Contactum Type 2 40kA 3+1 Surge Arrestor Kit for DDB-M/SENC | DDB-T2S4031KIT

Professional Type 2 Surge Protection Kit for Contactum Defender DDB Distribution Boards

The Contactum DDB-T2S4031KIT Type 2 40kA 3+1 Surge Arrestor Kit is a surge protection solution designed for compatible Contactum Defender DDB three-phase distribution board installations.

Specifically intended for use with the Contactum DDB-M/SENC Metering/Surge Protection Enclosure, this kit provides a practical way to incorporate Type 2 surge protection into a compatible electrical distribution system.

Electrical installations can be exposed to transient overvoltages caused by switching operations, disturbances within the electricity supply network and lightning-related electrical activity.

These short-duration voltage surges can place stress on connected electrical equipment, including control systems, electronic devices and sensitive building services.

The Contactum DDB-T2S4031KIT is designed to help limit transient overvoltages as part of a correctly specified and installed surge protection system.

Featuring a Type 2 surge protective device arrangement, a 40kA surge current rating and a 3+1 configuration, the kit is intended for suitable three-phase AC electrical installations.

Its 3+1 arrangement provides a surge protection configuration suitable for applications where three line conductors and a neutral conductor require coordinated protection, subject to the installation's earthing arrangement and electrical design.

The kit is designed for DIN rail mounting, allowing integration into the compatible Contactum DDB-M/SENC enclosure.

With a compact overall size of 200mm × 85mm × 30mm and a manufacturer-stated width of four modular spacings, the DDB-T2S4031KIT offers a space-conscious surge protection solution.

The product is specified for 220–415V AC systems operating at 50–60Hz, with an ambient operating temperature range of -5°C to +40°C.

Whether upgrading an existing distribution board installation or incorporating surge protection into a new commercial electrical project, the Contactum DDB-T2S4031KIT Type 2 Surge Arrestor Kit provides a dedicated solution for compatible Contactum Defender DDB equipment.

Important: This product is the surge arrestor kit. The DDB-M/SENC enclosure and main distribution board are separate products unless expressly included in the supplier's package.

Key Features

• Contactum Type 2 Surge Arrestor Kit
• Manufacturer Part Number: DDB-T2S4031KIT
• Designed for compatible Contactum Defender DDB distribution board installations
• Specifically intended for the DDB-M/SENC Metering/Surge Protection Enclosure
• Surge Protection Type: Type 2
• Surge Current Rating: 40kA
• Configuration: 3+1
• Suitable for appropriately designed three-phase AC installations
• Helps protect electrical equipment against transient overvoltages
• Designed for integration into electrical distribution systems
• Rated Voltage: 220–415V AC
• Frequency: 50–60Hz
• Nature of Supply: AC
• Mounting Method: DIN Rail
• Width: 4 Modular Spacings
• Overall Dimensions: 200mm × 85mm × 30mm
• Net Weight: 868g
• Gross Weight: 874g
• Operating Temperature: -5°C to +40°C
• Maximum 24-Hour Average Ambient Temperature: 25°C
• Suitable for professional electrical installations
• Ideal for commercial and industrial distribution applications
• Designed for compatible three-phase distribution equipment
• DDB-M/SENC Enclosure Sold Separately

Type 2 Surge Protection for Electrical Distribution Systems

The Contactum DDB-T2S4031KIT is classified as a Type 2 surge arrestor kit.

Type 2 surge protective devices are commonly used within electrical distribution systems to help limit transient overvoltages that could otherwise affect connected electrical equipment.

These transient disturbances may originate from switching events, electrical network activity or lightning-related surges.

Benefits of Type 2 Surge Protection

• Helps limit transient overvoltages
• Supports protection of connected electrical equipment
• Suitable for appropriately designed distribution systems
• Helps reduce exposure to damaging electrical surges
• Supports modern electrical installation protection strategies
• Suitable for commercial electrical distribution applications
• Can form part of a coordinated surge protection arrangement

The level of protection achieved depends on the characteristics of the SPD, the electrical installation, the earthing arrangement and the method of installation.

Important: Type 2 surge protection does not replace overcurrent protection, residual current protection or other electrical safety measures.

40kA Surge Current Rating

The DDB-T2S4031KIT is described as a 40kA surge arrestor kit.

This rating identifies the product's stated surge current capability.

The kit is intended to manage transient surge currents within its specified operating characteristics.

Benefits of a 40kA Surge Arrestor

• Designed for surge protection applications
• Suitable for appropriately specified distribution systems
• Helps manage transient electrical disturbances
• Supports protection of connected electrical equipment
• Practical for commercial distribution installations
• Suitable for integration into compatible Contactum equipment

Technical Note: The 40kA designation should not be confused with the continuous current rating of a circuit.

It is also distinct from the surge protective device's voltage protection level.

