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Mersen Surge Protector Type 2 SPD 2 Pole 230/400 Volt 20KA IT Remote Indication
MPN: 83020127
Alt. SKU: STPT2-40K440V-2PM
This product is discontinued. Please view this replacement item.
Why Choose the STPT2-40K440V-2PM Surge Protection Device?
The STPT2-40K440V-2PM is a reliable Type 2 surge protection device, designed for 1Ph+N, 230/- and 400/-V systems, suitable for both IT and TNS earthing arrangements. With a robust 40kA Imax (8/20 μs) rating, it provides effective transient overvoltage protection for sensitive equipment in industrial and commercial installations.
Engineered with two pluggable poles and remote indication capabilities, this compact 2-module SPD allows swift maintenance and real-time status monitoring. Its high-performance design ensures maximum system uptime and compliance with modern electrical standards.
Technical Specifications
- Item number: 83020127
- Catalogue No: STPT2-40K440V-2PM
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 1Ph+N, 230/-; 400/-V, 2+0 IT; TNS, 2 Poles, Pluggable, 2 Modules, Remote indication
- EAN/UPC Code: 8435297849391
- RoHS Compliant: Yes
- IEC SPD Type: Class II
- UL SPD Type: Type 2 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 400
- 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
- VPR L-G: 1500 V
- VPR L-L: 3000 V
- Replacement Plug L1: 83020004
- Product Width: 36 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.256 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.225 kg
Product Code: 83020127
Key Benefits
- High surge current capacity of 40kA ensures robust protection against transient overvoltages.
- Pluggable design with two poles allows for easy installation and maintenance.
- Remote indication feature enables real-time monitoring of device status.
- Suitable for both IT and TNS earthing systems, providing versatile application.
- Compact 2-module size saves panel space while delivering reliable protection.
- Compliance with IEC Class II and UL Type 2 standards ensures quality and safety.
Compatibility
The STPT2-40K440V-2PM is compatible with 1-phase plus neutral electrical systems operating at 230V and 400V. It is designed for use in IT and TNS earthing configurations and is suitable for DIN rail mounting in industrial and commercial electrical panels.
Applications
- Industrial power distribution boards
- Commercial building electrical installations
- Protection of sensitive electronic equipment and control systems
- Renewable energy systems requiring surge protection
- Data centres and telecommunications infrastructure
Frequently Asked Questions
What does the 40kA Imax rating mean?
The 40kA Imax rating indicates the maximum surge current the device can safely withstand during a transient event without damage, measured with an 8/20 μs waveform.
Can this device be used in a three-phase system?
This particular model is designed for single-phase plus neutral (1Ph+N) systems. For three-phase systems, a different SPD model should be selected.
How does the remote indication feature work?
The remote indication uses a microswitch that changes state when the SPD needs replacement, allowing remote monitoring of the device's operational status.
Is the device suitable for outdoor installations?
The SPD is intended for installation within electrical panels and enclosures; appropriate IP-rated housings should be used for outdoor environments.
Common Search Terms
surge protector, type 2 SPD, 40kA surge protection, pluggable surge device, DIN rail SPD, remote indication SPD, 1Ph+N surge protection, industrial surge protector
| Manufacturer Part Number | 83020127 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297849391 |
| Height | 70mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 230/400V |
| Maximum Continuous Voltage | 440V |
| Nominal Discharge Current | 20Ka |
| Remote Indication | Yes |
| System Type | IT |
| Alternative Product SKU | STPT2-40K440V-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.

