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Mersen Surge Protector Type 2 SPD 1 Pole 230 Volt 20KA L-N
MPN: 83020106
Alt. SKU: STPT2-40K275V-1P
This product is discontinued. Please view this replacement item.
Why Choose the STPT2-40K275V-1P Surge Protection Device?
The STPT2-40K275V-1P offers robust Type 2 surge protection for single-phase 230V applications, with a maximum discharge current (Imax) of 40kA (8/20μs). Designed to safeguard sensitive equipment from transient overvoltages, this device reliably protects installations in industrial, commercial, or residential environments.
Its compact, 1-module, pluggable design enables easy installation and maintenance within DIN rail systems. Featuring single pole (L-N) protection and replaceable cartridges, it is an ideal choice for efficient, future-proof surge protection.
Technical Specifications
- Item number: 83020106
- Catalogue No: STPT2-40K275V-1P
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 1Ph, 230V, L-N, 1 Pole, Pluggable, 1 Module
- EAN/UPC Code: 8435297850595
- 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 - N / L-PE / N-PE
- System Configuration: TNS, TNC, TT (only L-N)
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace)
- Number of Poles: 1-pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 125 A [gG]
- Housing Material: PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- VPR L-N: 900 V
- Replacement Plug L1: 83020002
- Product Width: 18 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.137 kg
- Sell Pack Width: 24 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.114 kg
Product Code: 83020106
Key Benefits
- High surge current capacity with 40kA maximum discharge current (Imax) for superior protection.
- Compact 1-module design saves DIN rail space and simplifies installation.
- Pluggable cartridge allows quick and easy replacement without rewiring.
- Visual indication system ensures easy status monitoring and maintenance.
- Compatible with multiple system configurations: TNS, TNC, and TT (L-N only).
- Robust housing material (PA66 CT1) ensures durability in industrial environments.
Compatibility
The STPT2-40K275V-1P is compatible with single-phase 230V AC power systems and supports protection modes L-N, L-PE, and N-PE. It is suitable for use in TNS, TNC, and TT system configurations (L-N only). The device is designed for DIN rail mounting and integrates seamlessly with standard electrical distribution boards.
Applications
- Industrial power distribution panels requiring Type 2 surge protection.
- Commercial buildings to protect sensitive electronic equipment.
- Residential installations for safeguarding home electrical systems.
- Renewable energy systems and photovoltaic installations.
- Data centres and telecommunications infrastructure.
Frequently Asked Questions
What is the maximum surge current this device can handle?
The STPT2-40K275V-1P can handle a maximum discharge current (Imax) of 40kA (8/20μs waveform).
Can this SPD be used in a three-phase system?
This device is designed for single-phase (1Ph) 230V systems only and is not suitable for three-phase applications.
How does the indication system work?
The device features a visual indication system: green indicates the SPD is operational, while a non-green indicator signals the need for cartridge replacement.
Is the cartridge replaceable?
Yes, the pluggable cartridge design allows for easy replacement without rewiring, improving maintenance efficiency.
Common Search Terms
surge protector, SPD Type 2, 40kA surge protection, single-phase surge device, DIN rail SPD, pluggable surge protector, 230V surge protection, electrical transient protector
| Manufacturer Part Number | 83020106 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297850595 |
| Height | 70mm |
| Width | 18mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 1 pole |
| Voltage | 230V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 20Ka |
| System Type | L-N |
| Alternative Product SKU | STPT2-40K275V-1P |

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.

