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Mersen Surge Protector Type 2 SPD 2 Pole 230 Volt 20KA TT
MPN: 83020116
Alt. SKU: STPT2-40K275V-2PG
This product is discontinued.
Please view this replacement item.
Why Choose the STPT2-40K275V-2PG Surge Protection Device?
Engineered for reliable defence against transient overvoltages, the STPT2-40K275V-2PG Type 2 SPD offers robust protection with a maximum discharge current of 40kA (8/20 μs). Its 1Ph+N, 230 V, 1+1 TT configuration and 2-pole pluggable design make it ideal for critical single-phase applications within industrial and commercial environments.
This compact, 2-module unit enables quick installation and straightforward maintenance. Compliance with the latest safety standards ensures uninterrupted operation and cost-effective safeguarding of sensitive electrical infrastructure.
Product Code: 83020116
Key Benefits
- High surge current capacity of 40kA ensures effective protection against transient overvoltages.
- Compact 2-module design allows for space-saving installation on DIN rails.
- Pluggable format facilitates easy replacement and maintenance without system downtime.
- Visual indication system (green OK / not green replace) enables quick status checks.
- Suitable for TT and TNS system configurations, enhancing versatility.
- Compliance with IEC Class II and UL Type 2 standards guarantees reliable performance.
Compatibility
The STPT2-40K275V-2PG is compatible with single-phase 230 V AC systems configured as TT or TNS. It integrates seamlessly with electrical installations requiring 2-pole surge protection devices and supports systems with maximum back-up fuse ratings up to 125 A [gG]. Replacement plugs (83020000 for N-PE and 83020002 for L-N) ensure ongoing compatibility and ease of maintenance.
Applications
- Industrial and commercial single-phase electrical installations.
- Protection of sensitive electrical and electronic equipment from transient surges.
- Use in distribution boards and control panels requiring DIN rail mounting.
- Facilities with TT and TNS earthing systems.
- Installation in environments demanding quick maintenance and status indication.
Technical Specifications
- Item number: 83020116
- Catalogue No: STPT2-40K275V-2PG
- Description: Surge Protection Device Type 2, 40kA Imax (8/20), 1Ph+N, 230/-V, 1+1 TT, 2 Poles, Pluggable, 2 Modules
- EAN/UPC Code: 8435297850724
- RoHS Compliant: Yes
- IEC SPD Type: Class II
- UL SPD Type: Type 2 Component Assembly
- Format: Pluggable
- Nominal Operating Volt Rating (Un): 230
- AC or DC: AC
- Max Discharge Current : Imax (8/20): 40 kA
- Protection Modes: L-N / N-PE
- System Configuration: TT, TNS
- 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: 125 A [gG]
- Housing Material: PA66 CT1
- Installation Mounting: DIN rail
- Uc (L-N): 275 V
- Uc (N-PE): 277 V
- Up at In (N-PE): ≤1,5 kV
- Up at In (L-N): ≤1,3 kV
- VPR L-G: 1500 V
- VPR N-G: 700 V
- VPR L-N: 900 V
- Replacement Plug N-PE: 83020000
- Replacement Plug L-N: 83020002
- Product Width: 36 mm
- Product Length: 70 mm
- Product Height: 90 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 0.223 kg
- Sell Pack Width: 42 mm
- Sell Pack Length: 117 mm
- Sell Pack Height: 90 mm
- Product group: Power Line SPDs
- Product Weight: 0.192 kg
Frequently Asked Questions
What is the maximum surge current this device can handle?
The STPT2-40K275V-2PG can handle a maximum discharge current of 40kA (8/20 μs waveform).
Is this SPD suitable for three-phase systems?
No, this device is designed for single-phase 230 V AC systems with 1Ph+N configuration.
How does the indication system work?
The device features a visual indicator that shows green when operational; if the indicator is not green, the SPD should be replaced.
Can this SPD be installed on a DIN rail?
Yes, the STPT2-40K275V-2PG is designed for easy DIN rail mounting.
Common Search Terms
surge protection device, SPD Type 2, 40kA surge protector, 230V surge protector, pluggable SPD, DIN rail SPD, single-phase surge protector, electrical transient protection, TT system SPD, TNS system surge protection
| Manufacturer Part Number | 83020116 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297850724 |
| Height | 70mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 230V |
| Maximum Continuous Voltage | 275V |
| Nominal Discharge Current | 20Ka |
| System Type | TT |
| Alternative Product SKU | STPT2-40K275V-2PG |

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.

