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Mersen Surge Protector Type 1 SPD 1 Pole 400 Volt 50KA L-N
MPN: 83010107
Alt. SKU: STMT1-50K440V-1P
Special Price
£197.33
£164.44
Regular Price
£263.10
Why Choose the STMT1-50K440V-1P Surge Protection Device?
The STMT1-50K440V-1P offers robust Type 1 surge protection with 50kA Iimp (10/350) capability, ensuring reliable defence against high-energy transients at main distribution boards in single-phase, 400V installations. Its monobloc, 1-pole design in a compact 2-module format simplifies DIN rail mounting and streamlines panel integration.
Engineered for maximum safety with L-N protection, this SPD is ideal for critical industrial and commercial applications, delivering dependable operation and minimising downtime from surges due to lightning or switching events.
Technical Specifications
- Item number: 83010107
- Catalogue No: STMT1-50K440V-1P
- Description: Surge Protection Device Type 1, 50kA Iimp (10/350), 1Ph, 400V, L-N, 1 Pole, Monobloc, 2 Modules
- EAN/UPC Code: 8435297859338
- RoHS Compliant: Yes
- IEC SPD Type: Class I
- Format: Monobloc
- Nominal Operating Volt Rating (Un): 400
- AC or DC: AC
- Protection Modes: L - N / L-PE / N-PE
- System Configuration: TNS, TNC, TT (only L-N)
- Lightning Impulse Current (10/350) (LIMP): 50 kA
- Following Current (Ifi): 50 kA
- Short Circuit Withstand (ISCCR): 50 kA
- Number of Poles: 1-pole
- Torque Rating: 3 Nm
- Max. Back-Up Fuse: 500 A [gG]
- MOV Response Time: ≤50
- Installation Mounting: DIN rail
- Product Width: 36 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.283 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.253 kg
Product Code: 83010107
Key Benefits
- High surge current capacity of 50kA (10/350 µs) for superior protection against lightning strikes.
- Compact 2-module monobloc design enables easy DIN rail mounting and space-saving installation.
- Reliable L-N protection mode suitable for single-phase 400V systems.
- Compliance with IEC Class I standards ensures robust and tested surge protection performance.
- Low MOV response time (≤50 ns) minimises transient voltage impact on connected equipment.
- Supports multiple system configurations including TNS, TNC, and TT (L-N only).
- High short circuit withstand rating (50 kA) ensures device durability under fault conditions.
Compatibility
The STMT1-50K440V-1P is compatible with single-phase 400V AC electrical systems, including TNS, TNC, and TT configurations (L-N protection only). It is designed for integration into main distribution boards equipped with DIN rail mounting systems and can be used alongside standard backup fuses up to 500 A [gG].
Applications
- Industrial main distribution boards requiring Type 1 surge protection.
- Commercial buildings with single-phase 400V power systems.
- Facilities exposed to frequent lightning activity or electrical switching surges.
- Critical infrastructure installations needing reliable surge protection to minimise downtime.
- Renewable energy systems with single-phase AC distribution.
Frequently Asked Questions
What is the maximum surge current this device can handle?
The STMT1-50K440V-1P can handle a lightning impulse current (10/350 µs) of up to 50 kA, providing high-level surge protection.
Can this SPD be used in three-phase systems?
This device is designed specifically for single-phase (1P) 400V systems. For three-phase applications, a suitable multi-pole SPD should be selected.
How is the device installed?
The SPD is mounted on a standard DIN rail within the distribution board, making installation straightforward and secure.
Is this SPD RoHS compliant?
Yes, the STMT1-50K440V-1P is fully RoHS compliant, ensuring it meets environmental and safety standards.
Common Search Terms
Type 1 surge protection device, 50kA SPD, single-phase surge protector, 400V SPD, DIN rail surge protection, industrial surge protector, lightning surge arrester, monobloc SPD, power line SPD, Class I surge protector.
| Manufacturer Part Number | 83010107 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297859338 |
| Manufacturer | Mersen |
| Number of Poles | 1 pole |
| Voltage | 400V |
| Maximum Continuous Voltage | 440V |
| Nominal Discharge Current | 50Ka |
| System Type | L-N |
| Alternative Product SKU | STMT1-50K440V-1P |
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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