Hager MB116A Miniature Circuit Breaker, 1-Pole, 16A, B-Curve, 6kA

The Hager MB116A is a high-quality 1-pole miniature circuit breaker engineered to provide dependable protection for electrical circuits in both residential and commercial environments. This device is designed to detect and interrupt overcurrents, effectively safeguarding wiring and connected equipment from the risks associated with overloads and short circuits. With its robust construction and precise tripping mechanism, it ensures consistent performance and long-term operational stability for standard electrical distribution systems.

Advantages

This miniature circuit breaker offers exceptional reliability due to its high-quality manufacturing standards. The B-curve tripping characteristic makes it particularly suitable for circuits with low surge currents, such as lighting and general-purpose power outlets. Its compact modular design allows for easy installation in standard distribution boards, while the 6kA breaking capacity provides a sufficient safety margin for typical domestic and light commercial applications. The device is built for durability, supporting up to 20,000 operating cycles, which ensures a long service life and minimal maintenance requirements.

Suitable for

• Residential lighting circuits
• General-purpose power socket circuits
• Small commercial electrical installations
• Protection of standard electrical appliances

When it may not be suitable

This circuit breaker is not intended for high-inrush current applications, such as large motors or heavy industrial machinery, where a C or D-curve breaker would be required to prevent nuisance tripping. It is also not suitable for outdoor environments without an appropriate weather-resistant enclosure due to its IP20 protection rating.

Key specifications

• Number of poles: 1
• Rated current: 16 A
• Tripping curve: B
• Breaking capacity: 6 kA
• Voltage rating: 400 V
• Selectivity class: 3
• Mechanical endurance: 20,000 cycles
• Protection rating: IP20

How to use

The Hager MB116A is designed for mounting on a standard DIN rail within an electrical distribution board. Installation should be performed by a qualified electrician in accordance with local electrical regulations. The device is snapped onto the rail and connected to the supply and load cables using the integrated terminals. Ensure that all connections are tightened to the manufacturer's specified torque to prevent overheating. Once installed, the toggle switch can be used to manually isolate the circuit for maintenance or to reset the breaker after a fault has been cleared.

What to consider before purchase

• Verify that the 16A current rating matches the requirements of your circuit wiring and connected loads.
• Ensure the B-curve characteristic is appropriate for your specific application.
• Confirm that the 6kA breaking capacity meets the short-circuit current requirements of your electrical installation.
• Check the available space in your distribution board for a 1-module wide device.

Usage recommendations

Regularly inspect the distribution board for signs of heat or loose connections. If the circuit breaker trips, investigate the cause of the overload or short circuit before resetting the device to ensure continued safety.