RT18-125AM 3P DIN Rail Fuse Holder 125A 690V

Three-phase motor starters, industrial machinery feeds and manufacturing plant distribution boards all share a common requirement: per-phase fuse protection that lets maintenance teams pinpoint a blown fuse on one phase without shutting down the entire system. The Soltree RT18-125AM 3P is engineered for exactly this workflow. Three independent fuse positions — each with its own yellow status indicator window — let operators identify a fault phase in seconds, minimizing downtime on production lines and motor control centers. The 105mm-wide (3-module) housing fits standard 35mm DIN rails and accommodates Φ22×58mm cylindrical fuse links at 125A / 690V (fuse links sold separately: 63A / 80A / 100A / 125A). Thickened copper conductors (conductivity >98%) and sub-5mΩ contact resistance maintain over 99.5% transmission efficiency even at sustained high currents typical of motor loads. Flame-retardant housing and large wiring terminals with premium screws complete the assembly for safe, vibration-resistant operation in harsh industrial environments. Every unit is 100% electrically tested in our ISO 9001 certified facility. Note: fuse links are NOT included.