Heavy duty surge protectors meet tough IEEE specifications

IEEE 1000-4-5: 1995 and IEEE C62.41-1991 are the recognised 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 solid ground.

• Three stages of protection on every data line
• Protected signal ground connection
• Rugged terminal block connections
• Dedicated chassis ground lug
• DIN or panel mount versions
• RS-232, RS-422, RS-485 versions
• Easy to install

Model Number	Description	Lines Protected
HESP4DR	DIN Rail Mount RS-422/485 Protector	5 RS-422/485	Connection Diagram Datasheet DoC   Photo Accessory List
485HESP	Panel Mount RS-485 Protector	3 RS-422/485	Datasheet DoC   Photo Accessory List
422HESP	Panel Mount RS-422/485 Protector	5 RS-422/485	Datasheet DoC   Photo Accessory List
232HESP	Panel Mount RS-232 Protector	5 RS-232	Datasheet DoC   Photo Accessory List