Class J Time Delay Fuses 600V 150A - Class G Time Delay Fuses 600V are ideal for fluorescent fixture protection.Class J Time Delay Fuses 600V 150A features include:Dual-Element, Time-Delay - 10 seconds (minimum) at 500% rated currentIR: 200kA RMS Sym. 300kA RMS Sym. (self certified)Long time-delay minimizes needless fuse openings due to temporary overloadsCan often be sized for back-up protection against motor burnout from overload or single-phasing if other overload protective devices failHigh interrupting rating to safely interrupt overcurrents up to 300kAHigh degree of current limitation due to the fast speed-of-response to short-circuitsFaster response to short-circuit currents than other overcurrent protective devicesReduces let-through thermal and magnetic forces in order to protect low withstand rated componentsProper sizing provides "No Damage" Type "2" coordinated protection for NEMA and IEC motor control in accordance with IEC Standard 947-4-1Dual-element fuses have lower resistance than ordinary fuses so they run coolerLower watts loss reduces power consumptionUnique dimensions assure that another class of fuse with a lesser voltage rating, interrupting rating or current-limiting ability cannot be substitutedUL Listed, Class JCSA Certified HRCI-J 200,000 AIRClass J per CSA 22.2 No. 248.8, Class 1422-02Below is more info on our Class J Time Delay Fuses 600V 150A: