Eaton 189897 3-Pole Motor Protection Circuit Breaker 0.12kW 0.4-0.63A

The Eaton 189897 is a high-quality 3-pole motor protection circuit breaker engineered to provide robust control and safety for electrical motors. Designed for precision, this device ensures that motors rated at 0.12kW operate within safe parameters by offering reliable protection against electrical faults. Its compact and durable construction makes it an essential component for maintaining the longevity and performance of industrial and commercial machinery.

Advantages

This motor protection circuit breaker offers exceptional reliability in demanding electrical environments. By integrating both short-circuit and thermal overload protection into a single unit, it simplifies system design while enhancing safety. The adjustable thermal release range allows for precise calibration to the specific requirements of the connected motor, ensuring that the device trips only when necessary, thereby preventing nuisance shutdowns while maintaining comprehensive protection against damaging current spikes.

Suitable for

• Industrial motor control systems
• Commercial HVAC equipment
• Conveyor belt motor protection
• Pump and fan control applications

When it may not be suitable

This device is not intended for use with motors exceeding the 0.12kW power rating or those requiring current settings outside the 0.4 to 0.63A range. It is also not suitable for applications requiring specialized protection features such as ground fault detection or advanced electronic communication capabilities.

Key specifications

• Number of poles: 3
• Power rating: 0.12kW
• Current adjustment range: 0.4A to 0.63A
• Protection type: Thermal overload and short-circuit

How to use

Installation should be performed by a qualified electrician in accordance with local electrical codes. The device is typically mounted on a standard DIN rail within a control cabinet. Once mounted, connect the power supply to the input terminals and the motor leads to the output terminals. Use the adjustment dial on the front of the unit to set the thermal release current to match the full-load current rating of your specific motor.

What to consider before purchase

• Verify the full-load current rating of your motor
• Ensure the power rating matches the 0.12kW specification
• Check available space in your electrical enclosure
• Confirm compatibility with your existing mounting system

Usage recommendations

Regularly inspect the circuit breaker for signs of wear or thermal damage. Periodically test the trip mechanism to ensure the device remains functional and capable of protecting your equipment during an actual fault condition.