Product Description
Delta LA302R
3‑Wire • Single Phase • 120–250VAC AC Lightning Arrestor
Delta Lightning Arrestors provide rapid‑response, high‑current surge protection for residential and light‑duty electrical systems. The Delta LA Series is engineered to safely divert lightning surges up to 50,000 amps, protecting sensitive electronics and connected equipment.
The LA302R is designed for 125–250VAC single‑phase, 3‑wire systems, making it ideal for applications where two hot legs of a single‑phase service require protection. This model is commonly used in homes, small shops, and light commercial installations.
Delta Arrestor Features
- Non‑conductive base prevents shock hazards in the event of failure
- Fails without producing carbon dust that could damage nearby equipment
- Always fails “clear,” allowing continued system operation
- Silicon‑based design for fast response and low conduction resistance
- Handles numerous high‑energy surges and half‑cycle spikes before failure
- Extra‑long leads for easier installation
- Includes locknut and bushing
- Available in multiple voltages and pole configurations
LA302R Specifications
| Rated Voltage | Design Type | Surge Current | Max Energy | Leads | Enclosure Rating | Dimensions |
| 125–250V Single Phase 3‑Wire |
Silicon Oxide Varistor | 100,000 amps | 3,000 Joules per pole | 18" #12 THHN | NEMA 4 | 4.5" H × 2.25" D |
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