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Mersen Surge Protector Type 2+3 SPD 4 Pole 230/400: 277/480 Volt 10KA TT
MPN: 83230129
Alt. SKU: STPT23-20K320V-4PGM
Special Price
£121.44
£101.20
Regular Price
£161.92
Why Choose the STPT23-20K320V-4PGM Surge Protection Device?
The STPT23-20K320V-4PGM is a robust Type 2+3 surge protection device, engineered for reliable safety in three-phase and neutral (3Ph+N, 3+1 TT) installations. With a maximum discharge current of 20kA (8/20µs), it delivers effective protection for power distribution systems rated at 230/400V or 277/480V.
Featuring a pluggable four-pole, four-module design and remote indication for rapid maintenance, this SPD streamlines installation while ensuring ongoing operational visibility. Ideal for commercial and industrial applications demanding high-performance surge defence and convenient status monitoring.
Product Code: 83230129
Key Benefits
- High discharge current capacity of 20kA (8/20µs) for superior surge protection
- Pluggable four-pole, four-module design simplifies installation and maintenance
- Remote indication with green/not green microswitch for easy status monitoring
- Suitable for 3Ph+N, 3+1 TT systems with voltage ratings of 230/400V and 277/480V
- Compact dimensions (72mm width, 70mm length, 90mm height) optimise space on DIN rail
- Complies with RoHS and IEC Class II + III standards ensuring safety and environmental compliance
Compatibility
This surge protection device is compatible with TT and TNS system configurations and supports protection modes L-N and N-PE. It is designed to be installed on standard DIN rails and can be used with replacement plugs 83230000 (N-PE) and 83230002 (L-N) for easy maintenance and replacement.
Applications
- Commercial power distribution boards requiring Type 2+3 surge protection
- Industrial facilities with three-phase and neutral power systems
- Buildings with 230/400V or 277/480V electrical installations
- Systems needing remote status indication for surge protection devices
- Electrical installations in TT and TNS earthing systems
Technical Specifications
- Item number: 83230129
- Catalogue No: STPT23-20K320V-4PGM
- Description: Surge Protection Device Type 2+3, 20kA Imax (8/20), 3Ph+N, 230/400; 277/480V, 3+1 TT, 4 Poles, Pluggable, 4 Modules, Remote indication
- EAN/UPC Code: 8435297849315
- RoHS Compliant: Yes
- IEC SPD Type: Class II + III
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 230/400
- 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) Microswitch
- Number of Poles: 4-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
- Uc (N-PE): 255 V
- Up at In (N-PE): ≤1,5 kV
- Up at In (L-N): ≤1,4 kV
- Replacement Plug N-PE: 83230000
- Replacement Plug L-N: 83230002
- Product Width: 72 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.394 kg
- Sell Pack Width: 78 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.35 kg
Frequently Asked Questions
What types of systems is the STPT23-20K320V-4PGM suitable for?
It is suitable for three-phase plus neutral (3Ph+N) systems with TT and TNS earthing configurations, supporting voltages of 230/400V and 277/480V.
How does the remote indication feature work?
The device includes a microswitch that changes state based on the SPD condition, allowing remote monitoring of the device status via green (OK) or not green (replace) signals.
Can I replace individual modules in the SPD?
Yes, the pluggable design allows replacement of individual modules using replacement plugs 83230000 for N-PE and 83230002 for L-N.
What is the maximum backup fuse rating for this SPD?
The maximum back-up fuse rating is 63 A [gG].
Common Search Terms
surge protection device, SPD 20kA, Type 2+3 surge protector, 3-phase surge protection, pluggable SPD, remote indication SPD, DIN rail surge protector, TT system SPD, TNS system surge protection
| Manufacturer Part Number | 83230129 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297849315 |
| Height | 70mm |
| Width | 72mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 4 Pole |
| Voltage | 230/400 and 277/480V |
| Maximum Continuous Voltage | 320V |
| Nominal Discharge Current | 10Ka |
| System Type | TT |
| Alternative Product SKU | STPT23-20K320V-4PGM |
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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