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Mersen Surge Protector Type 1+2 SPD 1 Pole 277 Volt 20KA L-N
MPN: 83120104
Alt. SKU: STPT12-12K320V-1P
This product is discontinued. Please view this replacement item.
Why Choose the STPT12-12K320V-1P Surge Protection Device?
Engineered for robust protection, this Type 1+2 SPD safeguards single-phase systems (277V, L-N) against lightning-induced and switching surges up to 12.5kA (Iimp 10/350). Its pluggable, 1-pole, 1-module design ensures rapid installation and easy maintenance for critical industrial and commercial applications.
Ideal for main distribution boards, the STPT12-12K320V-1P delivers dependable surge protection and long-term reliability, minimising downtime and equipment damage in demanding environments.
Technical Specifications
- Item number: 83120104
- Catalogue No: STPT12-12K320V-1P
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph, 277V, L-N, 1 Pole, Pluggable, 1 Module
- EAN/UPC Code: 8435297851325
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 277
- 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: 83120003
- Product Width: 18 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.203 kg
- Sell Pack Width: 24 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.18 kg
Product Code: STPT12-12K320V-1P
Key Benefits
- High surge current capacity with 12.5kA lightning impulse current rating for superior protection.
- Pluggable 1-pole design allows for quick installation and easy replacement, reducing downtime.
- Integrated visual indication system ensures clear status monitoring for maintenance.
- Suitable for single-phase 277V AC systems, compatible with multiple system configurations.
- Robust housing and DIN rail mounting provide durability and secure installation in industrial environments.
Compatibility
The STPT12-12K320V-1P is compatible with single-phase electrical distribution systems operating at 277V (L-N). It supports TNS, TNC, and TT system configurations (L-N only) and is designed to integrate seamlessly with main distribution boards and power line surge protection setups requiring Type 1+2 SPD protection.
Applications
- Main distribution boards in commercial and industrial facilities
- Protection of sensitive electrical and electronic equipment from surge damage
- Lightning protection systems for buildings and infrastructure
- Renewable energy installations requiring reliable surge protection
- Data centres and critical power supply systems
Frequently Asked Questions
What type of surge protection does this device provide?
The STPT12-12K320V-1P provides Type 1+2 surge protection, suitable for both lightning impulse currents and switching surges in single-phase systems.
Can this SPD be used in three-phase systems?
No, this particular model is designed for single-phase systems only (277V L-N).
How does the indication system work?
The device features a green indicator when operational. If the indicator is not green, it signals that the SPD needs to be replaced.
What is the maximum backup fuse rating for this SPD?
The maximum back-up fuse rating is 200 A [gG].
Common Search Terms
Type 1+2 SPD, surge protection device 277V, pluggable surge protector, single-phase SPD, lightning surge protector, industrial surge protection, DIN rail SPD, 12.5kA surge protector, power line SPD, STPT12-12K320V-1P
| Manufacturer Part Number | 83120104 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851325 |
| Height | 76mm |
| Width | 18mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 1 pole |
| Voltage | 277V |
| Maximum Continuous Voltage | 320V |
| Nominal Discharge Current | 20Ka |
| System Type | L-N |
| Alternative Product SKU | STPT12-12K320V-1P |
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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