SIEMENS 3VL9800-3MQ00 PR Motorized Operating Mechanism
SIEMENS 3VL9800-3MQ00 PR is a spring-stored-energy motorized operating mechanism designed for SENTRON VL series molded case circuit breakers, used in low-voltage power distribution panels, generator switchboards and marine electrical systems. This motorized operating mechanism provides remote electrical closing and opening for the matched MCCB; the motor charges the internal spring, and the spring releases rapidly to complete closing action. The motorized operating mechanism retains manual emergency operation capability, comes with local/remote mode selector switch, status indication and padlockable mechanical interlock for safety isolation. The motorized operating mechanism serves as key distribution spare part for power cabinet overhaul, automatic transfer scheme retrofit and marine main switchboard maintenance.

This 3VL9800-3MQ00 PR unit is matched with large frame VL1250 / VL1600 MCCB, control supply 220–250V AC/DC, IP30 protection when mounted inside enclosure. It has built-in spring energy storage indication and fault monitoring, compliant with IEC 60947-2, CE and marine type approval standards. This legacy accessory is phase-out, original manufacturing discontinued, only surplus and reconditioned spare stock available. Widely applied on industrial power plants, petrochemical plants, cargo vessels and offshore platform LV distribution systems.

As remote switchgear actuation hardware, this SIEMENS 3VL9800-3MQ00 PR enables automatic and remote breaker operation for load management and backup power switching. SIEMENS 3VL series spare parts include 3VL9800-3MQ00 PR motorized mechanisms, auxiliary contact blocks, shunt trip coils, undervoltage releases and mounting kits for molded case circuit breaker system maintenance. SIEMENS spring stored-energy motorized operating mechanisms are trusted replacement units for legacy SENTRON VL large frame MCCB remote control systems.