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Mersen Surge Protector Type 1+2 SPD 2 Pole 120 Volt 20KA TT
MPN: 83120112
Alt. SKU: STPT12-12K150V-2PG
Special Price
£146.12
£121.77
Regular Price
£197.72
Why Choose the Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph+N, 120/-V, 1+1 TT, 2 Poles, Pluggable, 2 Modules STPT12-12K150V-2PG?
This robust SPD offers reliable combined Type 1+2 protection against transient overvoltages and direct lightning currents, with a high 12.5kA impulse current rating (10/350 μs) for assured safety in critical low-voltage installations.
Engineered for 1-phase + neutral TT systems, it features pluggable modules for straightforward maintenance, a compact 2-module DIN-rail fit for efficient panel integration, and compliance with rigorous standards for dependable operation in industrial and commercial environments.
Product Code: 83120112
Key Benefits
- High impulse current rating of 12.5kA (10/350 μs) for superior lightning protection
- Combined Type 1+2 protection ensures comprehensive surge suppression
- Pluggable modules allow easy replacement and maintenance without system downtime
- Compact 2-module width for space-saving DIN rail installation
- Visual indication system for quick status monitoring (green = OK, not green = replace)
- Suitable for TT and TNS system configurations
- Robust PA66 CT1 housing for durable industrial use
Compatibility
This SPD is compatible with low-voltage 1-phase plus neutral TT and TNS electrical systems operating at nominal voltages of 120 V. It supports protection modes L-N and N-PE and can be integrated into panels with standard DIN rail mounting. Replacement plugs are available for both N-PE (83120006) and L-N (83120001) connections, ensuring easy maintenance and compatibility with existing setups.
Applications
- Industrial and commercial low-voltage electrical installations
- Lightning and surge protection for critical power distribution systems
- Protection of sensitive electronic equipment in TT and TNS systems
- Use in control panels, distribution boards, and switchgear assemblies
- Facilities requiring high reliability surge suppression with easy maintenance
Technical Specifications
- Item number: 83120112
- Catalogue No: STPT12-12K150V-2PG
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph+N, 120/-V, 1+1 TT, 2 Poles, Pluggable, 2 Modules
- EAN/UPC Code: 8435297851349
- 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)
- 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: 0.303 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.276 kg
Frequently Asked Questions
What types of systems is this SPD suitable for?
This SPD is designed for 1-phase plus neutral TT and TNS systems operating at 120 V nominal voltage.
Can the modules be replaced without disconnecting the entire device?
Yes, the pluggable module design allows for easy replacement and maintenance without system downtime.
What is the maximum discharge current rating?
The maximum discharge current (Imax) is 50 kA (8/20 μs waveform).
Does the device provide a visual indication of its status?
Yes, it features a green indicator when operational and signals replacement when the indicator is not green.
What is the maximum back-up fuse rating for this SPD?
The maximum back-up fuse rating is 200 A [gG].
Common Search Terms
Surge protection device, SPD Type 1+2, lightning arrester, 12.5kA surge protector, pluggable SPD, DIN rail SPD, 1-phase neutral surge protector, TT system SPD, industrial surge protection, power line SPD, transient voltage suppressor.
| Manufacturer Part Number | 83120112 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851349 |
| 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 |
| System Type | TT |
| Alternative Product SKU | STPT12-12K150V-2PG |
Write Your Own Review
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.
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