20kA Compact Type 2 AC Surge Protective Device

Product Overview

This 20kA Type 2+3 AC surge protective device combines Class II and Class III surge protection functions for low-voltage AC systems.

Its In 10kA, Imax 20kA and Uoc 6kV ratings make it suitable for downstream protection where a compact design and a relatively low voltage protection level are required. Typical installation points include sub-distribution boards, automation panels, machine control cabinets and equipment power-supply panels.

The pluggable MOV modules simplify inspection and replacement. Green/red status indication is standard, while an optional remote contact supports centralized fault monitoring.

For coordinated surge protection, this product can be installed downstream of a Type 1 SPD or a higher-capacity Type 2 SPD.

Key Features

• Type 2+3 / Class II+III AC surge protection

• In 10kA and Imax 20kA under an 8/20μs waveform

• Uoc 6kV combination-wave rating

• Low Up from 1.2kV to 1.6kV

• 275Vac, 320Vac, 385Vac and 440Vac options

• Dedicated 255Vac N-PE module for 1+1 and 3+1 configurations

• Pluggable MOV protection modules

• Compact 18mm module width

• Green/red operating and fault indication

• Internal thermal disconnection device

• Optional NC/COM/NO remote signalling

• Six protection configurations

• 35mm DIN-rail installation

• Maximum backup fuse stated as 32A gG

Technical Specifications

Voltage Options

Select the Uc rating according to the maximum continuous voltage across the SPD terminals, the electrical network and the earthing arrangement. The 255Vac N-PE module is used in the 1+1 and 3+1 configurations.

Model Selection and Protection Modes

Technical Notes

• In is 10kA per listed protection path.

• Imax is 20kA per protection path.

• Imax Total is reproduced from the supplied model-selection table.

• The / symbol means that no value is specified for that protection path.

• The 1+1 and 3+1 configurations use a dedicated 255Vac N-PE module.

• Do not promote the 4+0 model as an “80kA SPD.” The series rating remains Imax 20kA per protection path.

Low Residual Voltage Protection for Sensitive Equipment

The series provides voltage protection levels from Up ≤1.2kV to ≤1.6kV, depending on the selected voltage version.

This low residual-voltage design makes the product suitable for downstream panels and sensitive electrical loads, including automation controllers, power-supply units, electronic control systems and building-control equipment.

The Uoc 6kV rating supports combined Type 2 and Type 3 surge-protection applications where both distribution-level and equipment-level protection are required.

Pluggable Modules and Status Monitoring

Each protection module can be removed from the base for inspection or replacement.

The front indicator provides clear operating status:

• Green: Protection module operating normally

• Red: Protection module requires replacement

Typical Applications

The 20kA Type 2+3 AC surge protective device is suitable for:

• Downstream distribution boards

• Industrial control cabinets

• PLC and automation panels

• Machine control systems

• Building-management systems

• Sensitive electronic equipment

• Power-supply and communication cabinets

• LED lighting control panels

• Commercial sub-distribution panels

• Equipment-level AC power protection

This product is designed for AC systems and should not be used as a photovoltaic DC SPD.

OEM, ODM & Private-Label Type 2+3 SPD Solutions

YQNT supports OEM, ODM and private-label production for electrical distributors, panel builders, automation suppliers, electrical brands and project contractors.

Available options may include:

• Private-label logos and model markings

• Customized product labels and nameplates

• Packaging, barcodes and instruction materials

• UC and protection-mode combinations

• Remote-signalling options

• Datasheets, catalogs and technical documentation

• Product and packaging support for specific target markets

• Selected platform customization, subject to technical evaluation

FAQ

What is a Type 2+3 AC surge protective device?

A Type 2+3 SPD combines Class II and Class III surge-protection functions. It is used for downstream distribution and sensitive-equipment protection after the main surge-protection stage.

What are the In and Imax ratings?

The series is rated at In 10kA and Imax 20kA per protection path under an 8/20μs waveform.

What does the Uoc 6kV rating mean?

Uoc is the open-circuit voltage used for the combination-wave test associated with equipment-level surge protection. The supplied technical documentation specifies a Uoc value of 6kV.

How is this product different from a 40kA Type 2 SPD?

This product has lower discharge-current ratings but adds Type 3 protection characteristics, a Uoc 6kV rating and lower Up values for downstream and sensitive-equipment protection. The 40kA Type 2 SPD is intended for higher-capacity distribution-board protection.

Which Uc ratings are available?

The available main-module ratings are 275Vac, 320Vac, 385Vac and 440Vac.

Which module is used for N-PE protection?

The 1+1 and 3+1 configurations use a dedicated 255Vac N-PE protection module.

Which protection configurations are available?

The series supports 1+0, 2+0, 3+0, 4+0, 1+1 and 3+1 configurations.

Request a Quote for a 20kA Type 2+3 SPD

Need compact downstream surge protection for a distribution panel, control cabinet or sensitive electrical system?

Send us your electrical and purchasing requirements. We will confirm the suitable Uc rating, protection mode, N-PE configuration, remote-signalling option, and available customization before quotation.