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Mersen Surge Protector Type 2 SPD 2 Pole 120 Volt 20KA TT
MPN: 83020114
Alt. SKU: STPT2-40K150V-2PG
Why Choose the STPT2-40K150V-2PG Surge Protection Device?
The Type 2 STPT2-40K150V-2PG Surge Protection Device offers robust protection for single-phase TT systems, handling surge currents up to 40kA (8/20μs) with a nominal voltage of 120V. Its pluggable, 2-pole design ensures quick installation, maintenance, and reliable protection for sensitive electrical infrastructure.
This compact, 2-module SPD features indicator windows for rapid status checks and is engineered for seamless integration into 1+1 TT configurations, providing a dependable solution to safeguard against transient overvoltages in industrial and commercial environments.
Product Code: 83020114
Key Benefits
- High surge current capacity of 40kA (8/20μs) for effective protection.
- Pluggable 2-pole design allows for easy installation and maintenance.
- Indicator windows provide quick visual status checks.
- Compact 2-module size saves panel space.
- Suitable for 1+1 TT system configurations ensuring reliable protection.
- Compliant with IEC Class II and UL Type 2 standards.
Compatibility
This surge protection device is compatible with single-phase TT and TNS electrical systems operating at a nominal voltage of 120V AC. It integrates seamlessly 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 to maintain device longevity.
Applications
- Industrial electrical panels requiring surge protection.
- Commercial buildings with sensitive electrical equipment.
- Protection of single-phase TT system infrastructures.
- Integration into 1+1 TT configurations for enhanced safety.
- Use in environments where transient overvoltage protection is critical.
Technical Specifications
- Item number: 83020114
- Catalogue No: STPT2-40K150V-2PG
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 1Ph+N, 120/-V, 1+1 TT, 2 Poles, Pluggable, 2 Modules
- EAN/UPC Code: 8435297850700
- RoHS Compliant: Yes
- IEC SPD Type: Class II
- UL SPD Type: Type 2 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 120
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 40 kA
- Protection Modes: L-N / N-PE
- System Configuration: TT, TNS
- Following Current (Ifi): 100 A
- 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
- Installation Mounting: DIN rail
- Uc (L-N): 175 V
- Uc (N-PE): 277 V
- Up at In (N-PE): ≤1,5 kV
- Up at In (L-N): ≤1 kV
- VPR L-G: 1200 V
- VPR N-G: 700 V
- VPR L-N: 700 V
- Replacement Plug N-PE: 83020000
- Replacement Plug L-N: 83020001
- Product Width: 36 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.218 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.187 kg
Frequently Asked Questions
What type of electrical systems is this SPD suitable for?
The STPT2-40K150V-2PG is designed primarily for single-phase TT and TNS systems with a nominal voltage of 120V AC.
How does the indication system work?
The device features indicator windows that show green when the SPD is functioning correctly and a different colour when replacement is needed.
Can this SPD be used in a 1+1 TT configuration?
Yes, it is specifically engineered for seamless integration into 1+1 TT system configurations.
What is the maximum backup fuse rating?
The maximum backup fuse rating for this SPD is 125 A [gG].
Common Search Terms
surge protection device, SPD 40kA, Type 2 surge protector, single-phase SPD, TT system surge protector, pluggable surge protection, electrical panel SPD, transient overvoltage protection
| Manufacturer Part Number | 83020114 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297850700 |
| Height | 70mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 120V |
| Maximum Continuous Voltage | 150V |
| Nominal Discharge Current | 20Ka |
| System Type | TT |
| Alternative Product SKU | STPT2-40K150V-2PG |

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.