For precise design calculations, installers should consult the manufacturer's technical documentation to confirm whether the 40kA figure refers to maximum discharge current and to establish the relevant test waveform, nominal discharge current and voltage protection level.

3+1 Surge Protection Configuration

The Contactum DDB-T2S4031KIT features a 3+1 surge protection configuration.

This arrangement is commonly used in three-phase electrical distribution systems where protection is required for the three line conductors and neutral.

A typical 3+1 SPD arrangement uses protection paths between the three line conductors and neutral, together with a separate neutral-to-earth protection path.

Benefits of a 3+1 Configuration

• Suitable for appropriately designed three-phase systems
• Provides a structured multi-conductor protection arrangement
• Designed for installations with three line conductors and neutral
• Supports coordinated electrical distribution protection
• Practical for commercial and industrial applications

The exact internal protective components and permitted earthing systems must be confirmed against the manufacturer's wiring diagram.

Important: The 3+1 configuration does not automatically make the kit suitable for every three-phase earthing arrangement.

Compatibility must be checked by the electrical designer or installer.

Designed for the Contactum DDB-M/SENC Enclosure

A key feature of the DDB-T2S4031KIT is its intended compatibility with the Contactum DDB-M/SENC Metering/Surge Protection Enclosure.

The DDB-M/SENC is an extension enclosure designed for compatible Contactum Defender DDB three-phase distribution boards.

It provides dedicated space for compatible metering and surge protection equipment.

Compatibility Information

• Surge Arrestor Kit: DDB-T2S4031KIT
• Compatible Enclosure: DDB-M/SENC
• Distribution Board Range: Contactum Defender DDB
• Application: Surge Protection Integration
• Mounting Arrangement: DIN Rail

Benefits of the Dedicated Enclosure

• Designed for compatible Contactum DDB equipment
• Provides a dedicated location for surge protection components
• Supports organised distribution board installations
• Helps maintain a coordinated enclosure arrangement
• Suitable for professional electrical distribution projects

Important: The DDB-M/SENC enclosure is not included with the DDB-T2S4031KIT unless specifically stated by the seller.

The enclosure, distribution board and any additional metering equipment should be ordered separately as required.

DIN Rail Mounting for Professional Installation

The Contactum DDB-T2S4031KIT is designed for DIN rail mounting.

DIN rail mounting is widely used in electrical distribution boards and control equipment because it provides a standardised method of securing compatible modular electrical devices.

Benefits of DIN Rail Mounting

• Suitable for compatible distribution enclosures
• Supports organised electrical installations
• Practical for professional electricians
• Allows integration with modular distribution equipment
• Helps maintain a neat internal layout
• Designed for secure installation on the appropriate rail

The kit has a manufacturer-stated width of four modular spacings.

Installers should verify the complete assembly dimensions and required clearances before installation.

Suitable for 220–415V AC Systems

The Contactum DDB-T2S4031KIT is specified for electrical systems with a rated voltage range of 220–415V AC.

It is designed for use on AC electrical supplies operating at 50–60Hz.

Electrical Ratings

• Rated Voltage: 220–415V
• Nature of Supply: AC
• Frequency: 50–60Hz
• Surge Protection Classification: Type 2
• Surge Current Rating: 40kA
• Configuration: 3+1

These ratings make the kit relevant to compatible low-voltage electrical distribution installations.

Important: The rated system voltage should not be used as a substitute for the SPD's maximum continuous operating voltage (Uc). The appropriate Uc and other SPD characteristics must be checked against the manufacturer's technical data before installation.

Compact Design for Distribution Board Integration

The Contactum DDB-T2S4031KIT has compact overall dimensions designed to support installation within compatible distribution equipment.

Product Dimensions

• Width: 200mm
• Height: 85mm
• Depth: 30mm
• Overall Dimensions: 200 × 85 × 30mm
• Width in Modular Spacings: 4

The compact profile supports integration into the intended Contactum enclosure.

Installation Benefits

• Designed for compatible electrical enclosures
• DIN rail mounting
• Four modular spacings
• Suitable for organised distribution board layouts
• Practical for professional electrical installations

Please Note:

Suitable for Commercial Electrical Installations

The Contactum DDB-T2S4031KIT is particularly relevant to commercial and light industrial electrical distribution projects.

Modern buildings often contain electronic equipment that can be affected by transient overvoltages.

Examples include building control systems, communication equipment, lighting controls and other electrical devices.

Typical Applications

• Commercial distribution boards
• Office buildings
• Retail premises
• Warehouses
• Workshops
• Light industrial premises
• Commercial property refurbishments
• Building services installations
• Three-phase electrical distribution systems
• Electrical infrastructure upgrades

The suitability of the kit depends on the system design, earthing arrangement, upstream protection and manufacturer requirements.

Designed for Professional Electrical Installation

The DDB-T2S4031KIT must be installed as part of a correctly designed electrical distribution system.

Surge protective devices require careful consideration of their location, connection arrangement, conductor lengths and associated protective devices.

