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Mersen Surge Protector Type 1+2 SPD 3 Pole 400 Volt 25KA TNC
MPN: 83120158
Alt. SKU: STPT12-25K275V-3P
Special Price
£368.62
£307.18
Regular Price
£498.79
Why Choose the STPT12-25K275V-3P Surge Protection Device?
The STPT12-25K275V-3P is a robust Type 1+2 surge protection device engineered for three-phase TNC (-/400V) power systems, offering comprehensive protection with a 25kA Iimp (10/350μs) rating per pole. Equipped with three pluggable modules and designed for easy DIN-rail installation across 6 modules, it ensures rapid replacement and minimal downtime.
This SPD is ideal for industrial and commercial environments requiring reliable defence against direct lightning strikes and transient overvoltages. Its three-pole, 3+0 configuration delivers effective protection for main distribution boards, maximising equipment uptime and operational safety.
Product Code: 83120158
Key Benefits
- High surge current capacity with 25kA lightning impulse current rating per pole for superior protection.
- Pluggable modules allow for quick and easy replacement, reducing maintenance time.
- Compact 6-module DIN rail design for efficient installation in electrical panels.
- Clear visual indication system (green OK / replace) for straightforward status monitoring.
- Suitable for three-phase TNC systems, providing comprehensive 3+0 pole protection.
Compatibility
The STPT12-25K275V-3P is compatible with three-phase TNC (-/400V) power systems and designed for installation on standard DIN rails. It integrates seamlessly with main distribution boards in industrial and commercial electrical installations requiring Class I+II surge protection.
Applications
- Industrial power distribution boards
- Commercial building electrical systems
- Protection against direct lightning strikes and transient overvoltages
- Critical infrastructure requiring high reliability surge protection
- Renewable energy installations with three-phase power systems
Frequently Asked Questions
What type of power system is this SPD designed for?
The STPT12-25K275V-3P is designed for three-phase TNC (-/400V) power systems.
How does the indication system work?
The device features a green indicator when operational. If the indicator is not green, it signals that the module needs replacement.
Can the modules be replaced without removing the entire unit?
Yes, the pluggable module design allows for quick and easy replacement of individual modules without removing the entire SPD.
What is the maximum discharge current of this SPD?
The maximum discharge current (Imax 8/20μs) is 100 kA.
Common Search Terms
surge protection device, SPD, Type 1+2 SPD, 3-phase surge protector, DIN rail SPD, lightning protection, industrial surge protection, 25kA surge protector, pluggable SPD modules, TNC system surge protector
Technical Specifications
- Item number: 83120158
- Catalogue No: STPT12-25K275V-3P
- Description: Surge Protection Device Type 1+2, 25kA Iimp (10/350), 3Ph, -/400V, 3+0 TNC, 3 Poles, Pluggable, 6 Modules
- EAN/UPC Code: 8435297859116
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 230/400
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 100 kA
- Protection Modes: L-PE(N)
- System Configuration: TNC
- Lightning Impulse Current (10/350) (LIMP): 25 kA
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace)
- Number of Poles: 3-Pole
- Torque Rating: 3 Nm
- Housing Material: PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- Replacement Plug L1: 83120007
- Product Width: 108 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 1.082 kg
- Sell Pack Width: 103 mm
- Sell Pack Length: 128 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 1.033 kg
| Manufacturer Part Number | 83120158 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297859116 |
| Height | 76mm |
| Width | 108mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 3 Pole |
| Voltage | 400V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 25Ka |
| System Type | TNC |
| Alternative Product SKU | STPT12-25K275V-3P |
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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