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Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA TT Remote Indication
MPN: 83020147
Alt. SKU: STPT2-40K275V-4PGM
This product is discontinued. Please view this replacement item.
Why Choose the Surge Protection Device Type 2 STPT2-40K275V-4PGM?
Engineered for robust protection, this Type 2 SPD offers reliable surge defence up to 40kA (8/20μs), making it ideal for safeguarding three-phase+neutral (3Ph+N) TT systems operating at 230/400V. Its 4-pole, pluggable, 4-module design ensures straightforward installation, rapid replacement, and minimal downtime.
Benefit from enhanced safety and system integrity with integrated remote indication, enabling timely maintenance and fault monitoring. Designed to meet demanding industrial and commercial standards, the STPT2-40K275V-4PGM is a cost-effective solution for maintaining critical infrastructure uptime.
Technical Specifications
- Item number: 83020147
- Catalogue No: STPT2-40K275V-4PGM
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 3Ph+N, 230/400V, 3+1 TT, 4 Poles, Pluggable, 4 Modules, Remote indication
- EAN/UPC Code: 8435297849230
- RoHS Compliant: Yes
- IEC SPD Type: Class II
- UL SPD Type: Type 2 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 230/400
- AC or DC: AC
- Nominal Discharge Current (In) (8/20): 20 kA
- Max Discharge Current : Imax (8/20): 40 kA
- Protection Modes: L-N / N-PE
- System Configuration: TT, TNS
- Following Current (Ifi): 100 A
- Short Circuit Withstand (ISCCR): 25 kA
- Indication System: Yes
- Indication System Type: Green (OK) / Not green (replace) Microswitch
- Number of Poles: 4-Pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 125 A [gG]
- Housing Material: PA66 CT1
- Installation Mounting: DIN rail
- Uc (L-N): 275 V
- Uc (N-PE): 277 V
- Up at In (N-PE): ≤1,5 kV
- Up at In (L-N): ≤1,3 kV
- VPR L-G: 1500 V
- VPR L-L: 1800 V
- VPR N-G: 700 V
- VPR L-N: 900 V
- Replacement Plug N-PE: 77707664
- Replacement Plug L-N: 77707654
- Product Width: 72 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.427 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.383 kg
Product Code: STPT2-40K275V-4PGM
Key Benefits
- High surge current capacity of 40kA ensures robust protection against transient overvoltages.
- Pluggable 4-module design allows for easy installation and quick replacement, reducing downtime.
- Integrated remote indication for real-time status monitoring and proactive maintenance.
- Compatible with 3-phase plus neutral TT systems at 230/400V, suitable for various industrial applications.
- Meets IEC Class II and UL Type 2 standards, guaranteeing compliance and safety.
Compatibility
The STPT2-40K275V-4PGM is designed for use in TT and TNS system configurations with nominal operating voltages of 230/400V AC. It is compatible with systems requiring Type 2 surge protection devices and can be mounted on standard DIN rails for seamless integration into existing electrical panels.
Applications
- Industrial power distribution boards
- Commercial building electrical installations
- Renewable energy systems requiring surge protection
- Critical infrastructure and data centres
- Manufacturing facilities and process control systems
Frequently Asked Questions
What is the maximum surge current this device can handle?
The STPT2-40K275V-4PGM can handle a maximum surge current (Imax) of 40 kA (8/20μs waveform).
Can this SPD be used in TN systems?
Yes, it is compatible with both TT and TNS system configurations.
Does the device provide any indication when it needs replacement?
Yes, it features a green (OK) / not green (replace) microswitch indication system and supports remote indication for monitoring.
How is the device installed?
The SPD is designed for DIN rail mounting and has a pluggable module format for easy installation and replacement.
Common Search Terms
Surge protection device, Type 2 SPD, 40kA surge protector, 3-phase surge protector, pluggable SPD, DIN rail surge protector, remote indication SPD, industrial surge protection, TT system SPD, 230/400V surge protection
| Manufacturer Part Number | 83020147 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297849230 |
| Height | 70mm |
| Width | 72mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 230/400V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 20Ka |
| Remote Indication | Yes |
| System Type | TT |
| Alternative Product SKU | STPT2-40K275V-4PGM |

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.

