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Mersen Surge Protector Type 1+2 SPD 2 Pole 120 Volt 20KA TT Remote Indication
MPN: 83120113
Alt. SKU: STPT12-12K150V-2PGM
Why Choose the STPT12-12K150V-2PGM Surge Protection Device?
The Type 1+2 STPT12-12K150V-2PGM surge protection device offers robust protection for 1Ph+N TT networks, handling lightning impulse currents up to 12.5kA (Iimp, 10/350 µs) and continuous operating voltages up to 120V. With a pluggable two-pole design in a compact two-module housing, it ensures swift installation, ease of maintenance, and long-term reliability in demanding industrial and commercial environments.
Integrated remote indication capability enables seamless monitoring and integration with building management systems. Ideal for safeguarding sensitive equipment and critical infrastructure, it delivers dependable performance and enhanced safety for electrical installations exposed to transient overvoltages.
Technical Specifications
- Item number: 83120113
- Catalogue No: STPT12-12K150V-2PGM
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph+N, 120/-V, 1+1 TT, 2 Poles, Pluggable, 2 Modules, Remote indication
- EAN/UPC Code: 8435297851356
- 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 / N-PE
- System Configuration: TT, TNS
- Lightning Impulse Current (10/350) (LIMP): 12.5 kA
- Following Current (Ifi): 100 A
- 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
- Max. Back-Up Fuse: 200 A [gG]
- Housing Material: PA66 CT1
- Installation Mounting: DIN rail
- Uc (L-N): 150 V
- Uc (N-PE): 255 V
- Up at In (N-PE): ≤1,5 kV
- Up at In (L-N): ≤1 kV
- Replacement Plug N-PE: 83120006
- Replacement Plug L-N: 83120001
- Product Width: 36 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.29 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.26 kg
Product Code: 83120113
Key Benefits
- High surge current capacity with 12.5kA lightning impulse current rating for superior protection.
- Compact two-module pluggable design ensures easy installation and maintenance.
- Integrated remote indication for real-time status monitoring and enhanced safety.
- Suitable for 1Ph+N TT and TNS systems with dual protection modes (L-N / N-PE).
- Robust housing material (PA66 CT1) for durability in industrial environments.
Compatibility
This surge protection device is compatible with 1Ph+N TT and TNS electrical systems operating at nominal voltages of 120V, supporting both L-N and N-PE protection modes. It fits standard DIN rail installations and is designed to work seamlessly with backup fuses up to 200 A [gG]. Replacement plugs are available for both N-PE (83120006) and L-N (83120001) connections.
Applications
- Industrial and commercial electrical installations requiring surge protection.
- Protection of sensitive electronic equipment and control systems.
- Building management systems integration for remote monitoring.
- Electrical networks exposed to transient overvoltages and lightning strikes.
- TT and TNS system configurations in low voltage distribution.
Frequently Asked Questions
What is the maximum surge current this device can handle?
The STPT12-12K150V-2PGM can handle a lightning impulse current up to 12.5kA (10/350 µs) and a maximum discharge current (Imax, 8/20 µs) of 50 kA.
Can this SPD be used in both TT and TNS systems?
Yes, this device is designed for use in both TT and TNS system configurations.
Does the device provide remote indication?
Yes, it includes an integrated remote indication system with a green (OK) / not green (replace) microswitch for status monitoring.
What is the mounting method for this SPD?
The device is designed for DIN rail mounting, allowing easy installation in standard electrical enclosures.
Common Search Terms
surge protection device, SPD, Type 1+2 SPD, 12.5kA surge protector, 1Ph+N surge protector, TT system SPD, DIN rail surge protector, remote indication SPD, industrial surge protection, electrical transient protection
| Manufacturer Part Number | 83120113 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851356 |
| Height | 76mm |
| 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 |
| Remote Indication | Yes |
| System Type | TT |
| Alternative Product SKU | STPT12-12K150V-2PGM |

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.

