ABB OVR T2-T3 1N 20-275 P QS is a pluggable combined Type 2 and Type 3 surge protective device with 20 kA maximum discharge current, 5 kA nominal discharge current and 275 V AC maximum continuous operating voltage for 230 V TN-S and TT installations.
SKU:2CTB803972R1200MPN:2CTB803972R1200
Price
List Price£192.09ex VAT
Your Price (ex VAT)
£192.09
Manufacturer Lead TimeEstimated Delivery 4 - 5 Days
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Why Choose the ABB OVR T2-T3 1N 20-275 P QS Surge Protective Device?
The ABB OVR T2-T3 1N 20-275 P QS is a compact and reliable combined Type 2 and Type 3 surge protective device (SPD) designed to protect single-phase low-voltage electrical installations and sensitive equipment against transient overvoltages. As part of the ABB OVR QuickSafe surge protection range, it provides coordinated surge protection for applications where a low residual voltage is required close to sensitive electrical and electronic equipment.
Designed for TN-S and TT 230 V AC single-phase plus neutral networks, the OVR T2-T3 1N 20-275 P QS features a 1+1 protection configuration. It provides a maximum discharge current of 20 kA and a nominal discharge current of 5 kA using the 8/20 µs waveform, while its Type 3 capability provides additional protection against voltage surges close to connected equipment.
With a maximum continuous operating voltage of 275 V AC and a voltage protection level of 1.4 kV, this pluggable SPD is well suited to distribution boards, control panels and installations supplying sensitive electronic loads. Its replaceable cartridges, mechanical status indication and compact DIN-rail format simplify installation, inspection and maintenance.
Key Advantages
Combined Type 2 and Type 3 surge protection in a compact device.
Designed for 230 V AC TN-S and TT single-phase networks.
20 kA maximum discharge current using an 8/20 µs waveform.
5 kA nominal discharge current for dependable surge suppression.
275 V AC maximum continuous operating voltage.
Low 1.4 kV voltage protection level helps protect sensitive equipment.
Pluggable cartridges simplify replacement and maintenance.
Mechanical status indication allows rapid visual inspection.
Compact DIN-rail construction occupies only two modular spaces.
Key Features
ABB OVR T2-T3 QuickSafe series.
Type 2 + Type 3 surge protective device.
1+1 phase and neutral protection configuration.
Suitable for TN-S and TT networks.
20 kA maximum discharge current Imax.
5 kA nominal discharge current In.
2 kA impulse current Iimp using a 10/350 µs waveform.
1.4 kV voltage protection level Up.
275 V AC maximum continuous operating voltage Uc.
Pluggable phase and neutral cartridges for convenient servicing.
Mechanical operating-status indicators.
DIN-rail mounting for modular electrical distribution equipment.
Combined Type 2 and Type 3 Surge Protection
Combined Type 2 and Type 3 SPDs provide both distribution-level surge protection and additional fine protection for sensitive downstream equipment. As a Type 2 device, the ABB OVR T2-T3 1N 20-275 P QS safely discharges surge currents characterised by an 8/20 µs waveform and can be coordinated with upstream Type 1 or Type 2 surge protective devices.
Its Type 3 characteristics make the device particularly suitable for installation close to sensitive electrical and electronic equipment. The combination of a low voltage protection level, pluggable cartridges and compact DIN-rail construction provides a practical solution for protecting modern electronic loads in residential, commercial and industrial installations.
Typical Applications
Single-phase 230 V distribution boards.
TN-S and TT low-voltage electrical systems.
Residential and commercial electrical installations.
Industrial control and automation panels.
Protection of sensitive electronic equipment.
Building automation and control systems.
Sub-distribution boards located close to sensitive loads.
