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Mersen Surge Protector Type 1+2 SPD 2 Pole 277 Volt 20KA TNS
MPN: 83120122
Alt. SKU: STPT12-12K320V-2P
This product is discontinued. Please view this replacement item.
Why Choose the Surge Protection Device Type 1+2 STPT12-12K320V-2P?
Engineered for robust performance, the STPT12-12K320V-2P provides reliable Type 1+2 surge protection with a high impulse current rating of 12.5kA (10/350) per pole, making it ideal for safeguarding single-phase 277V TN-S installations against both direct lightning strikes and transient overvoltages.
This 2-pole, pluggable device features tool-free module exchange, compact 2-module DIN-rail design, and remote signalling capability, ensuring quick installation, easy maintenance, and seamless integration in demanding industrial and commercial environments.
Technical Specifications
- Item number: 83120122
- Catalogue No: STPT12-12K320V-2P
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph+N, 277/-V, 2+0 TNS, 2 Poles, Pluggable, 2 Modules
- EAN/UPC Code: 8435297851431
- 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-PE / N-PE
- System Configuration: TNS
- 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: 2-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 N-PE: 83120003
- Replacement Plug L-N: 83120003
- Product Width: 36 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.31 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.28 kg
Product Code: 83120122
Key Benefits
- High impulse current rating of 12.5kA (10/350) per pole for superior surge protection.
- Compact 2-module DIN-rail design saves installation space.
- Pluggable format with tool-free module exchange for easy maintenance.
- Remote signalling capability for real-time status monitoring.
- Robust housing material (PA66 CT1) ensures durability in industrial environments.
- Clear indication system with green (OK) / not green (replace) status display.
Compatibility
This device is designed for single-phase 277V TN-S electrical systems and is compatible with standard DIN rail mounting. It supports protection modes L-PE and N-PE and can be integrated with backup fuses up to 200 A [gG]. Replacement plugs (N-PE and L-N) are available under catalogue number 83120003.
Applications
- Industrial and commercial electrical installations requiring Type 1+2 surge protection.
- Protection of sensitive equipment in single-phase 277V TN-S power systems.
- Buildings exposed to direct lightning strikes or transient overvoltages.
- Electrical distribution boards with DIN rail mounting.
- Systems requiring remote signalling of surge protection status.
Frequently Asked Questions
What does Type 1+2 surge protection mean?
Type 1+2 surge protection devices provide protection against both direct lightning strikes (Type 1) and switching overvoltages or indirect lightning effects (Type 2), ensuring comprehensive safeguarding of electrical systems.
Can this device be installed on a three-phase system?
No, this specific model is designed for single-phase 277V TN-S systems with 2 poles. For three-phase systems, please select an appropriate SPD designed for that configuration.
How does the indication system work?
The device features a green indicator when operating correctly. If the indicator is not green, it signals that the module needs replacement to maintain protection effectiveness.
Is remote signalling included?
Yes, this SPD includes remote signalling capability, allowing connection to external monitoring systems for real-time status updates.
Common Search Terms
surge protection device, SPD Type 1+2, 12.5kA surge arrester, pluggable SPD, DIN rail surge protector, 277V surge protection, TN-S system SPD, industrial surge protector, remote signalling SPD
| Manufacturer Part Number | 83120122 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851431 |
| Height | 76mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 277V |
| Maximum Continuous Voltage | 320V |
| Nominal Discharge Current | 20Ka |
| System Type | TNS |
| Alternative Product SKU | STPT12-12K320V-2P |
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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