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Mersen Surge Protector Type 2+3 SPD 2 Pole 24 Volt 3KA TT/TNS Remote Indication
MPN: 83230505
Alt. SKU: STMT23-6K30V-SP-SM
Why Choose the STMT23-6K30V-SP-SM Surge Protection Device?
This Type 2+3 Surge Protection Device provides robust 6kA Imax (8/20µs) transient suppression for single-phase (1Ph+N) TT/TN-S systems, ensuring reliable protection for sensitive equipment. Its slim monobloc design, measuring just 1 module wide, simplifies integration into compact control panels and consumer units.
Featuring remote indication for real-time status monitoring, this 2-pole SPD supports 24V/-V operation and delivers effective voltage spike mitigation. Ideal for industrial and commercial environments where space efficiency and dependable surge defence are essential.
Product Code: 83230505
Key Benefits
- High surge current capacity of 6kA Imax (8/20µs) for effective transient suppression.
- Slim monobloc design occupies only 1 module width, saving panel space.
- Remote indication via microswitch for easy status monitoring.
- Compatible with TT and TN-S systems for versatile installation.
- Robust construction with short circuit withstand rating of 10kA.
Compatibility
This surge protection device is compatible with single-phase (1Ph+N) TT and TN-S electrical distribution systems. It is designed for use in AC systems with a nominal operating voltage of 24V and supports installation on standard DIN rails, making it suitable for a wide range of industrial and commercial electrical panels.
Applications
- Industrial control panels requiring space-efficient surge protection.
- Commercial consumer units needing reliable transient voltage suppression.
- Protection of sensitive electronic equipment in TT and TN-S systems.
- Environments where remote status indication is necessary for maintenance.
- Installation in systems with up to 63A back-up fuse ratings.
Technical Specifications
- Item number: 83230505
- Catalogue No: STMT23-6K30V-SP-SM
- Description: Surge Protection Device Type 2+3, 6kA Imax (8/20), 1Ph+N, 24/-V, Slim, SP TT/TNS, 2 Poles, Monobloc, 1 Module, Remote indication
- EAN/UPC Code: 8435297850441
- RoHS Compliant: Yes
- IEC SPD Type: Class II + III
- Format: Slim Monobloc
- Nominal Operating Volt Rating (Un): 24
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 6 kA
- Protection Modes: L-N / L-PE
- System Configuration: TT, TNS
- Combined Discharge Voltage (1,2/50) (Uoc): 6 kV
- Short Circuit Withstand (ISCCR): 10 kA
- Design Details: Slim
- Indication System: Yes
- Indication System Type: Microswitch
- Number of Poles: 2-Pole
- Torque Rating: 0.7 Nm
- Max. Back-Up Fuse: 63 A [gG]
- Installation Mounting: DIN rail
- Uc (L-N): 30 V
- Up at In (N-PE): ≤0,7 kV
- Up at In (L-N): ≤0,25 kV
- Up at In (L-PE): ≤0,7 kV
- MCOV L-G: 1500 V
- MCOV L-N: 750 V
- Product Width: 18 mm
- Product Length: 65 mm
- Product Height: 85 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.091 kg
- Sell Pack Width: 24 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.068 kg
Frequently Asked Questions
What types of electrical systems is this SPD suitable for?
The STMT23-6K30V-SP-SM is suitable for single-phase TT and TN-S systems, providing protection for 1Ph+N configurations.
Does this device provide remote status indication?
Yes, it features a microswitch-based remote indication system to monitor the SPD status remotely.
What is the maximum surge current this device can handle?
It can handle a maximum discharge current (Imax) of 6 kA with an 8/20µs waveform.
How is this SPD mounted?
The device is designed for DIN rail mounting, making installation straightforward in standard electrical panels.
What is the nominal operating voltage of this SPD?
The nominal operating voltage (Un) is 24V AC.
Common Search Terms
surge protection device, SPD 6kA, Type 2+3 SPD, slim surge protector, 1 module SPD, DIN rail SPD, TT system surge protection, TN-S surge protector, remote indication SPD, industrial surge protector
| Manufacturer Part Number | 83230505 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297850441 |
| Height | 65mm |
| Width | 18mm |
| Depth | 85mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 24V |
| Maximum Continuous Voltage | 30V |
| Nominal Discharge Current | 3Ka |
| Remote Indication | Yes |
| System Type | TT/TNS |
| Alternative Product SKU | STMT23-6K30V-SP-SM |

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.

