ABB MS116-16.0 Motor Protection Circuit Breaker, 16 A, 690 V AC

The ABB MS116-16.0 is a compact and highly reliable motor protection circuit breaker engineered to provide robust control and safety for electrical motors. With a rated operational current of 16 A and a maximum operating voltage of 690 V AC, this device serves as a critical component in industrial electrical systems, offering integrated thermal and magnetic trip mechanisms to prevent damage from overloads and short circuits.

Advantages

This motor protection circuit breaker stands out due to its space-saving design, which allows for efficient installation in crowded control cabinets. It offers precise current setting capabilities, ensuring that the protection parameters are perfectly matched to the specific requirements of the connected motor. The device is built to withstand demanding industrial environments, providing consistent performance and long-term durability while minimizing the risk of unexpected downtime caused by electrical faults.

Suitable for

• Industrial motor control centers
• Protection of three-phase induction motors
• HVAC system control units
• Pump and fan motor applications
• Automation and manufacturing machinery

When it may not be suitable

This device is not intended for use in circuits exceeding its rated voltage of 690 V AC or for applications requiring currents higher than the specified 16 A range. It is also not suitable for direct current (DC) applications unless specifically rated for such use by the manufacturer.

Key specifications

• Rated operational current: 16 A
• Rated operational voltage: 690 V AC
• Trip class: 10A
• Number of poles: 3
• Integrated thermal and magnetic protection
• Adjustable current setting range

How to use

The ABB MS116-16.0 should be installed by a qualified professional within a suitable electrical enclosure. Mount the device onto a standard DIN rail and connect the supply cables to the input terminals and the motor cables to the output terminals. Once installed, adjust the current setting dial to match the full-load current of the motor as specified on the motor nameplate. Ensure all connections are tightened to the recommended torque specifications before energizing the circuit.

What to consider before purchase

• Verify the full-load current of your motor matches the 16 A rating
• Ensure the installation environment meets the required IP protection standards
• Check compatibility with existing DIN rail mounting systems
• Confirm the voltage requirements of your specific application

Usage recommendations

Regularly inspect the circuit breaker for signs of wear or thermal damage, especially after a trip event. Ensure that the current setting remains calibrated to the motor's operational requirements to maintain optimal protection levels.