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Mersen Surge Protector Type 2+3 SPD 2 Pole 230/277 Volt 10KA TNS Remote Indication
MPN: 83230117
Alt. SKU: STPT23-20K320V-2PM
Why Choose the Surge Protection Device Type 2+3, STPT23-20K320V-2PM?
Engineered for robust protection, this Type 2+3 surge protection device offers a high discharge capacity of 20kA (Imax 8/20 µs), ensuring reliable safeguarding of single-phase systems (1Ph+N) in both 230 V and 277 V applications. Its two-pole, pluggable design enables fast installation and maintenance within TNS earthing configurations.
Compact at just two DIN modules, this SPD features remote indication for real-time status monitoring, enhancing operational safety and reducing downtime. Trust the STPT23-20K320V-2PM for effective, space-saving surge protection in industrial and commercial environments.
Technical Specifications
- Item number: 83230117
- Catalogue No: STPT23-20K320V-2PM
- Description: Surge Protection Device Type 2+3, 20kA Imax (8/20), 1Ph+N, 230/-; 277/-V, 2+0 TNS, 2 Poles, Pluggable, 2 Modules, Remote indication
- EAN/UPC Code: 8435297851028
- RoHS Compliant: Yes
- IEC SPD Type: Class II + III
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 277
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 20 kA
- Protection Modes: L-PE / N-PE
- System Configuration: TNS
- Combined Discharge Voltage (1,2/50) (Uoc): 10 kV
- 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: 63 A [gG]
- Housing Material: PA66 CT1
- MOV Response Time: ≤25
- Installation Mounting: DIN rail
- Replacement Plug L1: 83230002
- Product Width: 36 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.225 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.195 kg
Product Code: 83230117
Key Benefits
- High surge current capacity of 20 kA ensures superior protection against transient voltage spikes.
- Compact 2-module width saves valuable DIN rail space in electrical panels.
- Pluggable design allows for quick and easy installation and replacement without rewiring.
- Remote indication feature provides real-time status monitoring to reduce downtime.
- Compatible with TNS earthing systems, suitable for single-phase 230 V and 277 V applications.
Compatibility
This surge protection device is designed for use in single-phase electrical systems with TNS earthing configurations. It is compatible with 230 V and 277 V AC networks and can be integrated into industrial and commercial power distribution panels that accept DIN rail mounted pluggable SPDs.
Applications
- Industrial electrical distribution boards requiring Type 2+3 surge protection.
- Commercial buildings with sensitive electronic equipment.
- Power supply systems needing compact and reliable surge suppression.
- Electrical panels with limited space where modular design is essential.
- Systems requiring remote status indication for maintenance optimisation.
Frequently Asked Questions
What types of surges does this device protect against?
The STPT23-20K320V-2PM protects against transient surges caused by lightning strikes and switching operations, classified as IEC SPD Class II + III.
Can this SPD be used in a TN-C or TT earthing system?
No, this device is specifically designed for TNS earthing systems and may not provide optimal protection in TN-C or TT configurations.
How does the remote indication system work?
The remote indication uses a microswitch that changes state when the SPD is no longer operational, signalling maintenance personnel via a remote monitoring panel.
Is the device RoHS compliant?
Yes, the STPT23-20K320V-2PM complies with RoHS directives, ensuring it is free from hazardous substances.
Common Search Terms
Surge protection device, Type 2+3 SPD, pluggable surge protector, DIN rail SPD, 20kA surge protector, TNS surge protection, remote indication SPD, industrial surge protector, 230V surge protection, 277V surge protector.
| Manufacturer Part Number | 83230117 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851028 |
| Height | 70mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 230/277V |
| Maximum Continuous Voltage | 320V |
| Nominal Discharge Current | 10Ka |
| Remote Indication | Yes |
| System Type | TNS |
| Alternative Product SKU | STPT23-20K320V-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.

