are also an essential component in the protection of solar installations.

This device combines two types of protectors: Type 1 (T1), which handles very high direct surges, and Type 2 (T2), which is designed to protect against indirect or switching surges.

Features of a surge arrester 

• Protection of electrical installation equipment against the effects of surges
• Protection of photovoltaic systems and connected equipment
• T1+T2 surge arrester type
• DIN rail mounting (TH/TS 35)
• Complies with standard IEC (EN) 61643-11
• 2-module
• Rated voltage 320 V AC 
• Required protection 
• Voltage protection level up to 1.8 kV
• Fitted with an additional contact: 1x NO, 1x NC
  

  ❗ The selection and installation of surge arresters must only be carried out by authorised, qualified personnel and depend on the type of lightning protection system used as well as the type of network. ❗

Technical data

• Application: to protect electrical equipment in photovoltaic installations against the effects of overvoltages; to protect installations against induced, switching and atmospheric overvoltages
• Operating indicator – green: protection active; red: no protection
• Protection class – T1+T2
• Number of modules – 2
• Compliance with class requirements: T1+T2
• Maximum operating voltage – Uc 320 V AC
• test current (8/20) In – 20 kA
• Max. current (8/20) Imax – 50 kA
• Voltage protection level Up – ≤ 1.8 kV
• Ingress protection class – IP20
• Mounting – on DIN rail (TH/TS 35)
• Certifications – CE, IEC 61643-11
• Brand – Doktorvolt
• catalogue number – DV-0775