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OVR BT2 3N 40-440 P TS

ABB OVR BT2 3N 40‑440 P TS is a Type 2 Surge Protective Device (SPD) designed to protect low-voltage power distribution systems from surges caused by indirect lightning strikes and switching overvoltages. It is intended for installation at main incoming panels or sub-distribution boards to safeguard electrical/electronic equipment. The “TS” version includes a potential-free auxiliary contact for remote signaling of device status.

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Key Technical Parameters Electrical Characteristics Surge Protection Class: Type 2 (IEC 61643‑11) Configuration: 3 phase + Neutral (3N) Nominal System AC Voltage: 400 V / 690 V AC Maximum Continuous Operating Voltage (Uc): L–PE: 440 V L–L: ~760 V L–N: 440 V N–PE: 440 V Nominal Discharge Current (8/20 µs): 20 kA Maximum Discharge Current (8/20 µs): 40 kA Impulse Current (10/350 µs): ~2 kA Voltage Protection Level (Up): L–N: ~1.8 kV N–PE: ~1.4 kV Short Circuit Withstand (Icc): 100 kA Mechanical / Functional Features Auxiliary Contact (“TS”): Potential-free NO/NC contact for remote monitoring Status Indicator: Visual indication of operation or failure Mounting: DIN rail IP Rating: IP20 Operating Temperature: −40 °C to +80 °C Modular Width: 4 modules Standards / Compliance IEC 61643‑11 (EN 61643‑11) Usage / Application Protects electrical systems against transient overvoltages in 3-phase networks (TN‑S, TT) Suitable for main distribution boards and subpanels in commercial and industrial installations TS auxiliary contact allows integration with remote alarm or building management systems