Flotect Flow Switch Brass Body Ambient Temperature - Maximum 167 Degrees F Ambient Temperature - Minimum -4 Degrees F Connection Size 3/4 in Connection Type NPT Contact Rating (AC) 1 A @ 125V (MV Option) 5 A @ 125/250V (CSA ATEX and IECEx Models) 5 A @ 125/250V (MT Option) 5 A @ 125/250V (UL Models) Contact Rating (DC) 3 A (Inductive) @ 30V (CSA ATEX and IECEx Models) 5 A Resistive @ 30V (CSA ATEX and IECEx Models) Filter Rating - Maximum Not Applicable