Monitoring relay, multifunctional 1P - one changeover contact. Supervised voltage 3~(N) 400 / 230 V AC. Voltage supervision in one phase or in three phases - supervision of the minimum value and supervision in the "window" function (adjustable values); phase sequence; phase loss; voltage asymmetry. Neutral connection possible. Detects a break in the neutral wire. Input (power) = measurement input. Measuring inputs: single-phase network Un - 230 V AC - terminals: N(N) - L1//L2/L3(L); three-phase network Un - 400 V AC - terminals: (N)-L1-L2-L3. Output: 1P contact - terminals: 15-16-18; AC1 - 5A / 250V. Dimensions: 87 x 17.5 x 65mm. Mounting on a 35 mm rail. Housing - installation module. IP 20.