2CTB804200R0100 ABB OVR T2 20-275 Surge Protective Device

Why Choose the ABB OVR T2 20-275 Surge Protective Device?

The ABB OVR T2 20-275 is a compact Type 2 surge protective device (SPD) designed to protect low-voltage electrical installations and sensitive equipment against transient overvoltages caused by indirect lightning effects and electrical switching events. As part of the ABB OVR surge protection range, it provides dependable single-pole surge protection for residential, commercial and industrial distribution systems.

The OVR T2 20-275 provides a maximum discharge current of 20 kA and a nominal discharge current of 5 kA using the standard 8/20 µs surge waveform. Its 1.0 kV voltage protection level helps limit transient voltage reaching connected equipment, supporting effective protection of electronic controls, power supplies and other sensitive electrical loads.

With a nominal voltage of 230 V AC and maximum continuous operating voltage of 275 V AC, this single-pole SPD is suitable for common low-voltage distribution applications. Its compact non-pluggable DIN-rail construction occupies only 17.8 mm of panel width, making it easy to integrate into distribution boards and electrical control panels where installation space is limited.

Key Advantages

• Reliable Type 2 protection against transient overvoltages.
• 20 kA maximum discharge current using an 8/20 µs waveform.
• 5 kA nominal discharge current for dependable surge suppression.
• Low 1.0 kV voltage protection level helps protect sensitive equipment.
• 275 V AC maximum continuous operating voltage.
• Single-pole configuration for flexible surge protection arrangements.
• Compact 17.8 mm DIN-rail width saves valuable panel space.
• Non-pluggable construction provides a simple, integrated surge protection solution.

Key Features

• ABB OVR Type 2 series.
• Type 2 surge protective device.
• Single protected pole.
• 20 kA maximum discharge current Imax.
• 5 kA nominal discharge current In.
• 1.0 kV voltage protection level Up.
• 230 V AC nominal voltage.
• 275 V AC maximum continuous operating voltage Uc.
• Designed to discharge surge currents with an 8/20 µs waveform.
• Compact non-pluggable construction.
• DIN-rail mounting for modular electrical distribution equipment.

Reliable Type 2 Surge Protection for Electrical Installations

Type 2 surge protective devices are designed to protect electrical installations and sensitive equipment against indirect surge events. The ABB OVR T2 20-275 safely discharges transient current characterised by an 8/20 µs waveform, helping prevent damaging overvoltages from reaching downstream electrical and electronic equipment.

Its combination of a 20 kA maximum discharge current, low 1.0 kV protection level and compact single-pole format makes the OVR T2 20-275 suitable for coordinated surge protection in distribution boards and control panels. The non-pluggable design provides an integrated solution for installations where a compact and straightforward Type 2 SPD is required.

Typical Applications

• Low-voltage electrical distribution boards.
• Residential and commercial electrical installations.
• Industrial electrical and control panels.
• Protection of sensitive electronic equipment.
• Building automation and control systems.
• Power supplies and electrical control equipment.
• Coordinated surge protection systems.