Installation Considerations

• Confirm compatibility with the DDB-M/SENC enclosure
• Verify the electrical supply arrangement
• Check the system earthing configuration
• Confirm the correct upstream protective device requirements
• Follow the manufacturer's wiring diagram
• Observe required conductor sizes and connection lengths
• Maintain appropriate clearances
• Confirm the relevant SPD ratings
• Install in accordance with current BS 7671 requirements

Where multiple surge protective devices are installed within the same electrical installation, coordination between devices may be necessary.

Important: The kit should be installed and commissioned by a suitably qualified electrical professional.

General Product Information

• Brand: Contactum
• Product Range: Defender DDB
• Manufacturer Part Number: DDB-T2S4031KIT
• Product Name: Type 2 40kA 3+1 Surge Arrestor Kit
• Product Type: Surge Protective Device Kit
• Accessory Category: Distribution Board Surge Protection
• Compatible Enclosure: DDB-M/SENC
• Intended Application: Compatible Contactum DDB Distribution Boards
• Box Quantity: 1
• ABC Indicator: A

• SPD Classification: Type 2
• Surge Current Rating: 40kA
• Protection Configuration: 3+1
• Application: Transient Overvoltage Protection
• Mounting Method: DIN Rail
• Width in Modular Spacings: 4

• Rated Voltage: 220–415V
• Nature of Supply: AC
• Frequency: 50–60Hz
• Nominal Discharge Current (In): Refer to Manufacturer's Technical Data
• Maximum Discharge Current (Imax): Confirm Exact 40kA Rating Definition
• Voltage Protection Level (Up): Refer to Manufacturer's Technical Data
• Maximum Continuous Operating Voltage (Uc): Refer to Manufacturer's Technical Data
• Short-Circuit Withstand Characteristics: Refer to Manufacturer's Technical Data
• Required Upstream Protection: Refer to Manufacturer's Installation Instructions

Physical Dimensions

• Width: 200mm
• Height: 85mm
• Depth: 30mm
• Size / Dimensions: 200 × 85 × 30mm
• Width in Modular Spacings: 4
• Surface Area (Manufacturer Data): 0.051m²

Weight Information

• Individual Unit Weight: 868g
• Net Weight Excluding Packaging: 868g
• Gross Weight Including Packaging: 874g

• Ambient Operating Temperature: -5°C to +40°C
• Maximum 24-Hour Average Ambient Temperature: 25°C
• Supply Type: AC
• Installation Environment: Within a Suitable Compatible Electrical Enclosure

Mounting and Compatibility

• Mounting Method: DIN Rail
• Compatible Enclosure: Contactum DDB-M/SENC
• Compatible Distribution Board Range: Contactum Defender DDB
• Enclosure Included: No
• Distribution Board Included: No
• Additional Metering Kit Included: Not Specified

Commercial Information

• Trade Price: £154.28
• Box Quantity: 1
• ABC Indicator: A
• Gross Weight: 874g
• Net Weight: 868g

The trade price is supplied product information and should be checked against current supplier pricing before publication. VAT treatment has not been specified.

Suitable Applications

The Contactum DDB-T2S4031KIT Type 2 Surge Arrestor Kit is suitable for appropriately designed installations involving:

• Contactum Defender DDB Distribution Boards
• Contactum DDB-M/SENC Enclosures
• Three-Phase Electrical Distribution
• Commercial Electrical Installations
• Office Buildings
• Retail Premises
• Warehouses
• Workshops
• Light Industrial Facilities
• Building Services Distribution
• Electrical Infrastructure Upgrades
• Distribution Board Refurbishments
• Transient Overvoltage Protection
• DIN Rail Mounted Surge Protection
• Professional Electrical Contracting Projects

Suitability must be confirmed against the electrical installation design and manufacturer's technical requirements.

Why Choose the Contactum DDB-T2S4031KIT?

The Contactum DDB-T2S4031KIT Type 2 40kA 3+1 Surge Arrestor Kit provides a dedicated surge protection solution for compatible Contactum Defender DDB electrical distribution installations.

Its Type 2 classification makes it suitable for correctly specified distribution-level transient overvoltage protection.

The 40kA surge current rating and 3+1 configuration provide key characteristics for electrical designers selecting surge protection equipment for appropriate three-phase systems.

Designed for the Contactum DDB-M/SENC enclosure, the kit supports coordinated installation within the Defender DDB distribution board range.

The DIN rail mounting arrangement and four modular spacings make it practical for integration into compatible electrical distribution equipment.

With a rated voltage of 220–415V AC, a frequency range of 50–60Hz and an operating temperature range of -5°C to +40°C, the DDB-T2S4031KIT is designed for professional electrical distribution applications.

Whether specified for a new commercial installation or an electrical distribution upgrade, the Contactum DDB-T2S4031KIT offers a purpose-designed solution for incorporating surge protection into compatible Contactum equipment.