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Mersen Surge Protector Type 1+2 SPD 4 Pole 120/208 Volt 20KA TT
MPN: 83120136
Alt. SKU: STPT12-12K150V-4PG
Special Price
£330.36
£275.30
Regular Price
£440.47
Why Choose the STPT12-12K150V-4PG Surge Protection Device?
The STPT12-12K150V-4PG combines Type 1+2 protection with a robust 12.5kA Iimp (10/350) capability, ensuring reliable safeguarding of 3-phase + neutral, 120/208V 3+1 TT electrical systems against both direct lightning impulses and transient overvoltages. Designed for demanding commercial and industrial environments, it delivers compliance and high resilience across a wide range of installations.
With its 4-pole pluggable format, fast replacement and easy maintenance are ensured, minimising downtime. The compact 4-module housing streamlines integration into modern panels, while the advanced surge protection enhances operational safety and equipment lifespan across critical systems.
Product Code: 83120136
Key Benefits
- High surge current capacity of 12.5kA (10/350 µs) for superior lightning protection
- Type 1+2 classification ensures comprehensive protection against direct and indirect surges
- 4-pole pluggable design allows for quick and easy replacement, reducing downtime
- Compact 4-module housing for efficient panel integration
- Visual indication system (green/replace) for easy status monitoring
- Suitable for 3-phase + neutral TT and TNS systems at 120/208V
- Robust construction with PA66 CT1 housing for durability in industrial environments
Compatibility
This surge protection device is compatible with 3-phase + neutral electrical systems configured as TT or TNS, operating at nominal voltages of 120/208V AC. It is designed for use in commercial and industrial installations requiring Type 1+2 surge protection and can be mounted on standard DIN rails for easy integration into existing switchgear and control panels.
Applications
- Commercial and industrial electrical distribution panels
- Buildings with 3-phase + neutral TT or TNS power systems
- Protection of sensitive electrical and electronic equipment from transient overvoltages
- Lightning-prone areas requiring high impulse current capacity
- Renewable energy installations and critical infrastructure
Technical Specifications
- Item number: 83120136
- Catalogue No: STPT12-12K150V-4PG
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 3Ph+N, 120/208V, 3+1 TT, 4 Poles, Pluggable, 4 Modules
- EAN/UPC Code: 8435297851509
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 120/208
- 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: 4-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: 72 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.555 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.51 kg
Frequently Asked Questions
What types of electrical systems is this SPD suitable for?
The STPT12-12K150V-4PG is suitable for 3-phase + neutral TT and TNS systems operating at 120/208V AC.
How does the indication system work?
The device features a green indicator showing normal operation. If the indicator is not green, it signals that the SPD needs replacement.
Can this SPD be mounted on a DIN rail?
Yes, the product is designed for easy DIN rail mounting in electrical panels.
What is the maximum discharge current rating?
The maximum discharge current (Imax) is rated at 50 kA (8/20 µs waveform).
Are replacement plugs available for this device?
Yes, replacement plugs are available: 83120006 for N-PE and 83120001 for L-N connections.
Common Search Terms
surge protection device, SPD, Type 1+2 SPD, 12.5kA surge protector, 3-phase surge protector, pluggable SPD, DIN rail SPD, lightning protection device, 120/208V surge protector, industrial surge protection
| Manufacturer Part Number | 83120136 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851509 |
| Height | 76mm |
| Width | 72mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 120/208V |
| Maximum Continuous Voltage | 150V |
| Nominal Discharge Current | 20Ka |
| System Type | TT |
| Alternative Product SKU | STPT12-12K150V-4PG |
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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