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Mersen Surge Protector Type 2+3 SPD 2 Pole 12 Volt 3KA TT/TNS
Mersen 83230500 STMT23-6K20V-SP-S Type 2+3 slim monobloc surge protection device with 6 kA discharge capacity, 20 V AC maximum continuous operating voltage and SP TT/TNS configuration.
£55.16
Why Choose the Mersen 83230500 Surge Protection Device?
The Mersen 83230500 is a compact Type 2+3 Surge Protection Device (SPD) designed to protect low voltage AC and DC electrical installations against transient overvoltages. Part of the Mersen Surge-Trap® Monobloc STMT23 Series, this slim SPD is ideal for protecting sensitive control, communication and power supply equipment where panel space is limited.
Designed for DIN rail installation, this monobloc surge protection device provides fine protection against voltage spikes caused by lightning activity, switching operations and electrical disturbances. Its slim single-module format allows easy installation in compact control panels, distribution boards and machinery cabinets.
With a maximum discharge current of 6 kA (8/20 μs), a 20 V AC maximum continuous operating voltage (Uc) and a 1 phase + neutral SP TT/TNS configuration, the Mersen 83230500 is well suited for sensitive low voltage systems requiring reliable surge protection in a compact footprint.
Key Advantages
- Compact Type 2+3 surge protection device for sensitive low voltage equipment.
- 6 kA maximum discharge current for fine surge protection.
- Slim monobloc design ideal for limited panel space.
- 1 phase + neutral configuration for TT and TNS systems.
- DIN rail mounting for straightforward panel installation.
- Suitable for control systems, power supplies and communication equipment.
Key Features
- Mersen Surge-Trap® Monobloc STMT23 Series.
- Model: STMT23-6K20V-SP-S.
- Type 2+3 / Class II+III surge protection device.
- 6 kA Imax (8/20 μs).
- 3 kA nominal discharge current (In).
- 20 V AC maximum continuous operating voltage (Uc L-N).
- Two-pole, 1Ph+N SP TT/TNS configuration.
- Slim monobloc one-module format.
Reliable Protection for Sensitive Low Voltage Equipment
Surge protection devices safely divert transient overvoltages away from connected equipment before they can cause electronic damage, insulation failure or unplanned downtime. Compact Type 2+3 devices are particularly useful where fine protection is required close to sensitive equipment.
The Mersen Surge-Trap® Monobloc STMT23 Series is designed for AC and DC voltage applications, making it suitable for control circuits, instrumentation, communication systems and compact electrical panels requiring reliable surge protection.
Typical Applications
- Control panels and machinery cabinets.
- Power supply protection.
- Communication systems.
- Instrumentation and monitoring equipment.
- Low voltage AC and DC circuits.
- Compact distribution boards with limited DIN rail space.
Technical Specifications
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| Phase | Single Phase | |
|---|---|---|
| Poles | 2-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2+3 | |
| Earthing System | TN-S, TT | |
| Nominal Discharge Current (In) | 3 kA | |
| Remote Signal | No | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® Monobloc STMT23 Series | |
| Model | STMT23-6K20V-SP-S | |
| SKU | 83230500 | |
| Product type | Surge Protection Device (SPD) | |
| SPD classification | Type 2+3 / Class II+III | |
| Maximum discharge current (Imax) | 6 kA (8/20 μs) | |
| Nominal Discharge Current (In) | 3 kA | |
| Combined voltage pulse (Uoc) | 6 kV | |
| Nominal operating voltage (Un) | 12 V AC | |
| Maximum continuous operating voltage (Uc L-N) | 20 V AC | |
| System configuration | TN-S, TT | |
| Network type | TN-S, TT | |
| Number of poles | 2 | |
| Number of modules | 1 | |
| Format | Slim monobloc | |
| Mounting type | DIN rail | |
| Protection modes | L-N / L-PE | |
| Short circuit withstand (ISCCR) | 10 kA | |
| Maximum back-up fuse | 63 A gG | |
| RoHS compliant | Yes | |
| EAN/UPC | 8435297850410 | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83230500 used for?
It is used to protect sensitive low voltage electrical equipment from transient overvoltages caused by lightning activity, switching events and electrical disturbances.
What type of surge protection device is the Mersen 83230500?
The Mersen 83230500 is a Type 2+3 / Class II+III surge protection device.
What is the maximum discharge current?
The device provides a maximum discharge current of 6 kA (8/20 μs) with a nominal discharge current of 3 kA.
What system configuration is this SPD designed for?
It is designed for 1 phase + neutral SP TT/TNS systems in low voltage AC and DC applications.
How is the Mersen 83230500 installed?
It has a slim one-module monobloc DIN rail format, making it suitable for compact electrical panels and control cabinets.
Trusted by Electrical Professionals Worldwide
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals to protect sensitive electrical systems from damaging transient overvoltages.
