B&B Electronics 422HESP Blue,Silver surge protector

RS-422 Surge Protector IEEE 1000-4-5: 1995 and IEEE C62.41-1991 are the recognized standards for top quality, heavy duty surge protectors. B&B Electronics’ RS-232, RS-422, RS-485 data line surge protector units meet these specifications with three stage protection for maximum safety: a gas discharge tube feeds to a series resistor and a TVS (Transient Voltage Suppressor) for each supported line.

Tough metal panel mount cases protect models 232HESP, 422HESP and 485HESP. HESP4DR provides the same surge protection in a molded DIN Rail mount case. All of our heavy duty surge protectors have #10 ground screws which must be connected to a solid ground.