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Mersen Surge Protector Type 1+2 SPD 3 Pole 400/690 Volt 20KA IT/TNC
MPN: 83120134
Alt. SKU: STPT12-12K440V-3P
Special Price
£227.48
£189.57
Regular Price
£303.31
Why Choose the STPT12-12K440V-3P Surge Protection Device?
Engineered for robust protection in demanding industrial and commercial environments, the STPT12-12K440V-3P Type 1+2 Surge Protection Device delivers reliable performance with a high Iimp of 12.5kA (10/350µs). Its 1-pole, 3-module pluggable design supports both IT and TNC 3-phase systems up to 400V and 690V, ensuring seamless integration and reduced downtime.
Ideal for safeguarding critical equipment against transient overvoltages, this SPD offers rapid, tool-free module replacement and compact DIN rail installation. Rely on proven surge protection and minimal maintenance for enhanced system longevity and peace of mind.
Product Code: 83120134
Key Benefits
- High surge current capacity of 12.5kA (10/350µs) for effective protection against lightning strikes and transient overvoltages.
- Pluggable 3-module design allows for quick and easy replacement, reducing downtime and maintenance effort.
- Compatible with IT and TNC 3-phase systems, supporting voltages up to 400/690V.
- Compact DIN rail mounting optimises panel space and installation efficiency.
- Visual indication system with green (OK) / not green (replace) status for immediate condition assessment.
- Robust housing material (PA66 CT1) ensures durability in industrial environments.
Compatibility
The STPT12-12K440V-3P SPD is compatible with 3-phase IT and TNC electrical systems operating at nominal voltages of 400V and 690V. It is designed for AC systems and fits standard DIN rail installations, making it suitable for a wide range of industrial and commercial electrical panels requiring Type 1+2 surge protection.
Applications
- Industrial electrical distribution boards
- Commercial building power systems
- Critical infrastructure protection
- Renewable energy installations
- Data centres and telecommunications equipment
- Manufacturing plants and automation systems
Technical Specifications
- Item number: 83120134
- Catalogue No: STPT12-12K440V-3P
- Description: Surge Protection Device Type 1+2, 12.5kA Iimp (10/350), 3Ph, -/400; -/690V, 3+0 IT; TNC, 1 Pole, Pluggable, 3 Modules.
- EAN/UPC Code: 8435297851752
- RoHS Compliant: Yes
- IEC SPD Type: Class I+II
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 400/690
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 50 kA
- Protection Modes: L-PE(N)
- System Configuration: TNC
- 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: 3-Pole
- Torque Rating: 3 Nm
- Housing Material: PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- Replacement Plug L1: 83120004
- Product Width: 54 mm
- Product Length: 76 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.564 kg
- Sell Pack Width: 63 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.525 kg
Frequently Asked Questions
What types of electrical systems is this SPD suitable for?
The STPT12-12K440V-3P is suitable for 3-phase IT and TNC systems operating at nominal voltages of 400V and 690V AC.
How does the indication system work?
The device features a visual indicator that shows green when the SPD is functioning correctly and changes colour when the module needs replacement, allowing for quick status checks.
Can the modules be replaced without tools?
Yes, the pluggable design allows for tool-free replacement of the modules, facilitating easy maintenance and reducing downtime.
What is the maximum discharge current this device can handle?
The maximum discharge current (Imax) is 50 kA (8/20µs), providing robust protection against high surge currents.
Common Search Terms
surge protection device, SPD 3-phase, Type 1+2 SPD, industrial surge protector, DIN rail SPD, pluggable surge protector, 12.5kA surge protection, electrical transient protection, TNC system SPD, IT system surge protector
| Manufacturer Part Number | 83120134 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851752 |
| Height | 76mm |
| Width | 54mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 3 Pole |
| Voltage | 400/690V |
| Maximum Continuous Voltage | 440V |
| Nominal Discharge Current | 20Ka |
| System Type | IT/TNC |
| Alternative Product SKU | STPT12-12K440V-3P |
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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