Technical Specifications
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Impulse Current Iimp (kA)
2 kA
Series
OVR T2-T3 QuickSafe
ABB order code
2CTB803972R1200
EAN
3660308519689
Product group
Surge Protection Devices
Product type
Combined Type 2 + Type 3 surge protective device
SPD classification
Type 2 + Type 3
Standards
IEC 61643-11 / EN 61643-11
Protected lines
1+1
Network systems
TN-S / TT
Nominal voltage Un
230 V AC
Maximum continuous operating voltage Uc
275 V AC
Maximum discharge current Imax (8/20 µs)
20 kA
Nominal discharge current In (8/20 µs)
5 kA
Impulse current Iimp (10/350 µs)
2 kA
Voltage protection level Up
1.4 kV
Short-circuit withstand capability Isccr
100 kA
Maximum backup circuit breaker
125 A, curve B or C
Maximum backup fuse
125 A gG / gL
Cartridge type
Pluggable
Phase replacement cartridge
OVR T2-T3 20-275 C QS
Phase cartridge order code
2CTB803876R1200
Neutral replacement cartridge
OVR T2-T3 N 80-275 C QS
Neutral cartridge order code
2CTB803876R0000
Status indication
Mechanical indicators
Protection rating
IP20
Operating temperature
-40 to +80 °C
Mounting type
DIN rail
Modular width
2 modules
Dimensions (H × W × D)
88 × 35.6 × 65.3 mm
Weight
0.24 kg
Frequently Asked Questions
What is the ABB OVR T2-T3 1N 20-275 P QS used for?
It is a combined Type 2 and Type 3 surge protective device designed to protect 230 V single-phase TN-S and TT electrical installations and sensitive connected equipment against transient overvoltages.
What is the maximum discharge current of this SPD?
The OVR T2-T3 1N 20-275 P QS has a maximum discharge current Imax of 20 kA using an 8/20 µs waveform.
What is the nominal discharge current?
The device has a nominal discharge current In of 5 kA using an 8/20 µs waveform.
What voltage is the OVR T2-T3 1N 20-275 P QS designed for?
It is designed for 230 V AC TN-S and TT networks and has a maximum continuous operating voltage Uc of 275 V AC.
Can the surge protection cartridges be replaced?
Yes. The OVR T2-T3 1N 20-275 P QS has a pluggable construction with replaceable phase and neutral cartridges, simplifying maintenance without replacing the complete DIN-rail base assembly.
Trusted ABB Surge Protection Technology
ABB OVR T2-T3 QuickSafe surge protective devices combine distribution-level surge protection, fine protection for sensitive equipment and practical pluggable construction for dependable protection of modern low-voltage electrical installations.
Impulse Current Iimp (kA)
2 kA
Series
OVR T2-T3 QuickSafe
ABB order code
2CTB803972R1200
EAN
3660308519689
Product group
Surge Protection Devices
Product type
Combined Type 2 + Type 3 surge protective device
SPD classification
Type 2 + Type 3
Standards
IEC 61643-11 / EN 61643-11
Protected lines
1+1
Network systems
TN-S / TT
Nominal voltage Un
230 V AC
Maximum continuous operating voltage Uc
275 V AC
Maximum discharge current Imax (8/20 µs)
20 kA
Nominal discharge current In (8/20 µs)
5 kA
Impulse current Iimp (10/350 µs)
2 kA
Voltage protection level Up
1.4 kV
Short-circuit withstand capability Isccr
100 kA
Maximum backup circuit breaker
125 A, curve B or C
Maximum backup fuse
125 A gG / gL
Cartridge type
Pluggable
Phase replacement cartridge
OVR T2-T3 20-275 C QS
Phase cartridge order code
2CTB803876R1200
Neutral replacement cartridge
OVR T2-T3 N 80-275 C QS
Neutral cartridge order code
2CTB803876R0000
Status indication
Mechanical indicators
Protection rating
IP20
Operating temperature
-40 to +80 °C
Mounting type
DIN rail
Modular width
2 modules
Dimensions (H × W × D)
88 × 35.6 × 65.3 mm
Weight
0.24 kg
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