Model Number: TY4-40 3P. Brand Name: TYCOTIU,CHTAIKE Key Specifications/Special Features: CE/ISO 9001 certified, RoHS Directive-compliantFor protecting low-voltage consumer's installations against indirect lightning discharges and is intended to provide protection in zones 1-2 as per IEC 62305Consists of a high performance varistor block with thermal disconnection devicePlug-in module/base design facilitate replacement of a failed module without need to remove system wiringProtection class: class IIPole number: 3PMaximum continuous operating voltage (UC) (AC/DC): 150V, 275, 320V, 385V, 440VNominal discharging current (8/20μs) (In):20 to 40kAMaximum discharging current (8/20μs) (Imax): 40 to 80kAProtection level up: ≤1.3 to 2.5kV