DESCRIPTION

The 313.125 is a lead-free 3AG Slo-Blo time-lag fuse designed for supplementary circuit protection in appliances and utilization equipment. It is rated at 0.125 A (125 mA) at 250 V with an interrupting rating of 250 A and a nominal cold resistance of 0.278 O. The fuse exhibits time-lag characteristics with a minimum opening time of 4 hours at 100% of ampere rating, a maximum opening time of 1 hour at 135% of rating, and a response time of 5 seconds minimum to 30 seconds maximum at 200% of rating. It operates across a temperature range of -55 °C to +125 °C and features a glass body with nickel-plated brass caps and tin-plated copper leads. This fuse is commonly used to provide individual component protection and internal circuit safeguarding in consumer and industrial applications.