TRANSTECTOR 120 Vac Single Phase Modular Protector. 1-pole  single-phase  2-wire surge protection with nominal discharge current of 20 kA. 

TRANSTECTOR 120 Vac Single Phase Modular Protector. 1-pole single-phase 2-wire surge protection with nominal discharge current of 20 kA. 

I2R-75KS120$129.88