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The is a high-precision, DIN-rail mounted protection relay designed to safeguard electrical systems from over-voltage, under-voltage, and over-current events. This guide provides an enhanced overview of its manual settings and operational features for optimal home or industrial safety. Core Functions and Features

Press and hold the button for 3 seconds to enter programming mode. The screen will flash, showing the first parameter. 2. Parameter Adjustment Sequence

Do not change unless you understand local grid limits (e.g., never set Uover > 290V for 230V systems).

| Problem | Likely cause | Fix | |---------|--------------|-----| | Won’t reset after trip | Voltage still out of range | Check grid voltage with multimeter | | Random trips | Loose neutral / harmonics | Verify N terminal screw | | Button test doesn’t trip | RCD mechanism failed | Replace device | | Handle stuck mid-position | Internal fault | Disconnect load, try resetting; if fails → replace |

The TOMZN TOVPD1-60-EC Go to product viewer dialog for this item.