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.

3WA1110-4AB02-0AA0

The Siemens 3WA1110-4AB02-0AA0 is a fixed-mounted circuit breaker designed to meet IEC 60947-2 standards, offering reliable protection for electrical distribution systems. This circuit breaker is part of Siemens’ 3WA1 Air Circuit Breakers series, suitable for medium-voltage applications requiring durable protection and high breaking capacity.

Key Features and Specifications:

• Number: 3WA1110-4AB02-0AA0
• Mounting Type: Fixed-mounted
• Frame Size: 1
• Poles: 3-pole
• 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 ETU300 LSI trip unit, optimized for standard applications
• Provides long-time (LT), short-time (ST), and instantaneous (INST) protection
• N-protection requires an external N-sensor for complete fault management

Manual Operating Mechanism:

• Operates with a mechanical closing mechanism for reliable manual operation
• Does not include a spring charging motor, focusing on simpler manual control applications

Auxiliary and Alarm Switches:

• Includes 1xCO trip alarm switch for fault event signaling
• Comes with 2NO and 2NC auxiliary switches for additional control options

Connectivity:

• Rear horizontal connection for ease of installation and integration

Additional Features:

• No integrated communication or metering functions, simplifying its use in manual systems
• No closing coil (CC), remote trip alarm reset coil (RR), or shunt trip features, focusing on essential functionalities only

Additional Product Information:

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

Applications

The Siemens 3WA1110-4AB02-0AA0 circuit breaker is an ideal choice for fixed-mounted installations that demand high breaking capacity and straightforward operation. Its ETU300 LSI trip unit delivers essential protections suitable for medium-voltage distribution, and the fixed-mounted design enhances stability in permanent setups. This model’s lack of additional metering and communication functions makes it ideal for applications that prioritize manual, on-site operation with robust safety features.