The Eaton INX16, specifically model 16B3-10W-1, is a high-capacity industrial air circuit breaker designed for heavy-duty power distribution and protection. As part of Eaton’s global power circuit breaker family, the INX series provides a compact yet powerful solution for managing high-current electrical systems. With a 1000A continuous current rating and a 3-pole configuration, this breaker is engineered to safeguard transformers, motors, and large-scale industrial feeders against overloads and short circuits.

Technical Description & Parameters

The INX16 16B3-10W-1 utilizes advanced contact materials and arc-extinguishing technology to ensure reliable interruption of high-energy faults.

• Model Number: INX16 (16B3-10W-1)
• Frame Size: INX16 (1600A Max Frame, rated at 1000A)
• Number of Poles: 3-Pole (3P)
• Rated Current (In): 1000A
• Frequency: 50/60 Hz (Dual Frequency compatibility)
• Configuration: Fixed or Draw-out (depending on mounting hardware)
• Trip Unit: Electronic Trip Unit (typically Digitrip or similar Eaton platform)
• Operation: Manual or Motor-operated (based on accessories)
• Voltage Rating: Typically rated up to 690V AC

 

Product Datasheet Essentials

The “16B3-10W-1” designation refers to a specific build configuration including the frame rating, trip unit type, and wiring accessories. This breaker features high-withstand ratings, allowing it to remain closed during momentary surges to maintain system coordination while protecting downstream equipment. It is designed for easy maintenance, with primary contacts that are easily inspected and arc chutes that can be removed for cleaning or replacement.

 

Country of Origin

USA / Global (Eaton Corporation)

 

Application Fields

The INX16 series is widely used in critical infrastructure and large-scale manufacturing:

• Commercial Infrastructure: Main distribution boards for hospitals, data centers, and high-rise buildings.
• Heavy Manufacturing: Protection for large motor control centers (MCC) and industrial furnaces.
• Renewable Energy: Integrated into wind turbine converters and solar farm collection grids.
• Marine & Offshore: Main switchboards on commercial vessels and oil platforms due to its vibration resistance.

 

Product Usage Instructions

1. Installation: Mount the breaker in a ventilated switchgear cubicle. Ensure all busbar connections are clean and tightened to the specified torque to prevent localized overheating.
2. Trip Unit Setting: Configure the Long-time (L), Short-time (S), Instantaneous (I), and Ground-fault (G) settings on the electronic trip unit to match the specific protection requirements of your electrical system.
3. Charging the Mechanism: For manual models, use the front handle to pump and charge the closing spring. For motor-operated models, ensure the control voltage is applied to the charging motor.
4. Inspection: Periodically check the “Contact Wear” indicator on the front of the breaker. Replace contacts if the indicator shows they have reached their service limit.

 

Common Questions & Answers (Q&A)

Q: What is the difference between the INX16 and the IZM series? A: The INX series is often localized for specific regional markets or technical standards, though it shares many internal components and the same robust architecture as the global IZM or Magnum series breakers.

Q: Can this breaker be used for both 50Hz and 60Hz systems? A: Yes, the INX16 16B3-10W-1 is rated for 50/60Hz dual-frequency operation, making it suitable for international industrial projects.

Q: Does it support remote communication? A: Depending on the specific electronic trip unit installed, the breaker can support Modbus, Profibus, or Ethernet communication modules for remote monitoring of current, voltage, and trip status.

 

Explore More Power Distribution Parts

For expert technical support and to browse our inventory for the INX16 and other Eaton power solutions, visit our online catalog.

 

Recommended Similar Models

1. INX10 – A 1000A frame model for applications with lower physical space requirements.
2. Magnum DS 1000A – The North American equivalent breaker with similar performance characteristics.
3. IZMX16 – The IEC-rated version of the INX16 frame for European and Asian markets.
4. NGH310033E – An Eaton N-Frame molded case breaker (MCCB) for 1000A applications.
5. DS-416 – A legacy Westinghouse/Eaton air circuit breaker often replaced by modern INX units.