Model Number: TY4-40 2P Brand Name: TYCOTIU,CHTAIKE Key Specifications/Special Features: Patented design (LVD/EMC test reports, CE/ISO 9001 certified, RoHS Directive-compliant)For 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: 2PMaximum continuous operating voltage (Uc) (AC/DC): 150/200V, 275/350V, 320/420V, 385/500V, 440/580VNominal discharging current (8/20μs) (In): 15 to 30kAMaximum discharging current (8/20μs) (Imax): 30 to 65kAProtection level up: ≤1.0 to 2.0kV