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Mersen Surge Protector Type 2+3 SPD 4 Pole 230/400:277/480 Volt 10KA TNS
Mersen STPT23-20K320V-4PM Type 2+3 surge protection device with 20 kA discharge capacity, 320 V AC operating voltage, 4+0 TNS configuration and remote indication.
£102.00
Why Choose the Mersen STPT23-20K320V-4PM Surge Protection Device?
The Mersen 83230133 is a high performance Type 2+3 Surge Protection Device (SPD) designed to protect low voltage electrical installations from transient overvoltages caused by lightning strikes and switching events. As part of the Mersen Surge-Trap® Pluggable STPT23 Series, it combines robust surge protection with a compact pluggable design, making it ideal for commercial, industrial and automation applications.
Designed for three-phase plus neutral systems, this four-pole SPD provides reliable protection for switchboards, control panels and critical electrical equipment. The pluggable cartridges simplify servicing, while the integrated remote indication contact enables continuous monitoring of the device status for proactive maintenance.
With a maximum discharge current of 20 kA (8/20 μs), a 320 V AC continuous operating voltage (Uc) and a 4+0 TNS configuration, the Mersen 83230133 is suitable for protecting installations operating on 230/400 V AC and 277/480 V AC networks.
Key Advantages
- High performance Type 2+3 surge protection device.
- 20 kA maximum discharge current for dependable surge protection.
- 320 V AC continuous operating voltage suitable for higher voltage low voltage systems.
- Integrated remote indication for simple status monitoring.
- 4+0 TNS configuration for three-phase plus neutral installations.
- Pluggable modular design for quick maintenance and cartridge replacement.
Key Features
- Mersen Surge-Trap® Pluggable STPT23 Series.
- Model: STPT23-20K320V-4PM.
- Type 2+3 / Class II+III surge protection device.
- 20 kA Imax (8/20 μs).
- 10 kA nominal discharge current (In).
- 320 V AC continuous operating voltage (Uc).
- Four-pole 4+0 TNS configuration.
- Remote indication with pluggable cartridges.
Reliable Protection Against Electrical Surges
Surge protection devices divert damaging transient overvoltages away from connected equipment before they can cause insulation failure, electronic damage or costly downtime. Installing an SPD helps improve system reliability while extending the service life of sensitive electrical equipment.
The Mersen Surge-Trap® STPT23 Series is designed as the final stage of protection within low voltage installations where upstream Type 2 protection is already provided. It is suitable for industrial automation, commercial buildings, motor control centres, telecommunications, data centres and renewable energy applications.
Typical Applications
- Industrial control panels.
- Electrical distribution boards.
- Motor control centres.
- Automation and machinery systems.
- PLC, drive and instrumentation protection.
- Commercial buildings and critical infrastructure.
Technical Specifications
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| Voltage | 480 V | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2+3 | |
| Earthing System | TN-S | |
| Nominal Discharge Current (In) | 10 kA | |
| Remote Signal | Yes | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® Pluggable STPT23 Series | |
| Model | STPT23-20K320V-4PM | |
| SKU | 83230133 | |
| Product type | Surge Protection Device (SPD) | |
| SPD classification | Type 2+3 / Class II+III | |
| Maximum discharge current (Imax) | 20 kA (8/20 μs) | |
| Nominal Discharge Current (In) | 10 kA | |
| Combined discharge voltage (Uoc) | 10 kV | |
| Continuous operating voltage (Uc) | 320 V AC | |
| Nominal operating voltage (Un) | 230/400 V AC, 277/480 V AC | |
| System configuration | TN-S | |
| Protection modes | L-PE / N-PE | |
| Number of poles | 4 | |
| Number of modules | 4 | |
| Mounting type | DIN rail | |
| Format | Pluggable modular device | |
| Remote indication | Yes | |
| Protection rating | IP20 | |
| Short circuit withstand (ISCCR) | 25 kA | |
| Maximum back-up fuse | 63 A gG | |
| Response time | ≤25 ns | |
| Product dimensions (H × W × D) | 90 × 72 × 70 mm | |
| Product weight | Approx. 0.366 kg | |
| EAN | 8435297849346 | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83230133 used for?
It protects low voltage electrical installations and connected equipment from transient overvoltages caused by lightning strikes and switching events.
What type of surge protection device is the Mersen 83230133?
The Mersen 83230133 is a Type 2+3 / Class II+III surge protection device.
What electrical systems is this SPD suitable for?
It is designed for 230/400 V AC and 277/480 V AC three-phase plus neutral TNS systems using a 4+0 configuration.
Does the device provide remote status indication?
Yes. The integrated remote indication contact allows the surge protection device status to be monitored remotely.
Can the protection modules be replaced?
Yes. The pluggable cartridge design enables quick replacement without removing the complete base from the DIN rail.
Trusted by Electrical Professionals Worldwide
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and industrial maintenance professionals to safeguard critical electrical infrastructure against damaging transient overvoltages.
