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Mersen Surge Protector Type 1+2 SPD 2 Pole 60 Volt 20KA
MPN: 83120127
Alt. SKU: STPT12-12K75V-2PM
Why Choose the STPT12-12K75V-2PM Surge Protection Device?
The STPT12-12K75V-2PM Surge Protection Device delivers robust Type 1+2 protection with 12.5kA Iimp (10/350) capability, ensuring reliable defence for single-phase plus neutral (1Ph+N) electrical systems within TNS configurations. Its two-pole, pluggable design and compact two-module width enable straightforward installation and maintenance.
Engineered for critical industrial environments, this SPD features efficient remote indication for status monitoring and swift maintenance response. With high energy handling and durable construction, it provides dependable protection against transient overvoltages for sensitive equipment and infrastructure.
Technical Specifications
- Item number: 83120127
- Catalogue No: STPT12-12K75V-2PM
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 1Ph+N, 60/-V, 2+0 TNS, 2 Poles, Pluggable, 2 Modules, Remote indication
- EAN/UPC Code: 8435297849353
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 60
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 50 kA
- Protection Modes: L-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) Microswitch
- 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: 83120004
- Replacement Plug L-N: 83120004
- Product Width: 36 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.364 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.334 kg
Product Code: STPT12-12K75V-2PM
Key Benefits
- Provides high-level Type 1+2 surge protection with 12.5kA lightning impulse current capability.
- Compact two-module width design for space-saving installation on DIN rails.
- Pluggable two-pole format allows easy replacement and maintenance.
- Remote indication system enables quick status monitoring and reduces downtime.
- Robust construction with PA66 CT1 housing ensures durability in industrial environments.
- Compatible with TNS system configurations, protecting both line and neutral conductors.
Compatibility
This surge protection device is designed for single-phase plus neutral (1Ph+N) electrical systems configured in TNS networks. It is compatible with standard DIN rail mounting systems and supports backup fuses up to 200 A [gG]. Replacement plugs for N-PE and L-N are available under part number 83120004.
Applications
- Industrial electrical distribution boards requiring Type 1+2 surge protection.
- Protection of sensitive equipment in manufacturing and processing plants.
- Commercial buildings with TNS electrical systems.
- Infrastructure installations needing reliable transient overvoltage defence.
- Systems where remote indication of SPD status is essential for maintenance.
Frequently Asked Questions
What does Type 1+2 surge protection mean?
Type 1+2 surge protection devices provide combined protection against high-energy lightning strikes (Type 1) and switching surges (Type 2), offering comprehensive defence for electrical installations.
Can this SPD be used in three-phase systems?
No, this specific model is designed for single-phase plus neutral (1Ph+N) systems. For three-phase systems, a different SPD model suited to that configuration should be selected.
How does the remote indication system work?
The remote indication system uses a microswitch that changes state when the SPD status changes from green (OK) to non-green (replace), allowing remote monitoring of the device's condition.
What is the maximum back-up fuse rating for this device?
The maximum back-up fuse rating for the STPT12-12K75V-2PM is 200 A [gG], ensuring proper coordination and protection.
Common Search Terms
surge protection device, SPD Type 1+2, 12.5kA surge protector, pluggable SPD, industrial surge protection, DIN rail SPD, remote indication surge protector, TNS system SPD, lightning impulse current SPD, electrical transient protection
| Manufacturer Part Number | 83120127 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297849353 |
| Height | 76mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 60V |
| Maximum Continuous Voltage | 75V |
| Nominal Discharge Current | 20Ka |
| Alternative Product SKU | STPT12-12K75V-2PM |

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.

