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Mersen Surge Protector Type 2 SPD 3 Pole 208 Volt 20KA TNC Remote Indication
MPN: 83020133
Alt. SKU: STPT2-40K150V-3PM
Why Choose the STPT2-40K150V-3PM Surge Protection Device?
The STPT2-40K150V-3PM is engineered for reliable protection of three-phase -/208V TNC systems, featuring a robust Type 2 SPD with a maximum surge current of 40kA (8/20 μs). Its three-pole, pluggable design and compact three-module form factor make installation and replacement straightforward, supporting continuous system uptime.
With integrated remote indication for status monitoring, this device delivers advanced protection and easy maintenance, ensuring critical equipment and infrastructure remain safeguarded against transient overvoltages in demanding industrial and commercial environments.
Technical Specifications
- Item number: 83020133
- Catalogue No: STPT2-40K150V-3PM
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 3Ph, -/208V, 3+0 TNC, 3 Poles, Pluggable, 3 Modules, Remote indication
- EAN/UPC Code: 8435297850922
- 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)
- System Configuration: TNC
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace) Microswitch
- Number of Poles: 3-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
- Replacement Plug N-PE: 77707664
- Replacement Plug L-N: 77707653
- Product Width: 54 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.368 kg
- Sell Pack Width: 63 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.31 kg
Product Code: STPT2-40K150V-3PM
Key Benefits
- High surge current capacity of 40kA ensures robust protection against transient overvoltages.
- Pluggable three-pole design facilitates easy installation and replacement, minimising downtime.
- Integrated remote indication allows for real-time status monitoring and maintenance alerts.
- Compact three-module form factor saves panel space in electrical installations.
- Complies with IEC Class II and UL Type 2 standards for reliable surge protection.
Compatibility
The STPT2-40K150V-3PM is designed for use with three-phase TNC electrical systems operating at 120/208V AC. It is compatible with DIN rail mounting systems and supports backup fuses up to 125 A [gG]. Replacement plugs for N-PE and L-N connections are available for maintenance and part replacement.
Applications
- Industrial power distribution panels
- Commercial building electrical systems
- Critical infrastructure surge protection
- Renewable energy installations requiring surge mitigation
- Data centres and telecommunications facilities
Frequently Asked Questions
What is the maximum surge current the STPT2-40K150V-3PM can handle?
The device can handle a maximum surge current (Imax) of 40 kA (8/20 µs waveform).
Does this SPD provide remote status indication?
Yes, it includes an integrated remote indication system using a microswitch for status monitoring.
What type of electrical system is this SPD suitable for?
It is suitable for three-phase TNC systems with a nominal operating voltage of 120/208V AC.
Can the device be mounted on a DIN rail?
Yes, the STPT2-40K150V-3PM is designed for easy DIN rail mounting.
Common Search Terms
surge protection device, SPD 40kA, three-phase surge protector, Type 2 SPD, pluggable SPD, 120/208V surge protector, industrial surge protection, remote indication SPD, DIN rail SPD, TNC system surge protector
| Manufacturer Part Number | 83020133 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297850922 |
| Height | 70mm |
| Width | 54mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 3 Pole |
| Voltage | 208V |
| Maximum Continuous Voltage | 150V |
| Nominal Discharge Current | 20Ka |
| Remote Indication | Yes |
| System Type | TNC |
| Alternative Product SKU | STPT2-40K150V-3PM |

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.

