A surge protector is an appliance or device intended to protect electrical devices from voltage spikes in alternating current (AC) circuits. A voltage spike is a transient event, typically lasting 1 to 30 microseconds, that may reach over 1,000 volts. Features: Could be replaced for the module does not need a power cut. The maximum current to endure the lightning stroke is 50kA. The color of the visible window shows the operating status, green means normal, and red means abnormal. Specifications: Brand Name: Suntree Model Number: SUP1 Type: SUP1-40 AC Surge Protector Response Time <25ns TECHNICAL SPECIFICATION Discharge Current 20~400kA GENERAL SPECIFICATION Combination type 4P Working Voltage 230/400V, AC Uses: Protects electrical panels from lightning surges Safeguards household and office equipment Used in industrial power distribution systems Prevents damage from transient overvoltage Enhances safety and system reliability Package Includes: 1 x Suntree SUP1-40 AC Surge Protector Lightning Protection Safety Protector SPD