ABB MS116-1.6 Miniature Circuit Breaker 3P 1.6A

The ABB MS116-1.6 is a high-performance 3-pole manual motor starter designed to provide reliable protection for electrical motors. With a compact 45 mm width, this device serves as a comprehensive solution for switching and safeguarding motors against common electrical faults without the need for additional fuses. It is engineered to handle a rated operational current of 1.6 A and is suitable for both three-phase and single-phase electrical systems, ensuring versatility across various industrial and commercial environments.

Advantages

This motor protection circuit breaker offers exceptional reliability through its integrated thermal and magnetic release mechanisms, which effectively guard against short-circuits, overloads, and phase failures. The device features a trip-free mechanism and a clear rotary handle for intuitive switch position indication, enhancing operational safety. Its robust design includes temperature compensation and a built-in disconnect function, allowing for efficient maintenance and system control. The high breaking capacity of 50 kA at 400 VAC ensures that the unit can handle significant fault currents, maintaining system integrity under demanding conditions.

Suitable for

• Manual switching of electric motors
• Protection of three-phase and single-phase motor applications
• Industrial motor control centers
• Commercial HVAC and pump systems
• Applications requiring fuse-less short-circuit and overload protection

When it may not be suitable

This device is specifically calibrated for a rated current of 1.6 A and is not suitable for motors requiring higher operational currents. It is designed for indoor use and does not provide high-level environmental protection against water or dust, meaning it should not be installed in harsh, exposed, or outdoor environments without an appropriate protective enclosure.

Key specifications

• Rated operational current: 1.6 A
• Number of poles: 3
• Rated service short-circuit breaking capacity: 50 kA at 400 VAC
• Trip class: 10A
• Width: 45 mm
• Protection rating: IP20
• Frequency range: 50-60 Hz

How to use

The ABB MS116-1.6 is designed for standard DIN-rail mounting within a control cabinet. Once installed, the motor is connected to the output terminals, and the power supply is connected to the input. The rotary handle allows for manual ON/OFF switching. In the event of a fault, the trip-free mechanism ensures the device disconnects the motor even if the handle is held in the ON position. The device can be customized with various accessories such as auxiliary contacts or undervoltage releases to meet specific control requirements.

What to consider before purchase

• Verify that the 1.6 A rated current matches your motor's full-load amperage.
• Ensure the installation environment meets the IP20 protection standard.
• Check if additional accessories like bus bars or signaling contacts are required for your specific configuration.
• Confirm the compatibility of your supply voltage with the device's operational limits.

Usage recommendations

For optimal performance and safety, ensure that all electrical connections are tightened to the manufacturer's specified torque. Regularly inspect the device for signs of wear and test the trip function periodically to ensure the protection mechanism remains fully operational.