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Delta Lightning Surge Arrestor, 20,000 Amp, 750 Joules Per Pole
DRMO302
Price: $49.95
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 Product Description
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DELTA SURGE ARRESTOR, 20,000 AMP, 750 JOULES PER POLE HELPS PREVENT VOLTAGE SURGE AND LIGHTNING DAMAGE The Delta Surge Arrestor features a metal oxide varistor design with a maximum current of 20,000 amps and a maximum energy of 750 joules per pole. It helps prevent voltage surge and lightning damage. HOW ARRESTORS AFFECT SURGES Surges are comprised of two elements: voltage and quantity of charge. A very high voltage surge can damage equipment by breaking down the insulating medium between elements in a circuit or between those elements and a ground. The amount of damage will be determined by the current from the charge and/or current from the power source. In order to protect a circuit from damage, a surge arrestor must conduct sufficient charge from the surge to lower the surge voltage to a safe level quickly enough to prevent circuit insulation from breaking down. All circuits can withstand a high voltage for a short time. The shorter the time becomes, the higher the tolerable voltage becomes. Consider a fifty thousand volt surge impressed on a two-hundred-forty volt apparatus having a surge arrestor connected parallel. The surge arrestor will begin to conduct the charge, bleeding it out of the circuit. As the charge is removed from the circuit, the surge voltage will fall. As the charge approaches zero the surge voltage will approach zero. If this happens quickly enough the apparatus will be protected. How quickly an arrestor can eliminate a surge from a circuit depends on four factors: the magnitude of the voltage, the quantity of the charge, the speed at which the arrestor starts conducting, and the conductivity of the arrestor. Given two arrestors, one having double the conductivity of the other, one will handle the surge twice as rapidly as the other. Given two arrestors of the same conductivity but one which begins to conduct more quickly, the quicker one will eliminate the surge from a circuit more quickly. |
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- Type of design: Metal Oxide Varistor
- Maximum current: 20,000 amps
- Maximum energy: 750 joules per pole
- Line Voltage: 120/240 Volts AC
- Response time: 5 nanoseconds
- Leads: 18" #12 THHN
- Case material: PVC
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