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Mersen Surge Protector Type 2+3 SPD 2 Pole 230 Volt 10KA TT/TNS
MPN: 83230510
Alt. SKU: STMT23-20K275V-SP-S
Special Price
£63.05
£52.54
Regular Price
£84.06
Why Choose the STMT23-20K275V-SP-S Surge Protection Device?
The STMT23-20K275V-SP-S offers robust surge protection for single-phase TT and TNS systems, safeguarding electrical installations with a high discharge capacity of 20kA (Imax, 8/20µs). This slim, monobloc unit fits into a single DIN module, simplifying installation while saving valuable panel space.
Engineered for reliability at 230V and complete with 2-pole coverage (1Ph+N), it combines Type 2+3 protection for downstream sensitive equipment, ensuring operational continuity and compliance with the latest UK safety standards.
Product Code: 83230510
Key Benefits
- High surge current capacity of 20kA ensures effective protection against transient overvoltages.
- Slim monobloc design occupies only 1 DIN module, optimising panel space.
- Dual protection modes (L-N / L-PE) safeguard both line to neutral and line to earth.
- Suitable for TT and TNS system configurations, providing versatile application.
- Compliance with IEC Class II + III SPD standards guarantees reliable performance.
- Easy DIN rail mounting for quick and secure installation.
Compatibility
The STMT23-20K275V-SP-S is compatible with single-phase electrical systems operating at 230V, specifically designed for TT and TNS earthing arrangements. It integrates seamlessly with standard DIN rail-mounted switchgear and distribution boards, making it suitable for a wide range of residential, commercial, and light industrial installations.
Applications
- Surge protection in residential electrical installations.
- Commercial building electrical distribution boards.
- Protection of sensitive electronic equipment downstream in TT and TNS systems.
- Panel boards requiring space-saving surge protection solutions.
- Supplementary protection in power line systems with 230V nominal voltage.
Technical Specifications
- Item number: 83230510
- Catalogue No: STMT23-20K275V-SP-S
- Description: Surge Protection Device Type 2+3, 20kA Imax (8/20), 1Ph+N, 230/-V, Slim, SP TT/TNS, 2 Poles, Monobloc, 1 Module
- EAN/UPC Code: 8435297850519
- RoHS Compliant: Yes
- IEC SPD Type: Class II + III
- Format: Slim Monobloc
- Nominal Operating Volt Rating (Un): 230
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 20 kA
- Protection Modes: L-N / L-PE
- System Configuration: TT, TNS
- Combined Discharge Voltage (1,2/50) (Uoc): 10 kV
- Short Circuit Withstand (ISCCR): 10 kA
- Design Details: Slim
- Number of Poles: 2-Pole
- Torque Rating: 0.7 Nm
- Max. Back-Up Fuse: 63 A [gG]
- Installation Mounting: DIN rail
- Uc (L-N): 275 V
- Up at In (N-PE): ≤1,4 kV
- Up at In (L-N): ≤1,4 kV
- Up at In (L-PE): ≤1,4 kV
- Product Width: 18 mm
- Product Length: 65 mm
- Product Height: 85 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.088 kg
- Sell Pack Width: 24 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.065 kg
Frequently Asked Questions
What type of electrical systems is the STMT23-20K275V-SP-S suitable for?
It is designed for single-phase TT and TNS systems operating at 230V.
How much surge current can this device handle?
The device can handle a maximum discharge current (Imax) of 20kA (8/20µs waveform).
How is the device installed?
The STMT23-20K275V-SP-S is mounted on a standard DIN rail, occupying a single DIN module width.
Does this device provide protection for both line to neutral and line to earth?
Yes, it offers protection modes for L-N and L-PE connections.
Is this surge protection device compliant with RoHS?
Yes, the STMT23-20K275V-SP-S is RoHS compliant.
Common Search Terms
Surge protection device, SPD 20kA, Type 2+3 surge protector, single phase SPD, DIN rail SPD, TT system surge protector, TNS system SPD, 230V surge protection, slim monobloc SPD, electrical panel surge protection.
| Manufacturer Part Number | 83230510 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297850519 |
| Height | 65mm |
| Width | 18mm |
| Depth | 85mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 230V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 10Ka |
| System Type | TT/TNS |
| Alternative Product SKU | STMT23-20K275V-SP-S |
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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