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Mersen Surge Protector Type 2 SPD 2 Pole 48 Volt 20KA TNS
MPN: 83020128
Alt. SKU: STPT2-40K60V-2P
Why Choose the STPT2-40K60V-2P Surge Protection Device?
The STPT2-40K60V-2P Type 2 Surge Protection Device delivers robust transient overvoltage protection, capable of handling up to 40kA (Imax, 8/20µs) in single-phase TN-S systems. Designed for 1Ph+N applications, its pluggable, 2-pole configuration ensures quick installation and reliable performance in demanding electrical environments.
Engineered for durability and safety, this 2-module SPD offers high surge immunity for equipment protection, with clear status indication and efficient replaceability. Ideal for commercial and industrial settings, it helps maintain operational continuity while meeting rigorous electrical standards.
Technical Specifications
- Item number: 83020128
- Catalogue No: STPT2-40K60V-2P
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 1Ph+N, 48/-V, 2+0 TNS, 2 Poles, Pluggable, 2 Modules
- EAN/UPC Code: 8435297851097
- RoHS Compliant: Yes
- IEC SPD Type: Class II
- UL SPD Type: Type 2 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 48
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 40 kA
- Protection Modes: L-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
- Replacement Plug N-PE: 77707680
- Replacement Plug L-N: 77707680
- Product Width: 36 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.221 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.191 kg
Product Code: STPT2-40K60V-2P
Key Benefits
- High surge capacity with 40kA maximum discharge current for superior protection.
- Pluggable 2-pole design allows for easy installation and replacement.
- Clear green status indication ensures quick visual checks of device health.
- Durable PA66 CT1 housing material for long-lasting reliability.
- Suitable for 1Ph+N TN-S systems, ideal for commercial and industrial environments.
- Compact 2-module size saves space on DIN rail installations.
Compatibility
The STPT2-40K60V-2P is compatible with single-phase TN-S electrical distribution systems and designed specifically for 1Ph+N configurations. It fits standard DIN rail mounting systems and can be integrated with backup fuses up to 125 A [gG]. Replacement plugs (N-PE and L-N) are available under part number 77707680, ensuring seamless maintenance and longevity.
Applications
- Surge protection in commercial electrical distribution panels.
- Industrial machinery and equipment safeguarding.
- Protection of sensitive electronic devices in manufacturing plants.
- Building electrical infrastructure requiring Type 2 surge protection.
- Renewable energy installations with TN-S system configurations.
Frequently Asked Questions
What is the maximum surge current this device can handle?
The STPT2-40K60V-2P can handle a maximum discharge current (Imax) of 40kA (8/20µs waveform).
Is the device suitable for three-phase systems?
No, this model is designed for single-phase TN-S systems with 1Ph+N configuration.
How can I tell if the SPD needs replacement?
The device features a green indication system; if the indicator is not green, the SPD should be replaced.
What mounting options are available for this SPD?
It is designed for DIN rail mounting, making installation straightforward in standard electrical panels.
Are replacement parts available?
Yes, replacement plugs for N-PE and L-N are available under part number 77707680.
Common Search Terms
surge protection device, SPD 40kA, Type 2 surge protector, single-phase surge protector, pluggable SPD, TN-S system surge protection, 1Ph+N surge protection, DIN rail SPD, electrical transient protection, industrial surge arrester
| Manufacturer Part Number | 83020128 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851097 |
| Height | 70mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 48V |
| Maximum Continuous Voltage | 60V |
| Nominal Discharge Current | 20Ka |
| System Type | TNS |
| Alternative Product SKU | STPT2-40K60V-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.

