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Mersen Surge Protector Type 2 SPD 2 Pole 48 Volt 20KA TNS
MPN: 83020128
Alt. SKU: STPT2-40K60V-2P
Special Price
£80.41
£67.01
Regular Price
£108.82
Why Choose the Mersen STPT2-40K60V-2P Surge Protection Device?
The Mersen STPT2-40K60V-2P is a high-performance Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by lightning activity and electrical switching events. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides reliable surge protection for industrial, commercial and infrastructure electrical systems.
This surge protection device features a 40 kA maximum discharge current (Imax), 60 V AC maximum continuous operating voltage and a compact pluggable design for straightforward installation and maintenance. Its modular construction supports quick replacement of protection cartridges without disturbing the complete installation.
Designed for 48 V AC nominal systems with a 2+0 TNS configuration, the STPT2-40K60V-2P is suitable for protecting control circuits, signalling equipment, automation panels, telecommunications systems and low-voltage electrical infrastructure.
Key Advantages
- Reliable Type 2 surge protection device for low-voltage systems.
- 40 kA maximum discharge current for strong transient overvoltage protection.
- 60 V AC maximum continuous operating voltage.
- Pluggable design enables fast module replacement.
- Compact 2-pole DIN rail mounting format for control panels.
- Suitable for industrial, commercial and infrastructure applications.
Key Features
- Mersen Surge-Trap® Pluggable STPT2 Series.
- Type 2 / Class II surge protection device.
- 40 kA Imax discharge capacity using 8/20 μs waveform.
- 48 V AC nominal operating voltage.
- 60 V AC Uc maximum continuous operating voltage.
- 2+0 TNS system configuration.
- 2-pole, 2-module pluggable construction.
- Visual indication system for device status.
- DIN rail mounting for electrical distribution panels.
Technical Specifications
- Manufacturer: Mersen
- Series: Surge-Trap® Pluggable STPT2 Series - 40kA
- Model: STPT2-40K60V-2P
- Item number: 83020128
- Product type: Surge protection device
- SPD type: Type 2 / Class II
- Maximum discharge current: 40 kA Imax (8/20 μs)
- Nominal operating voltage: 48 V AC
- Maximum continuous operating voltage: 60 V AC
- System configuration: 2+0 TNS
- Protection mode: L-PE
- Number of poles: 2 poles
- Module width: 2 modules
- Format: Pluggable
- Mounting type: DIN rail
- Short circuit withstand: 25 kA
- Maximum back-up fuse: 125 A gG
- RoHS compliant: Yes
- EAN / UPC: 8435297851097
Reliable Surge Protection for Low-Voltage Installations
Type 2 surge protection devices are used within electrical distribution systems to reduce transient overvoltages before they reach sensitive connected equipment. This helps minimise electrical damage, improve system reliability and reduce unplanned downtime.
The Mersen STPT2 pluggable range is designed for practical panel installation, combining high surge discharge capability with replaceable modules and clear device status indication for simpler preventative maintenance.
Typical Applications
- Industrial control panels.
- Low-voltage distribution boards.
- Automation and signalling circuits.
- Telecommunications equipment.
- Building services and facilities systems.
- Instrumentation and process control panels.
- Electrical installations requiring 48 V AC surge protection.
Frequently Asked Questions
What is the Mersen STPT2-40K60V-2P used for?
It is used to protect low-voltage electrical installations and connected equipment against transient overvoltages caused by lightning activity and switching events.
What type of surge protection device is this?
The STPT2-40K60V-2P is a Type 2 / Class II surge protection device for electrical distribution and control systems.
What is the maximum discharge current rating?
This SPD has a 40 kA Imax maximum discharge current rating using an 8/20 μs waveform.
What voltage is this model designed for?
It is designed for 48 V AC nominal systems with a 60 V AC maximum continuous operating voltage.
How is this surge protection device installed?
The device is designed for DIN rail mounting and uses a pluggable modular format for straightforward installation and maintenance.
Trusted by Electrical Engineers Worldwide
Mersen Surge-Trap® surge protection devices are trusted by panel builders, electrical contractors and maintenance engineers to protect critical low-voltage installations from damaging transient overvoltages.
| Manufacturer Part Number | 83020128 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 8435297851097 |
| Height | 70mm |
| Width | 36mm |
| Depth | 90mm |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
| Manufacturer | Mersen |
| Number of Poles | 2 Pole |
| Voltage | 48V |
| Maximum Continuous Voltage | 60V |
| Nominal Discharge Current | 20Ka |
| System Type | TNS |
| Alternative Product SKU | STPT2-40K60V-2P |
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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