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Mersen Surge Protector Type 1+2 SPD 4 Pole 230/400 Volt 20KA TT
MPN: 83120138
Alt. SKU: STPT12-12K275V-4PG
This product is discontinued. Please view this replacement item.
Why Choose the STPT12-12K275V-4PG Surge Protection Device?
Engineered for reliable protection, the STPT12-12K275V-4PG Type 1+2 SPD offers robust surge defence for 3-phase + neutral TT systems at 230/400V. With a high impulse current capability of 12.5kA (Iimp, 10/350µs), it ensures compliance with demanding installation standards and safeguards critical equipment from lightning and switching surges.
The compact, pluggable 4-pole, 4-modular design allows for fast replacement and straightforward integration into new or existing distribution boards. Ideal for industrial and commercial applications requiring superior surge protection with maximum uptime and minimal maintenance.
Technical Specifications
- Item number: 83120138
- Catalogue No: STPT12-12K275V-4PG
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 3Ph+N, 230/400V, 3+1 TT, 4 Poles, Pluggable, 4 Modules
- EAN/UPC Code: 8435297851523
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 230/400
- 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
- Housing Material: PA66 CT1
- Installation Mounting: DIN rail
- Uc (L-N): 275 V
- Uc (N-PE): 255 V
- Up at In (N-PE): ≤1,5 kV
- Up at In (L-N): ≤1,3 kV
- Replacement Plug N-PE: 83120006
- Replacement Plug L-N: 83120002
- Product Width: 72 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.681 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.648 kg
Product Code: 83120138
Key Benefits
- High impulse current capability of 12.5kA ensures robust protection against lightning surges.
- Pluggable 4-pole design allows for quick and easy replacement, reducing downtime.
- Compatible with 3-phase + neutral TT and TNS systems at 230/400V.
- Integrated indication system provides clear status for maintenance.
- Compact and modular format fits standard DIN rail mounting for easy installation.
- Complies with IEC Class I+II standards for surge protection devices.
Compatibility
The STPT12-12K275V-4PG is compatible with TT and TNS electrical system configurations operating at 230/400V AC. It supports protection modes L-N and N-PE, making it suitable for industrial and commercial distribution boards requiring Type 1+2 surge protection.
Applications
- Industrial electrical distribution boards
- Commercial building power systems
- Protection of sensitive electrical and electronic equipment
- Lightning and transient overvoltage surge protection
- Renewable energy installations requiring surge protection
Frequently Asked Questions
What type of electrical systems is this SPD suitable for?
This device is designed for TT and TNS systems with 3-phase plus neutral configurations at 230/400V AC.
How does the indication system work?
The SPD features a green indicator when operational (OK) and changes colour to indicate when the device needs replacement.
Can this SPD be replaced without rewiring?
Yes, the pluggable format allows for quick replacement without the need for rewiring, minimising downtime.
What is the maximum discharge current this device can handle?
The maximum discharge current (Imax, 8/20µs) is 50 kA, providing strong surge protection capability.
Common Search Terms
surge protection device, SPD, Type 1+2 SPD, 12.5kA surge protector, 3-phase surge protection, pluggable SPD, DIN rail SPD, industrial surge protector, lightning surge protection, 230/400V SPD
| Manufacturer Part Number | 83120138 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851523 |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 230/400V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 20Ka |
| System Type | TT |
| Alternative Product SKU | STPT12-12K275V-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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