Siemens air circuit breakers, especially the SENTRON 3WA series, are advanced solutions for power distribution in industrial and infrastructure applications. These circuit breakers are essential for maintaining the reliability and safety of electrical systems, particularly as automation and strict regulatory standards become more prominent.

The SENTRON 3WA air circuit breakers are known for their fail-safe performance in complex environments, ensuring continuous power and protecting against overloads, short circuits, and other potential faults. They are engineered to be flexible and adaptable, allowing for integration into diverse system setups. With intuitive features and straightforward customization options, the SENTRON 3WA breakers simplify installation and operation, making it easier for engineers and facility managers to achieve their power management goals.

SENTRON 3WA

Siemens’ SENTRON 3WA air circuit breakers are designed to meet the growing demands of modern power distribution, providing safety and reliability in increasingly automated environments. As power distribution systems need to comply with stricter standards, the SENTRON 3WA offers a solution that is not only robust but also flexible, allowing for easy customization to suit different infrastructure needs.

This breaker line is engineered to ensure fail-safe operation, helping manufacturers and operators achieve optimal results while maintaining system integrity. With SENTRON 3WA, Siemens aims to simplify complex power distribution challenges, making it easier for users to meet their specific objectives.

3WA1110-4AB12-0AA0

The Siemens 3WA1110-4AB12-0AA0 is a robust, fixed-mounted circuit breaker built to meet IEC 60947-2 standards, making it a reliable choice for industrial power distribution systems. As part of Siemens’ 3WA1 Air Circuit Breakers line, this model supports medium-voltage applications and provides high fault-interrupting capability.

Key Features and Specifications:

• Number: 3WA1110-4AB12-0AA0
• Mounting Type: Fixed-mounted
• Frame Size: 1
• Poles: 4-pole with N-pole on the left
• Rated Current (In): 1000 A
• Voltage Rating: Up to 690 V AC (50/60 Hz)

Breaking Capacity:

• Icu: 85 kA at 500 V
• Icu: 66 kA at 690 V

Functional Features:

Trip Unit:

• Equipped with the ETU300 LSI trip unit, which is optimized for standard applications
• Includes protection functions: long-time (LT), short-time (ST), and instantaneous (INST) protection
• Features N-protection with an integrated internal N-sensor

Manual Operating Mechanism:

• Operates via a mechanical closing mechanism, allowing for reliable manual operation
• No spring charging motor, suitable for manual control systems

Auxiliary and Alarm Switches:

• Includes a 1xCO trip alarm switch for notification in case of a fault
• Comes with 2NO and 2NC auxiliary switches for additional control and signaling options

Connectivity:

• Rear horizontal connection for streamlined setup and installation

Additional Features:

• Lacks communication and metering functions, making it a straightforward choice for non-networked applications
• No closing coil (CC), remote trip alarm reset coil (RR), or shunt trips, keeping the device simple and reliable

Additional Product Information:

• Product Family: 3WA1 Air Circuit Breakers for applications up to 6300 A (AC)
• Product Lifecycle (PLM): Active, indicating ongoing support and availability
• Commodity Code: 85362090
• Catalog ID: LV10, Group Code: P360

Applications

The Siemens 3WA1110-4AB12-0AA0 is ideally suited for fixed installations where consistent manual operation and reliable protection are required. Its ETU300 LSI trip unit ensures essential protection against various fault types, making it ideal for standard industrial applications. The absence of complex metering and communication features simplifies operation, while the internal N-sensor provides enhanced safety for three-phase systems with a neutral conductor.