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Mersen Surge Protector Type 1+2 SPD 1 Pole 120 Volt 20KA L-N
MPN: 83120100
Alt. SKU: STPT12-12K150V-1P
Why Choose the Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph, 120V, L-N, 1 Pole, Pluggable, 1 Module STPT12-12K150V-1P?
The STPT12-12K150V-1P offers robust combined Type 1+2 surge protection for single-phase, 120V electrical systems, delivering a high impulse discharge capability of 12.5kA (10/350 μs) per pole. Engineered for maximum reliability, it effectively safeguards critical equipment against damage from direct and indirect lightning strikes as well as switching surges.
This compact, 1-module, pluggable device features a convenient L-N configuration and effortless replacement without tools, ensuring minimal downtime and maintenance. Ideal for industrial and commercial installations requiring the highest standards in surge protection performance and operational safety.
Technical Specifications
- Item number: 83120100
- Catalogue No: STPT12-12K150V-1P
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph, 120V, L-N, 1 Pole, Pluggable, 1 Module
- EAN/UPC Code: 8435297851271
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 120
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 50 kA
- Protection Modes: L - N / L-PE / N-PE
- System Configuration: TNS, TNC, TT (only L-N)
- Lightning Impulse Current (10/350) (LIMP): 12.5 kA
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace)
- Number of Poles: 1-pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 200 A [gG]
- Housing Material: PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- Replacement Plug L1: 83120001
- Product Width: 18 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.157 kg
- Sell Pack Width: 25 mm
- Sell Pack Length: 105 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.143 kg
Product Code: 83120100
Key Benefits
- High impulse discharge capacity of 12.5kA (10/350 μs) per pole for superior surge protection.
- Combined Type 1+2 protection safeguards against both direct and indirect lightning strikes.
- Compact, pluggable 1-module design enables quick and tool-free replacement.
- Green indication system for clear status monitoring and maintenance planning.
- Suitable for a variety of system configurations including TNS, TNC, and TT (L-N only).
- Robust housing material (PA66 CT1) ensures durability in industrial environments.
Compatibility
The STPT12-12K150V-1P is compatible with single-phase 120V AC electrical systems and supports protection modes L-N, L-PE, and N-PE. It is designed for installation on DIN rails and fits systems configured as TNS, TNC, and TT (L-N only). Replacement plugs are available for easy maintenance, ensuring seamless integration into existing power line surge protection setups.
Applications
- Industrial power distribution panels requiring high-level surge protection.
- Commercial buildings with sensitive electronic equipment.
- Electrical installations exposed to frequent lightning activity.
- Renewable energy systems needing robust surge protection.
- Infrastructure projects demanding compliance with IEC Class I+II standards.
Frequently Asked Questions
What does Type 1+2 surge protection mean?
Type 1+2 surge protection devices provide combined protection against high-energy surges caused by direct lightning strikes (Type 1) and lower energy surges from indirect lightning or switching events (Type 2).
Can this device be used in three-phase systems?
This model is designed specifically for single-phase 120V systems. For three-phase applications, a different SPD model suited for three poles should be selected.
Is the device easy to replace during maintenance?
Yes, the pluggable 1-module design allows for quick, tool-free replacement, minimising downtime.
What does the green indication system signify?
The green indicator shows that the device is functioning correctly. If the indicator is not green, the SPD should be replaced.
Common Search Terms
surge protection device, SPD 120V, Type 1+2 SPD, lightning surge protector, pluggable surge protector, single-phase surge protection, power line SPD, IEC Class I+II SPD, industrial surge protector, DIN rail SPD
| Manufacturer Part Number | 83120100 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851271 |
| Height | 76mm |
| Width | 18mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 1 pole |
| Voltage | 120V |
| Maximum Continuous Voltage | 150V |
| Nominal Discharge Current | 20Ka |
| System Type | L-N |
| Alternative Product SKU | STPT12-12K150V-1P |

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.

