ABB OVR T2 3L 40-275 P QS scaricatore di sovratensione Tipo 2 2CTB803873R2400

Type 2 surge protective device with 3 poles plus neutral, engineered for 275 V AC systems and capable of discharging up to 40 kA (8/20 µs) per phase. Its metal oxide varistor technology responds in under 25 ns, limiting transient overvoltages to less than 1.5 kV. An integrated thermal disconnector and green/red visual status flag provide immediate condition indication, while a remote signaling contact enables integration into monitoring systems.

Advantages

Fast response and high discharge capacity protect sensitive equipment from surge damage. The visual status indicator and remote signaling simplify maintenance and system monitoring. Compact DIN rail mounting saves panel space and speeds installation.

Suitable for

• Three-phase distribution boards with neutral
• Industrial control panels and automation systems
• Commercial building electrical installations
• Protection of equipment in accordance with IEC 61643-11

Key specifications

• SPD type: Type 2
• Number of poles: 3P+N
• Maximum continuous operating voltage (Uc): 275 V AC
• Nominal discharge current (In): 20 kA (8/20 µs)
• Maximum discharge current (Imax): 40 kA (8/20 µs)
• Voltage protection level (Up): < 1.5 kV
• Technology: Metal oxide varistor (MOV)
• Mounting: DIN rail (35 mm)
• Remote signaling: Yes
• Standards compliance: IEC 61643-11
• Degree of protection: IP20
• Operating temperature range: -40 to +80 °C
• Short-circuit withstand capability (Isccr): 50 kA
• Response time: < 25 ns
• Thermal disconnector: Integrated
• Visual status indicator: Yes (green/red flag)

Recommendations

Install this SPD at the main distribution board of three-phase installations to protect downstream equipment from indirect lightning strikes and switching surges. Ensure proper coordination with upstream Type 1 SPDs for full protection.