Products 762 Volt Arrestors

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

LA 803

$ Pricing Info

Weather Proof N-4
Case Dimensions:
4 1/2" Diameter
2 1/4" High

LA 803 for 800 Volt, 3 Phase, 4 Wire Service

LA 801 for 800 Volt, Single Phase, 2 Wire Service

800 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 3kV Str
Case material PVC
Locknut and Washer furnished 3/4" - 1 1/2"
Conduction Characteristics
8 x 20 microsecond wave shape - ANSI IEEE NEMA Standard
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 wires to the hot lines at any convenience point load-side of an existing fuse or circuit breaker. Connect the white wire to an existing ground system, 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.