The NR 3 delay relay is an electronic timer with a relay output for delayed switching on and off of secondary consumers (e.g. for fan control in bathrooms/WCs, etc.). If required, the relay can also be used as a pure switch-on delay without a delay time. The switchable operating modes and the wide range of adjustable running times mean that the NR 3 relay can be used in a wide variety of ways., Dimensions: 18x55mm, 230V AC - 1 changeover contact (potential-free) 10A