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Mersen Surge Protector Type 2 SPD 2 Pole 230 Volt 20KA TNS Remote Indication
MPN: 83020123
Alt. SKU: STPT2-40K275V-2PM
This product is discontinued. Please view this replacement item.
Why Choose the STPT2-40K275V-2PM Surge Protection Device?
The STPT2-40K275V-2PM is a robust Type 2 surge protection device, engineered for single-phase+neutral (1Ph+N) 230V systems with TNS earthing. With a maximum discharge current of 40kA (8/20μs), its two-pole, pluggable design ensures efficient protection and straightforward maintenance.
This compact, two-module SPD offers reliable remote indication for status monitoring, enabling seamless system integration and fast fault identification. Ideal for safeguarding valuable industrial and commercial electrical installations against transient overvoltages.
Technical Specifications
- Item number: 83020123
- Catalogue No: STPT2-40K275V-2PM
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 1Ph+N, 230/-V, 2+0 TNS, 2 Poles, Pluggable, 2 Modules, Remote indication
- EAN/UPC Code: 8435297849209
- 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) Microswitch
- Number of Poles: 2-Pole
- Torque Rating: 3 Nm
- Housing Material: PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- MCOV L-G: 320 V
- MCOV N-G: 320 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: 0.244 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.214 kg
Product Code: 83020123
Key Benefits
- High surge current capacity of 40kA ensures robust protection against transient overvoltages.
- Pluggable two-pole design allows easy installation and maintenance.
- Remote indication feature provides real-time status monitoring for quick fault detection.
- Compact two-module size saves DIN rail space in electrical panels.
- Suitable for single-phase plus neutral 230V systems with TNS earthing configuration.
Compatibility
The STPT2-40K275V-2PM is compatible with single-phase plus neutral (1Ph+N) 230V electrical systems using TNS earthing. It fits standard DIN rail mounting and integrates seamlessly with industrial and commercial electrical installations requiring Type 2 surge protection.
Applications
- Industrial power distribution boards
- Commercial building electrical systems
- Protection of sensitive electronic equipment
- Renewable energy installations
- Data centres and telecommunications infrastructure
Frequently Asked Questions
What is the maximum discharge current of the STPT2-40K275V-2PM?
The maximum discharge current (Imax) is 40 kA (8/20μs), providing strong protection against high-energy surges.
Does this SPD support remote status indication?
Yes, it includes a green (OK) / not green (replace) microswitch for remote indication of device status.
Can this device be used in DC systems?
No, this SPD is designed for AC systems with a nominal operating voltage of 230V.
What mounting options are available?
The device is designed for DIN rail mounting, allowing easy integration into standard electrical panels.
Common Search Terms
Type 2 SPD, surge protection device, 40kA surge protector, 230V surge protector, pluggable SPD, DIN rail SPD, industrial surge protection, remote indication SPD, TNS system SPD
| Manufacturer Part Number | 83020123 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297849209 |
| 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 |
| Remote Indication | Yes |
| System Type | TNS |
| Alternative Product SKU | STPT2-40K275V-2PM |

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.

