ACB: 3WJ Locking accessories -3WJ9111-0BA31

Product Description

Siemens 3WJ ACB Accessories – Locking Accessories – 3WJ9111-0BA31

The Siemens 3WJ9111-0BA31 is a locking kit accessory designed for SENTRON 3WJ Air Circuit Breakers (ACB). It provides a secure mechanical locking arrangement for key-operated safety interlocking systems, preventing unauthorized closing of the breaker during maintenance or unsafe conditions.

This accessory is used with Fortress or Castell key interlock systems, ensuring that the breaker can only be operated when the correct key sequence is completed. It is widely used in industrial power distribution panels, critical infrastructure, data centers, and commercial switchboards, where operational safety and controlled access are essential.

The locking kit enhances operator safety, maintenance security, and compliance with industrial safety standards, making it a key component in modern LV switchgear systems.

🔹 Key Features

• Siemens SENTRON 3WJ series ACB accessory
• Part Number: 3WJ9111-0BA31
• Locking kit for key-operated interlocking system
• Compatible with Fortress / Castell lock systems
• Prevents unauthorized closing of ACB
• Ensures safe maintenance and operation
• Mechanical interlock protection for switchgear safety
• Modular accessory for 3WJ Air Circuit Breakers
• Heavy-duty industrial-grade construction

Complies with IEC 60947 standards