762 Volt Arrestors
Delta ArrestorsTM for 762 Volt Oilfield Applications or other Applications Above 600 Volts.

800 Series Specifications


 LA 803  

Type of design Silicon Oxide VaristorTM

Case Dimensions:
 4-1/2" High
 2-1/4" Diameter

Maximum current 100,000 amps
Maximum energy 3000 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 25,000 amps 25 nanoseconds
Leak current at double the rated voltage None
Leads 36" #12 3kV Str
Case material PVC
Locknut and Washer furnished 3/4" - 1 1/2"

LA 803 for 800 Volt, 3 Phase, 4 Wire Service
LA 801 for 800 Volt, Single Phase, 2 Wire Service

Conduction Characteristics

Discharge Current 5000 A 10000 A 20000 A 40000 A 60000 A 80000 A 100000 A
Clamping Voltage
(Line to Neutral)
500 V 1000 V 1100 V 1600 V 2400 V 4200 V 5500 V
Unlimited Operations One Operation

Fasten arrestor in place. Use a Delta mounting bracket, part # MB, a pipe strap, or a knockout hole. Connect the black wire 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.

Electrical work is hazardous. Bad connections can result in fire, injury or death. Installation must only be done by qualified electricians.

In the event that a lightning discharge is so powerful that something has to be destroyed, the arrestor will take the damage. When sufficient heat and stress causes failure, a one inch hole will open at the bottom of the enclosure. Hot silica and plastic bits will be expelled. Installing the arrestor in any approved electrical box will prevent accidental contact with a damaged unit.

LA 803 Pricing


Installation Instructions Information Request Form

Home General Products Service Site Map

Please give us your feedback on our website.

© 2004 Delta Lightning Arrestors