Live Electrical SA440 4 Pole Type 2 SPD
40kA Type 2 Surge Protection Device for TN Systems
The Live Electrical SA440 4 Pole Type 2 SPD is designed to provide surge protection for electrical installations using a four-pole N, L1, L2 and L3 configuration. It offers a maximum discharge current of 40kA and a nominal discharge current of 20kA, helping protect connected electrical equipment against transient overvoltages.
With a protection level of 1.7kV and a compact 72mm four-module design, the SA440 is suitable for mounting onto a standard 35mm DIN rail within compatible distribution equipment.
Key Features
- 4 pole Type 2 surge protection device
- Part number: SA440
- Maximum discharge current Imax: 40kA
- Nominal discharge current In: 20kA
- Protection level Up: 1.7kV
- Nominal voltage: 230V/380V AC, 50/60Hz
- Designed for TN systems
- N, L1, L2 and L3 connection arrangement
- 72mm wide, equivalent to 4 modules
- 35mm DIN rail mounting to EN 60715
- Complies with IEC/EN 61643-11
- Green status indicator: operational
- Red status indicator: module requires replacement
- Terminal capacity: 6mm² to 35mm²
- Recommended terminal torque: 2.5Nm
- IP20 degree of protection
- Maximum gG fuse rating: 125A
- Admissible short-circuit current Isccr: 25kA
- Operating temperature range: -40°C to +85°C
Clear SPD Status Indication
The Live Electrical SA440 4 Pole Type 2 SPD incorporates visual status indicators to make routine inspection straightforward. A green indicator shows that the surge protector is in its normal working state. If an indicator changes to red, the affected module should be replaced to maintain surge protection.
Installation Details
The SA440 is intended for installation and maintenance by suitably qualified personnel. The manufacturer’s instructions specify a minimum 6mm² conductor for the Type 2 SPD connection and a minimum 10mm² PE conductor. All terminal connections should be tightened to the recommended 2.5Nm torque.
Neutral and earth cables are supplied with the SPD, together with a crimp for final termination of the prepared earth cable.
4 Pole Surge Protection
With connections for neutral and three line conductors, the SA440 provides a practical four-pole surge protection solution for compatible TN electrical systems. Its 40kA maximum discharge capability, replace-status indication and standard DIN rail mounting make it suitable for incorporation into professional distribution installations where Type 2 surge protection is required.
