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Mersen Surge Protector Type 2 SPD 4 Pole 120/208 Volt 20KA TNS Remote Indication
MPN: 83020151
Alt. SKU: STPT2-40K150V-4PM
Why Choose the STPT2-40K150V-4PM Surge Protection Device?
Engineered for critical three-phase TN-S systems, the STPT2-40K150V-4PM offers robust secondary protection with a maximum discharge current of 40kA (8/20) across a 120/208V network. Its pluggable, four-pole, four-module architecture streamlines installation and maintenance, minimising system downtime.
Remote indication enables advanced monitoring and fast fault identification, ensuring ongoing equipment safety and compliance. Rely on this Type 2 SPD for cost-effective, high-performance surge mitigation in demanding industrial and commercial environments.
Technical Specifications
- Item number: 83020151
- Catalogue No: STPT2-40K150V-4PM
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 3Ph+N, 120/208V, 4+0 TNS, 4 Poles, Pluggable, 4 Modules, Remote indication
- EAN/UPC Code: 8435297851165
- RoHS Compliant: Yes
- IEC SPD Type: Class II
- UL SPD Type: Type 2 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 120/208
- 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: 4-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-G: 700 V
- VPR L-L: 1200 V
- VPR N-G: 700 V
- VPR L-N: 1200 V
- Replacement Plug N-PE: 77707653
- Replacement Plug L-N: 77707653
- Product Width: 72 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.416 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.371 kg
Product Code: STPT2-40K150V-4PM
Key Benefits
- High surge current capacity with 40kA maximum discharge current ensures reliable protection against transient overvoltages.
- Pluggable four-pole, four-module design simplifies installation, maintenance, and replacement, reducing downtime.
- Remote indication feature allows for real-time monitoring and quick fault detection, enhancing system safety.
- Compact DIN rail mounting with robust PA66 CT1 housing for easy integration into existing electrical panels.
- Compliant with IEC Class II and UL Type 2 standards for assured quality and performance.
Compatibility
The STPT2-40K150V-4PM is designed specifically for three-phase TN-S systems operating at 120/208V. It is compatible with systems requiring Type 2 surge protection devices and supports connection modes L-PE and N-PE. Suitable for integration with backup fuses up to 125 A [gG] and DIN rail mounting configurations.
Applications
- Industrial three-phase power distribution systems
- Commercial electrical installations requiring surge protection
- Critical infrastructure with sensitive electronic equipment
- Manufacturing plants and processing facilities
- Data centres and telecommunications power supplies
Frequently Asked Questions
What is the maximum surge current this SPD can handle?
The STPT2-40K150V-4PM can handle a maximum discharge current (Imax) of 40 kA (8/20 µs waveform).
Does this device provide remote indication?
Yes, it includes a remote indication system with a green (OK) / not green (replace) microswitch for status monitoring.
What type of mounting does this device require?
The device is designed for DIN rail mounting, facilitating easy installation in electrical panels.
Is this SPD suitable for DC systems?
No, this model is specified for AC systems only.
Common Search Terms
Type 2 SPD, surge protection device, 40kA surge protector, three-phase surge protector, pluggable SPD, DIN rail SPD, 120/208V surge protection, remote indication SPD, industrial surge protection, TN-S system SPD
| Manufacturer Part Number | 83020151 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851165 |
| Height | 70mm |
| Width | 72mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 120/208V |
| Maximum Continuous Voltage | 150V |
| Nominal Discharge Current | 20Ka |
| Remote Indication | Yes |
| System Type | TNS |
| Alternative Product SKU | STPT2-40K150V-4PM |

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.

