SIEMENS 3WT9832-1JK00 Motorized Operating Mechanism

OverviewSIEMENS 3WT9832-1JK00 is a motorized operating mechanism accessory for Siemens SENTRON 3WT series air circuit breakers. This motor operator is designed for remote electrical closing and opening control of the 3WT ACB, supporting 220–240V AC and 220–250V DC control voltage range. It is installed inside the breaker compartment and works together with the stored-energy spring system of the air circuit breaker. It enables automatic remote switching for power distribution automation, redundant power transfer, and unattended substation control. Manual local operation is still reserved as backup when electric operation is unavailable. This part is an official standard accessory and is actively supplied as spare for 3WT breaker maintenance and upgrade.

FeaturesSIEMENS 3WT9832-1JK00 integrates drive motor, reduction gear set and limit switch assembly inside a compact metal housing. The Motorized Operating Mechanism automatically charges the closing spring and completes remote closing command upon receiving control signal; it includes built-in position feedback switches for on/off status signal output. It has overcurrent and stall protection for the motor to avoid mechanical damage under jamming. It complies with IEC 60947-2, carries CE and CCC certifications, and matches the modular accessory architecture of 3WT breakers. It can be configured with auxiliary contacts, shunt trips and undervoltage releases to build complete remote control schemes. SIEMENS 3WT9832-1JK00 is interchangeable with other voltage variants of the same 3WT9832 family for different control power requirements.

SpecsSIEMENS 3WT9832-1JK00 motorized operating mechanism. The Motorized Operating Mechanism catalog: 3WT9832-1JK00. Compatible breaker: 3WT series air circuit breaker. Control voltage: 220–240V AC / 220–250V DC. Function: remote electric closing and spring charging. Feedback: built-in limit switches for position indication. Installation: internal accessory for 3WT breaker. Lifecycle: active, available as original spare. It is stocked as ACB remote control spare.

Operating ParametersSIEMENS 3WT9832-1JK00 ambient operating temperature: -5℃ ~ +70℃. The Motorized Operating Mechanism relative humidity: 5%~95% non-condensing. Frequency: 50/60Hz for AC supply. Protection class: IP20 inside switchgear cabinet. EMC: comply with low-voltage distribution IEC standards.

PrincipleSIEMENS 3WT9832-1JK00 receives the closing command signal and energizes the internal drive motor. The Motorized Operating Mechanism drives the gear train to charge the closing spring of the air circuit breaker. Once spring energy is fully stored, the limit switch cuts off motor power and signals “ready to close”. When the closing coil is triggered, the stored spring energy closes the main contacts. If motor burnout, gear wear or limit switch failure occurs, SIEMENS 3WT9832-1JK00 will fail to complete spring charging and remote closing.

ApplicationsSIEMENS 3WT9832-1JK00 is widely deployed in industrial main switchboards, data center power distribution systems, commercial building power rooms, power plant auxiliary panels and marine low-voltage distribution boards. The Motorized Operating Mechanism undertakes remote electric operation of 3WT air circuit breakers for automatic power transfer and SCADA remote control. It cooperates with protection trip units, auxiliary contacts and control logic to realize automated distribution management. SIEMENS 3WT9832-1JK00 is a preferred spare for 3WT breaker remote control retrofit and maintenance.