SPD4 Type 2 & 3 Three Phase SPD
The SPD4 Type 2 & 3 Three Phase SPD from Surge Protection Devices Ltd is available in five manufacturer configurations, allowing you to choose the standalone surge protection device or a complete enclosed assembly. Enclosure options include polycarbonate and metal versions, with selected configurations supplied complete with the specified backup MCB.
Designed for Three Phase TP&N installations, the SPD4 provides 40kA maximum discharge current. It features dual LED status indication, remote changeover contacts and DIN rail mounting. For Electrical4Less listings, this range is described as suitable for TN-C-S, TN-S and TT earthing systems.
Choose Your Configuration
This product is supplied in several manufacturer configurations. Use the Configuration variation selector on this product page to choose the exact version required. Each option has its own genuine manufacturer SKU and product image.
Please note: Where you choose an enclosure or enclosure + MCB variation, connecting cables / conductors are not included. Any cables required to connect the SPD, MCB or enclosure into the installation must be supplied separately by the installer.
Available Configuration Variations
- SPD4 – Standalone SPD
- SPD4ENC – 4 Way Polycarbonate Enclosure
- SPD4ENCM – 8 Way Polycarbonate Enclosure + 32A MCB
- SPD4ENCMET – 4 Way Metal Enclosure
- SPD4ENCMETM – 8 Way Metal Enclosure + 32A MCB
Key Features
- Type 2 & 3 surge protection
- Three Phase TP&N configuration
- 40kA maximum discharge current
- Dual LED status indication – green operational / red failure
- Remote changeover contacts supplied as standard
- DIN rail mountable
- Minimum backup fuse / MCB: 32A
- Minimum cable size: 6mm²
- Suitable for TN-C-S, TN-S and TT earthing systems
- Compliant with BS EN 61643-11
Technical Specification
| Brand | Surge Protection Devices Ltd |
| Product Range | SPD4 |
| Configuration | Three Phase TP&N |
| SPD Classification | Type 2 & 3 |
| Key Rating | 40kA maximum discharge current |
| Earthing Systems | TN-C-S, TN-S and TT |
| Minimum Backup Fuse / MCB | 32A |
| Minimum Cable Size | 6mm² |
| Status Indication | Green operational LED / Red failure LED |
| Remote Contacts | Changeover contacts as standard |
| Mounting | DIN rail |
| Standard | BS EN 61643-11 |
| Maximum Continuous Voltage (Uc) | 275V |
| Nominal Discharge Current (In) | 20kA |
| Maximum Discharge Current (Imax) | 40kA |
| Voltage Protection Level (Up) | ≤1.3kV |
| Response Time | ≤25ns |
| Standalone Device Width | 4 modules |
Legacy Product Reference
The SPD4 range replaces legacy Surge Protection Devices part code(s) SY2C40X and SY2C40XLED. These references are included to help identify the current equivalent when replacing older surge protection equipment.
Downloads
Download the SPD4 Datasheet (PDF)
