TRANSTECTOR's I2R-75KD480 480 VAC, three-pole, delta surge protection. The I2R-75KD480 offers a modular, three-pole, delta, three-wire, DIN rail, 480 VAC surge protection solution for industrial applications with nominal discharge current of 10 kA. Through superior design, each I2R combines a robust 75 kA surge capacity that also eliminates back-up fusing requirements thus providing network operators with a quick to install, safe, and reliable product set for AC network surge protection.