IEEE 1000-4-5: 1995 and IEEE C62.41-1991 are the recognized standards for
top quality surge protectors. B&B Electronics’ heavy duty 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 have #10 ground screws which must be connected to a