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.

3WA1110-4AB42-0AA0

The Siemens 3WA1110-4AB42-0AA0 is a withdrawable circuit breaker designed with a guide frame, adhering to IEC 60947-2 standards. It belongs to the 3WA1 Air Circuit Breakers series and is engineered for industrial power distribution systems requiring reliable performance and safety.

Key Features and Specifications:

• Number: 3WA1110-4AB42-0AA0
• Mounting Type: Withdrawable with a guide frame
• 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
• 66 kA at 690 V

Features and Functionalities

Trip Unit:

• Features the ETU300 LSI trip unit, optimized for standard applications
• Provides long-time (LT), short-time (ST), instantaneous (INST), and N-protection
• Includes an internal N-sensor, eliminating the need for external components
• Does not include a display for simplified use

Guide Frame:

• Equipped with a shutter for enhanced safety during maintenance
• Does not include a position signaling switch

Manual Operating Mechanism:

• Operated with a mechanical closing mechanism
• Excludes a spring charging motor, making it suitable for manual operation

Connections and Safety:

• Rear horizontal connections for easy installation
• Includes a trip alarm switch (1xCO) for status notifications

Auxiliary Features:

• Comes with 2NO and 2NC auxiliary switches for additional control

Excludes:

• Closing coil (CC)
• Remote trip alarm reset coil (RR)
• Shunt trips

Metering and Communication:

• No communication or metering functions, making it ideal for straightforward use cases

Additional Product Information:

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

Applications:

The 3WA1110-4AB42-0AA0 is well-suited for:

• Industrial power systems requiring robust fault protection
• Scenarios demanding reliable and safe manual operation
• Environments where withdrawal mechanisms and shutter features are critical for maintenance safety

With its high breaking capacity and integrated trip unit, it is ideal for industries prioritizing operational reliability and straightforward maintenance.