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Mersen Surge Protector Type 2+3 SPD 4 Pole 230/400 Volt 10KA TT
MPN: 83230126
Alt. SKU: STPT23-20K275V-4PG-LF
Special Price
£116.16
£96.80
Regular Price
£154.88
Why Choose the Surge Protection Device Type 2+3, 20kA, 3Ph+N, 230/400V, Leakage Current Free?
Designed for robust surge protection in TT earthing systems, the STPT23-20K275V-4PG-LF provides reliable defence for three-phase installations up to 230/400V. With a maximum discharge current of 20kA (8/20) per pole, this 4-pole, pluggable device ensures critical equipment is guarded against transient overvoltages and switching surges.
Its leakage current free design delivers enhanced safety and stability for sensitive applications, with a compact 4-module footprint suited to modern distribution boards. The pluggable modules facilitate rapid maintenance, minimising downtime and ensuring ongoing protection for industrial and commercial power systems.
Technical Specifications
- Item number: 83230126
- Catalogue No: STPT23-20K275V-4PG-LF
- Description: Surge Protection Device Type 2+3, 20kA Imax (8/20), 3Ph+N, 230/400V, Leakage current free, 3+1 TT, 4 Poles, Pluggable, 4 Modules
- EAN/UPC Code: 8435297851219
- RoHS Compliant: Yes
- IEC SPD Type: Class II + III
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 230/400
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 20 kA
- Protection Modes: L-N / N-PE
- System Configuration: TT, TNS
- Combined Discharge Voltage (1,2/50) (Uoc): 10 kV
- Following Current (Ifi): 100 A
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace)
- Number of Poles: 4-Pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 63 A [gG]
- Housing Material: PA66 CT1
- Installation Mounting: DIN rail
- Uc (L-N): 275 V
- Uc (N-PE): 255 V
- Up at In (N-PE): ≤1,5 kV
- Up at In (L-N): ≤1,5 kV
- MCOV L-G: 275 V
- MCOV L-L: 550 V
- MCOV N-G: 277 V
- MCOV L-N: 275 V
- Replacement Plug N-PE: 83230000
- Replacement Plug L-N: 83230003
- Product Width: 72 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.38 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.337 kg
Product Code: 83230126
Key Benefits
- High surge current capacity of 20kA per pole for robust protection.
- Leakage current free design enhances safety for sensitive equipment.
- Compact 4-module size fits neatly into modern distribution boards.
- Pluggable modules allow quick replacement and minimal downtime.
- Visual indication system for easy status monitoring.
- Suitable for TT and TNS earthing systems ensuring versatile application.
Compatibility
This surge protection device is compatible with three-phase plus neutral (3Ph+N) electrical systems operating at 230/400V AC, particularly designed for TT and TNS earthing configurations. It integrates seamlessly with DIN rail mounted distribution boards and is suitable for use with backup fuses up to 63 A [gG]. Replacement plugs for N-PE and L-N are available under catalogue numbers 83230000 and 83230003 respectively.
Applications
- Industrial power distribution boards requiring surge protection.
- Commercial electrical installations with TT earthing systems.
- Protection of sensitive electronic equipment from transient overvoltages.
- Renewable energy systems with three-phase connections.
- Maintenance and retrofit projects needing pluggable SPD solutions.
Frequently Asked Questions
What type of earthing systems is this SPD suitable for?
This device is designed for TT and TNS earthing systems, providing effective surge protection in these configurations.
Is this SPD suitable for single-phase systems?
No, this SPD is specifically designed for three-phase plus neutral (3Ph+N) systems operating at 230/400V.
How does the indication system work?
The device features a green indicator when operating correctly; if the indicator is not green, it signals that the unit should be replaced.
Can the modules be replaced without removing the entire device?
Yes, the pluggable design allows for quick and easy module replacement, reducing downtime during maintenance.
Common Search Terms
Surge Protection Device, SPD Type 2+3, 20kA Surge Protector, 3 Phase SPD, Leakage Current Free SPD, Pluggable Surge Protector, DIN Rail SPD, TT Earthing Surge Protection, Industrial Surge Protection, 230/400V SPD
| Manufacturer Part Number | 83230126 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851219 |
| Height | 70mm |
| Width | 72mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 230/400V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 10Ka |
| System Type | TT |
| Alternative Product SKU | STPT23-20K275V-4PG-LF |
Write Your Own Review
Protection system of coordinated stages: Type 1, 2 and 3 SPDs
The SPDs of a surge protection system must be able to withstand the discharged current and provide a Ures level (residua l voltage) lower than the Ue peak voltage that the equipment can withstand. Most of the times it is not possible to achieve this with just one SPD, especially because the intensity of the surge is not known, and because of the induction of overvoltages when conductors exceed 10m.
The optimal system of protection is the 3-STEP approach, in which successive stages are combined in the performance of high discharge capacity devices and devices with an optimal voltage protection level (low). This is addressed by the definition of "Types" or "Classes" of SPDs according to the type of transient pulses to which each protected zone in the installation is subject to.
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