Meter Isolator with 100A Main Switch & Surge Protection (WEC440SP)
18th Ed. Compliant
2-Year Warranty
UK Stock
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The WEC440SP is a compact 4 module meter isolator enclosure combining a 100A double pole main switch with an integral Type 2 surge protection device. Built around a 3 part seal and secure enclosure, this unit provides manual control of electrical devices while also adding surge protection in one space-saving...
The WEC440SP is a compact 4 module meter isolator enclosure combining a 100A double pole main switch with an integral Type 2 surge protection device.
Built around a 3 part seal and secure enclosure, this unit provides manual control of electrical devices while also adding surge protection in one space-saving assembly. The manufacturer data sheet confirms a 2 pole 100A main switch with an integral SPD240, making it a practical option where isolation and surge protection are needed together without taking up space in the main board.
The WEC440SP is suitable for resistive and moderately inductive loads such as switching lighting and heating control boards in homes, shops, offices, warehouses, factories, and hospitals. For a version without built-in surge protection, see our 100A meter isolator.
- 100A double pole main switch – compact isolation and switching solution
- Integral Type 2 SPD – SPD240 rated to 40kA max discharge
- Seal and secure enclosure – 3 part design with anti-tamper sealing features
- Lockable – switch can be locked through a padlock or suitable lock
- Compact format – 4 module enclosure, 95mm x 145mm x 82mm
- Installer-friendly layout – DIN rail device fixing with top and bottom cable entry points
Dimensions: 95mm (W) × 145mm (H) × 82mm (D)
What is the WEC440SP?
The WEC440SP is a compact enclosure combining a 100A double pole main switch with an integral Type 2 SPD rated up to 40kA.
What type of surge protection does it include?
This unit includes an integral WSPD240 Type 2 surge protection device for 230V single-phase systems.
Is the WEC440SP lockable?
Yes. The manufacturer states that the switch is lockable through a padlock or by means of a lock.
What size is the enclosure?
The catalogue dimensions for the WEC440SP are 95 x 145 x 82mm.
What type of loads is it suitable for?
Whitecliffe states that it is suitable for resistive and moderately inductive loads, such as switching lighting and heating control boards in homes, shops, offices, warehouses, factories, and hospitals.
What ingress rating does the enclosure have?
The enclosure is rated IP20.
What cable entry options does it have?
The data sheet lists 4 cable entry points on the top and 4 on the bottom, each with a maximum size of 25mm.
| Product Code | WEC440SP |
| Description | 100A main switch & 40kA SPD |
| Main Switch | 2 pole 100A main switch |
| Main Switch Voltage | 230V AC |
| Main Switch Standard | BS EN 60947-3 |
| Category of Duty | AC22A-100A |
| Terminal Capacity | 1 x 6mm² min / 1 x 50mm² max |
| Short-Circuit Resistance Without Upfront Fuses | 7kA |
| Short-Circuit Resistance With Upfront Fuses | 16kA |
| Mechanical Service Life | >8500 operations |
| Electrical Service Life | >1500 operations |
| Max Allowed Current <1 sec | 2kA |
| SPD Model | WSPD240 |
| SPD Type | Type 2 |
| SPD Network | 230V single-phase |
| Max. AC Operating Voltage (Uc) | 275V |
| Nominal Discharge Current (In) | 20kA |
| Maximum Discharge Current (Imax) | 40kA |
| Total Maximum Discharge Current | 40kA |
| Protection Level (Up) | 1.5kV |
| Protection Level N/PE at 5kA | 0.7kV |
| Residual Voltage L/PE at 5kA | 0.7kV |
| Admissible Short-Circuit Current | 25kA |
| SPD Connection | Screw terminals, 2.5–25mm² |
| Mounting | 35mm symmetrical DIN rail (DIN 60715) |
| Operating Temperature | -40°C to +85°C |
| Ingress Protection | IP20 |
| Disconnection Indicator | 1 mechanical indicator by pole, red/green |
| SPD Fuses | 50A min – 125A max, type gG |
| SPD Standards | IEC 61643-11 / EN 61643-11 |
| Enclosure Colour | Grey |
| Cable Entry | 4 on top (max 25mm), 4 on bottom (max 25mm) |
| Front Cover | Two part type (top and bottom) |
| Anti-Tamper Security | Using wire seal |
| Top / Bottom Cover Sealing | Wire seal or blank disc |
| Max Opening | 4 modules |
| Dimensions | 95 x 145 x 82mm |
This unit should be installed by a qualified electrician in accordance with current wiring regulations, manufacturer guidance, and the requirements of the installation.
- Mount the enclosure securely in a suitable indoor location
- Use the available top or bottom cable entry points as required
- Ensure all conductors are correctly terminated within the stated terminal capacities
- Where using the SPD, keep connecting conductors as short as practicable
- The manufacturer guidance indicates wiring layouts for TN-S and TT systems, with 0.5m preferred and 1m maximum connection length guidance for the SPD arrangement
- Use the sealing and locking features where safe isolation or tamper resistance is required
The enclosure is rated IP20 and is intended for suitable indoor applications.
