Single Module Type 2 Surge Protection Device (WSPD140)

The WSPD140 is a compact single module Type 2 Surge Protection Device designed to help protect electrical installations against transient overvoltages caused by switching events and lightning-related surge activity. With a 20kA nominal discharge current and 40kA maximum discharge rating, it provides practical board-level surge protection in a space-saving DIN rail format.

This DIN rail SPD is suited to suitable consumer units, sub-boards, EV-ready systems and other installations where a compact surge protection module is required. Its single-module width makes it useful where enclosure space is limited but Type 2 surge protection is still needed.

• Single module Type 2 SPD – compact surge protection format
• 20kA nominal / 40kA maximum discharge rating – protection against transient overvoltages
• DIN rail mounted SPD – practical for consumer units and distribution boards
• Compact 1-module width – useful where enclosure space is limited
• Standalone surge protection module – suitable for separate SPD arrangements
• Mechanical status indication – visual inspection of SPD condition
• IEC 61643-11 compliant – recognised SPD standard

WSPD Type 2 SPD Range

Compact DIN Rail Surge Protection

A compact DIN rail surge protection device can be useful where a board or enclosure has limited spare space but surge protection is still required under the installation design.

The WSPD140 provides a practical single module SPD option for board-level surge protection within suitable domestic and commercial electrical systems.

It is commonly used inside consumer units, sub-boards and other DIN rail assemblies where a standalone Type 2 SPD module is preferred.

• Model: WSPD140
• Product Type: Type 2 Surge Protection Device (SPD)
• Configuration: 1 Pole
• Nominal Discharge Current (In): 20kA
• Maximum Discharge Current (Imax): 40kA
• Voltage Rating: 230V AC
• Dimensions (W × H × D): 18 × 90 × 65mm
• Mounting: 35mm DIN rail
• Application: Compact board-level surge protection
• Status Indicator: Mechanical red / green indicator
• Standards: IEC 61643-11 / EN 61643-11

The WSPD140 single module SPD should be installed by a qualified electrician in accordance with the installation design, current wiring regulations and manufacturer guidance.

• Install as close as practical to the protected board or equipment
• Keep earth and connecting conductors short and direct
• Mount onto a standard 35mm DIN rail
• Check SPD status indication during commissioning and inspection
• Coordinate with upstream or downstream surge protection where required
• Install inside a suitable enclosure or consumer unit

What is the WSPD140 used for?

The WSPD140 is a compact single module Type 2 surge protection device used to help protect electrical systems from transient overvoltages and surge activity.

Is the WSPD140 DIN rail mounted?

Yes. The WSPD140 is designed for installation onto a standard 35mm DIN rail inside a suitable enclosure or consumer unit.

What is the difference between the WSPD140 and WSPD240?

The WSPD140 is a single-module 1-pole SPD, while the WSPD240 is a 2-pole Type 2 SPD for broader single-phase surge protection arrangements.

What surge rating does the WSPD140 have?

The WSPD140 has a 20kA nominal discharge current and 40kA maximum discharge rating.

Can this SPD be used in EV or heat pump installations?

Yes, where a compact Type 2 SPD module is suitable for the board design and surge protection arrangement.

What does the status indicator show?

The mechanical status indicator provides a visual check of the SPD condition during inspection and maintenance.