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Mersen Surge Protector Type 1+2 SPD 1 Pole 277 Volt 20KA L-N Remote Indication
MPN: 83120105
Alt. SKU: STPT12-12K320V-1PM
This product is discontinued. Please view this replacement item.
Why Choose the STPT12-12K320V-1PM Surge Protection Device?
The STPT12-12K320V-1PM offers robust Type 1+2 combined lightning and surge protection, engineered for single-phase 277V L-N applications in commercial and industrial settings. With a high discharge current rating of 12.5kA Iimp (10/350μs), this 1-pole, 1-module device ensures advanced protection against transient overvoltages at distribution board level.
Featuring a compact, pluggable design for rapid replacement, it is equipped with remote indication for efficient system monitoring and maintenance. The STPT12-12K320V-1PM is ideal for safeguarding critical equipment, ensuring system reliability and compliance with stringent safety standards.
Technical Specifications
- Item number: 83120105
- Catalogue No: STPT12-12K320V-1PM
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph, 277V, L-N, 1 Pole, Pluggable, 1 Module, Remote indication
- EAN/UPC Code: 8435297851332
- 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) Microswitch
- 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: 0.208 kg
- Sell Pack Width: 25 mm
- Sell Pack Length: 105 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.194 kg
Product Code: 83120105
Key Benefits
- High discharge current capacity of 12.5kA Iimp (10/350μs) for superior surge protection.
- Type 1+2 combined protection suitable for lightning and transient overvoltage events.
- Compact, pluggable 1-module design enables quick and easy replacement.
- Remote indication feature allows efficient monitoring and maintenance.
- Robust construction with PA66 CT1 housing ensures durability in industrial environments.
- Complies with IEC Class I+II SPD standards for reliable safety performance.
Compatibility
The STPT12-12K320V-1PM is compatible with single-phase 277V L-N electrical systems and supports TNS, TNC, and TT system configurations (only L-N). It is designed for DIN rail mounting in distribution boards and can be used with backup fuses up to 200 A [gG]. Replacement plugs such as model 83120003 are available for maintenance.
Applications
- Commercial and industrial power distribution boards.
- Protection of critical electrical and electronic equipment from lightning and surge damage.
- Single-phase 277V L-N electrical installations requiring Type 1+2 surge protection.
- Systems needing remote status indication for maintenance efficiency.
- Environments demanding compliance with IEC Class I+II surge protection standards.
Frequently Asked Questions
What is the maximum discharge current of the STPT12-12K320V-1PM?
The device has a maximum discharge current (Imax 8/20μs) rating of 50 kA, providing robust surge protection.
Can this SPD be used in three-phase systems?
No, the STPT12-12K320V-1PM is designed for single-phase 277V L-N applications only.
Does the device provide remote indication?
Yes, it features a remote indication system with a green (OK) / not green (replace) microswitch for easy status monitoring.
What mounting options are available for this SPD?
The device is designed for DIN rail mounting, simplifying installation in standard distribution boards.
Common Search Terms
surge protection device, SPD 277V, Type 1+2 SPD, lightning protection, single phase surge protector, pluggable SPD, DIN rail SPD, remote indication SPD, industrial surge protection, power line SPD
| Manufacturer Part Number | 83120105 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851332 |
| 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 |
| Remote Indication | Yes |
| System Type | L-N |
| Alternative Product SKU | STPT12-12K320V-1PM |
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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