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Mersen Surge Protector Type 2+3 SPD 2 Pole 230/277 Volt 10KA TT
MPN: 83230112
Alt. SKU: STPT23-20K320V-2PG
Special Price
£56.30
£46.92
Regular Price
£75.07
Why Choose the STPT23-20K320V-2PG Surge Protection Device?
The STPT23-20K320V-2PG offers reliable Type 2+3 surge protection, designed to safeguard single-phase TT networks operating at 230/277V. With a high discharge capacity of 20kA (Imax, 8/20 μs), it effectively shields sensitive equipment from transient overvoltages and lightning-induced surges.
This compact, pluggable 2-pole unit simplifies installation and maintenance, occupying only two DIN modules. It is the ideal solution for ensuring the uninterrupted, long-term protection of critical loads in residential, commercial, and light industrial environments.
Product Code: 83230112
Key Benefits
- High surge current capacity of 20kA ensures robust protection against transient overvoltages.
- Compact pluggable design allows for easy installation and replacement on DIN rails.
- Visual indication system provides clear status monitoring for maintenance.
- Suitable for single-phase TT and TNS systems, enhancing versatility.
- Compliance with IEC Class II + III standards guarantees reliable performance.
Compatibility
The STPT23-20K320V-2PG is compatible with single-phase TT and TNS electrical systems operating at nominal voltages up to 277V AC. It fits standard DIN rail mounting systems and integrates seamlessly with existing electrical distribution boards requiring Type 2+3 surge protection.
Applications
- Residential electrical installations requiring surge protection.
- Commercial buildings with sensitive electronic equipment.
- Light industrial facilities needing reliable transient overvoltage defence.
- Protection of critical loads in power distribution panels.
Technical Specifications
- Item number: 83230112
- Catalogue No: STPT23-20K320V-2PG
- Description: Surge Protection Device Type 2+3, 20kA Imax (8/20), 1Ph+N, 230/-; 277/-V, 1+1 TT, 2 Poles, Pluggable, 2 Modules
- EAN/UPC Code: 8435297850120
- 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-N / N-PE
- System Configuration: TT, TNS
- Combined Discharge Voltage (1,2/50) (Uoc): 10 kV
- 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: 2-Pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 63 A [gG]
- Housing Material: PA66 CT1
- Installation Mounting: DIN rail
- Uc (L-N): 320 V
- Replacement Plug N-PE: 83230000
- Replacement Plug L-N: 83230002
- Product Width: 36 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.21 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.179 kg
Frequently Asked Questions
What types of electrical systems is this SPD suitable for?
The STPT23-20K320V-2PG is designed for single-phase TT and TNS systems operating at 230/277V AC.
How does the indication system work?
The device features a green indicator when operational; if the indicator is not green, it signals that the SPD needs replacement.
Can this SPD be used in three-phase systems?
No, this model is specifically designed for single-phase systems with 2 poles.
What is the maximum backup fuse rating for this device?
The maximum back-up fuse rating is 63 A [gG].
Common Search Terms
surge protection device, SPD, Type 2+3 SPD, 20kA surge protector, single-phase surge protector, DIN rail SPD, TT system surge protection, overvoltage protection, lightning surge protector, pluggable surge protector
| Manufacturer Part Number | 83230112 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297850120 |
| 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 |
| System Type | TT |
| Alternative Product SKU | STPT23-20K320V-2PG |
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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