Delta LA603 Lightning Arrestor: 0 – 600 VAC, 3 or 4 Wire

ID: LA603


Delta Lightning Arrestors

Rapid response, high current Delta Lightning Arrestors help prevent damage to computers and other electronic equipment. The Delta LA Series handles the big surges, like lightning up to 50,000 amps, passing them harmlessly to the ground.

Out of stock


LA603 – For 440-600 Volt, Three Phase, 3 or 4 Wire Service

Rated voltage 240-480-600 Volt, three or four wire service. Used when three hot wires of a three phase system are to be protected.

Fasten arrestor in place. Use a Delta mounting bracket, part # MB, a pipe strap, or a knockout hole. Connect the black wires to the hot line at any convenient point load-side of an existing fuse or circuit breaker. Connect the white wire to an existing ground system and the grounded metal frame work of the equipment to be protected, or make a ground source per NEC Article 250.

600 Series Specifications

Type of Design Silicon Oxide Varistor
Maximum current 100,000 amps
Maximum energy 3,000 joules per pole
Maximum number of surges Unlimited
Response time one milliamp test 5 nanoseconds
Response time to clamp 10,000 amps 10 nanoseconds
Response time to clamp 50,000 amps 25 nanoseconds
Leak current at double the rated voltage none
Leads 36″ #12 THHN
Case material PVC
Locknut and Washer 1/2″ – 3/4″
Category B & C and Type 1 & 2



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