The ABB OVRT23N40440PTSU is a DIN-rail mounted surge protective device (SPD) from ABB's OVR-TYPE2 family, designed to protect three‑phase systems with neutral (3P+N) from transient overvoltages. It provides a maximum continuous operating voltage (Uc) of 440 V and voltage protection levels of 1.3 kV (L‑N), 1.2 kV (N‑G), and 1.4 kV (L‑G), with a maximum discharge current of 40 kA (8/20 µs). Built on MOV technology, this 3P+N SPD clamps surges to safeguard downstream equipment in distribution panels, control cabinets, and other electrical installations.
