Power Surge Arresterr

M3L680-40Ⅱ-3A

1.Application This surge protector is primarily utilized for surge protection against lightning strikes and other transient overvoltages in low-voltage power distribution systems and electrical equipment.
2.Functional performance The product is equipped with built-in overheat and overcurrent protection functions, providing Class C (Type II classification test) surge protection for low-voltage power distribution systems and electrical equipment. It adopts a 35-millimeter DIN rail mounting method, with the surge protection module being replaceable independently for convenient installation and maintenance. The product is also fitted with a remote signaling alarm interface (dry contact) to facilitate remote monitoring of the surge protector status.

3.Technical Parameters

Item	Specification
Product Model	M3L680-40I-3A
Rated voltage Un	400V AC
Maximum Continuous Operating Voltage – Uc	680VAC
Nominal Discharge Current – In (8/20μs)	20kA
Maximum Discharge Current – Imax (8/20μs)	40kA
Voltage Protection Level – Up (In)	2.8kV
Withstand Short-Circuit Current	25kArms
Front-Fuse	125AgL
Terminal Wiring Range	1.5 mm² ~25mm² (Flexible)/35mm² (Rigid)
Rated operating current of the alarm port	250V 0.5A(AC) 0.1A(DC) 125V/1A(AC) 0.5A(DC)
Enclosure Flame Retardant Rating	UL94 V-0
Enclosure Protection Rating	IP20