Tests for safety, performance and long life

1. Standard for Safety - Transient Voltage Surge Suppressor - UL 1449 

2. IEEE Recommended Practice on Surge Voltages in Low Voltage AC Power Circuits - IEEE Sparen C62.41, 1991

3. Verification of Long Life & Reliability, Accelerated Life Test - NEETRAC

   The nationally recognized testing laboratory (NRTL) used for testing TESCO products is Underwriters Laboratories (UL) and Edison Testing Laboratories (ETL), Corland, NY. ETL.