Extech 480400 Phase Sequence Tester, 15 Hz to 400 Hz, 40 V to 600 V, CAT III 600V, For Three Phase, Digital LG2T 30402 08 White Item Label For Use White Item Label For Use With Drywall Mfr Model 9065ST420 Compatible Contactor Series 9065 Motor Logic Solid State Overload Relays Relay Style NEMA Overload Protection Type Electronic Number of Poles 3 Phase Three Auxiliary Contact Form 1NC Relay Mounting Style Direct To Contactor NEMA Size 4 Min Current Setting 45 A Max Current Setting 135 A Trip Class 10 20 Max Voltage Rating 600 V AC Reset Type Manual Standards REACH No battery required 7w phase sequence tester has a 40 to 600 v rated range for testing phase orientation of 3 phase power sources over a 15 to 400 hz frequency range