Siemens 3VL9300-3JN01 LV MAX FLEX Breaker Mechanism

Siemens 3VL9300-3JN01 LV MAX FLEX Breaker Mechanism is a complete Max-Flex operator assembly for Siemens VL-series molded‑case breakers (MFMF), designed to retrofit or replace the standard switching mechanism to enable front‑ or door‑mounted actuation. This gray‑knob variant (3JN01) is listed in the Max‑Flex family as the VL operator 3VL9300‑3JN01 and is part of Siemens’ MF/Max‑Flex offerings for VL breakers up to 1600 A (per UL 489). The mechanism is a front‑operated rotary operating mechanism that includes the switching mechanism and Bowden cable used to couple the actuator to the breaker, with configurations that accommodate front operation or door coupling. For installation, Siemens documents mounting hardware and accessories for the Max‑Flex system, including screw sets for attaching the mechanism to a 60 mm busbar system (e.g., M4 x 100 mm and M6 x 100 mm), and notes compatibility with 8US busbar adapters in 60 mm systems. The 3VL9300‑3JN01 gray‑knob option sits within the broader 3VL Max‑Flex lineup, which also covers various knob colors and installation depths to suit different panel enclosures and retrofit scenarios. This part is used when a front‑operating, retrofit, or door‑coupled actuation solution is required for VL molded‑case breakers in Siemens applications.