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Mersen Surge Protector Type 2 SPD 2 Pole 230 Volt 20KA TNS
MPN: 83020122
Alt. SKU: STPT2-40K275V-2P
This product is discontinued.
Please view this replacement item.
Why Choose the STPT2-40K275V-2P Surge Protection Device?
The STPT2-40K275V-2P Surge Protection Device offers robust Type 2 protection with a maximum discharge current of 40kA (8/20μs), making it ideal for safeguarding single-phase + neutral (1Ph+N) 230V TNS systems. Its two-pole, pluggable design ensures straightforward installation and maintenance in modern distribution boards.
This SPD reliably mitigates transient overvoltages, enhancing equipment longevity and system integrity. Engineered as a compact, two-module unit, it delivers effective surge protection for critical industrial and commercial electrical installations.
Technical Specifications
- Item number: 83020122
- Catalogue No: STPT2-40K275V-2P
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 1Ph+N, 230/-V, 2+0 TNS, 2 Poles, Pluggable, 2 Modules
- EAN/UPC Code: 8435297849612
- RoHS Compliant: Yes
- IEC SPD Type: Class II
- UL SPD Type: Type 2 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 230
- AC or DC: AC
- Nominal Discharge Current (In) (8/20): 20 kA
- Max Discharge Current : Imax (8/20): 40 kA
- Protection Modes: L-PE / N-PE
- System Configuration: TNS
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace)
- Number of Poles: 2-Pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 125 A [gG]
- Housing Material: PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- MCOV L-G: 320 V
- MCOV N-G: 277 V
- MCOV L-N: 320 V
- VPR L-G: 900 V
- VPR N-G: 900 V
- VPR L-N: 1800 V
- Replacement Plug L1: 83020002
- Product Width: 36 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.237 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.206 kg
Product Code: 83020122
Key Benefits
- High surge current capacity of 40 kA ensures reliable protection against transient overvoltages.
- Pluggable two-pole design allows for easy installation and maintenance.
- Integrated indication system provides clear visual status for operational safety.
- Compact two-module size saves space in distribution boards.
- Suitable for single-phase + neutral (1Ph+N) 230V TNS systems, ensuring broad compatibility.
Compatibility
This surge protection device is compatible with single-phase plus neutral (1Ph+N) 230V TNS electrical systems and designed for installation on standard DIN rails. It supports systems requiring Type 2 (Class II) surge protection and can be integrated into modern distribution boards with up to 125 A back-up fuse protection.
Applications
- Industrial electrical distribution boards.
- Commercial building electrical systems.
- Protection of sensitive electronic equipment from transient surges.
- Power line surge protection in TNS configured systems.
- Renewable energy installations requiring surge mitigation.
Frequently Asked Questions
What type of electrical systems is this SPD suitable for?
The STPT2-40K275V-2P is designed for single-phase plus neutral (1Ph+N) 230V TNS systems.
How does the indication system work?
The device features a green indicator when operational; if the indicator is not green, the SPD should be replaced.
Can this SPD be installed on a DIN rail?
Yes, the STPT2-40K275V-2P is designed for DIN rail mounting for easy integration.
What is the maximum back-up fuse rating for this device?
The maximum back-up fuse rating is 125 A [gG].
Common Search Terms
Surge Protection Device, SPD 40kA, Type 2 Surge Protector, 230V SPD, Pluggable Surge Protector, DIN Rail SPD, Industrial Surge Protection, Power Line SPD, TNS System Surge Protector
| Manufacturer Part Number | 83020122 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297849612 |
| Height | 70mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 230V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 20Ka |
| System Type | TNS |
| Alternative Product SKU | STPT2-40K275V-2P |

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.

