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2TAM923100R3401 ABB eOVR T2-T3 3N 20-275 Type 2+3 Digital Surge Protective Device
ABB 2TAM923100R3401 eOVR T2-T3 3N 20-275 is a digital combined Type 2 and Type 3 3+1 surge protective device for 230/400 V AC TT and TN-S systems with 20 kA maximum discharge current, 275 V AC maximum continuous operating voltage and Modbus RTU connectivity.
£526.71
Why Choose the ABB eOVR T2-T3 3N 20-275 Surge Protective Device?
The ABB eOVR T2-T3 3N 20-275, order code 2TAM923100R3401, is a digital combined Type 2 and Type 3 surge protective device (SPD) designed to protect three-phase low-voltage electrical installations and sensitive equipment against transient overvoltages. Part of ABB’s eOVR digital surge protection range, it combines coordinated surge protection with connected monitoring capabilities for modern commercial, building and industrial electrical systems.
Designed for 230/400 V AC TT and TN-S networks, the eOVR T2-T3 3N 20-275 uses a 3+1 protection configuration. It provides a maximum discharge current Imax of 20 kA using an 8/20 µs waveform, a nominal discharge current In of 5 kA and a combination-wave open-circuit voltage Uoc of 6 kV, providing Type 2 and Type 3 protection within a single device.
With a maximum continuous operating voltage Uc of 275 V AC and a voltage protection level Up of 0.9 kV L-N and 1.4 kV N-PE at nominal discharge current, the device provides low residual voltage for downstream equipment protection. Digital connectivity via Modbus RTU enables device information to be integrated with ABB InSite energy management, supporting remote monitoring and predictive maintenance.
Key Advantages
- Combined Type 2 and Type 3 surge protection in a single device.
- 3+1 configuration designed for three-phase systems with neutral.
- 20 kA maximum discharge current Imax using an 8/20 µs waveform.
- 5 kA nominal discharge current In for effective transient overvoltage protection.
- Suitable for 230/400 V AC TT and TN-S networks.
- Modbus RTU digital connectivity supports monitoring through ABB InSite.
Key Features
- ABB eOVR digital surge protection series.
- Combined Type 2 + Type 3 SPD.
- 3+1 protected-line configuration.
- 20 kA maximum discharge current Imax at 8/20 µs.
- 5 kA nominal discharge current In at 8/20 µs.
- 6 kV open-circuit voltage Uoc.
- 230/400 V AC nominal system voltage.
- 275 V AC maximum continuous operating voltage Uc.
- 0.9 kV L-N voltage protection level Up at nominal discharge current.
- Pluggable cartridge construction with integrated status indication.
- Digital monitoring through Modbus RTU and ABB InSite.
Digital Type 2 and Type 3 Surge Protection
Combined Type 2 and Type 3 SPDs provide coordinated protection against transient overvoltages while delivering a low voltage protection level for sensitive downstream equipment. The ABB eOVR T2-T3 3N 20-275 combines an 8/20 µs surge discharge capability with Type 3 combination-wave performance, making it suitable for installations where effective protection is required close to sensitive electrical and electronic loads.
The eOVR range adds digital connectivity to surge protection. Through Modbus RTU communication, device information can be integrated into the ABB InSite energy management environment, enabling remote visibility and supporting predictive maintenance strategies for the electrical installation.
Typical Applications
- Commercial building electrical distribution systems.
- Industrial low-voltage distribution boards.
- Three-phase 230/400 V AC TT networks.
- Three-phase 230/400 V AC TN-S networks.
- Protection of sensitive electrical and electronic equipment.
- Building automation and control systems.
- Connected electrical installations using ABB InSite monitoring.
Technical Specifications
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| Remote Signal | No | |
|---|---|---|
| Device Type | Surge protection device | |
| SPD Type | Type 2+3 | |
| Poles | 3-pole + N | |
| Earthing System | TN-S, TT | |
| Series | eOVR Digital SPDs | |
| Order code | 2TAM923100R3401 | |
| Product type | Digital combined Type 2 and Type 3 surge protective device | |
| SPD classification | Type 2 + Type 3 / Class II + III | |
| Protected lines | 3+1 | |
| System network | TT / TN-S | |
| Nominal system voltage Un | 230/400 V AC | |
| Maximum continuous operating voltage Uc | 275 V AC | |
| Nominal discharge current In (8/20 µs) | 5 kA | |
| Maximum discharge current Imax (8/20 µs) | 20 kA | |
| Open-circuit voltage Uoc | 6 kV | |
| Voltage protection level Up at In | 0.9 kV L-N / 1.4 kV N-PE / 1.4 kV L-PE | |
| Response time | <25 ns | |
| Residual current IPE | <10 µA | |
| Short-circuit withstand capability Isccr | 100 kA | |
| Maximum backup fuse | 125 A | |
| Supply frequency | 45–65 Hz | |
| Protection rating | IP20 | |
| Operating temperature | -40 to +80 °C | |
| Dimensions (H × W × D) | 88 × 71.2 × 65.3 mm | |
| Digital communication | Modbus RTU | |
| Monitoring platform | ABB InSite | |
| Standard | IEC 61643-11 / EN 61643-11 |
Frequently Asked Questions
What is the ABB eOVR T2-T3 3N 20-275 used for?
The ABB eOVR T2-T3 3N 20-275 is a combined Type 2 and Type 3 surge protective device designed to protect three-phase low-voltage installations and sensitive equipment against transient overvoltages.
What is the maximum discharge current of the ABB 2TAM923100R3401?
The eOVR T2-T3 3N 20-275 has a maximum discharge current Imax of 20 kA using an 8/20 µs waveform and a nominal discharge current In of 5 kA.
What voltage system is the ABB eOVR T2-T3 3N 20-275 designed for?
The device is designed for 230/400 V AC TT and TN-S systems and has a maximum continuous operating voltage Uc of 275 V AC.
What is the voltage protection level of the ABB 2TAM923100R3401?
At nominal discharge current, the device has a voltage protection level Up of 0.9 kV L-N, 1.4 kV N-PE and 1.4 kV L-PE.
Does the ABB eOVR T2-T3 3N 20-275 support digital monitoring?
Yes. The digital eOVR SPD supports Modbus RTU communication, allowing device information to be monitored through the ABB InSite energy management platform.
Trusted Surge Protection from ABB
ABB eOVR digital surge protective devices combine effective transient overvoltage protection with connected monitoring capabilities for modern commercial, building and industrial low-voltage electrical installations.
