Circuit breaker BEMKO 3-pole 20 A B20/3 model 1361580

The BEMKO 3-pole circuit breaker, model 1361580, is a high-quality protective device engineered to safeguard three-phase electrical circuits against overcurrent and short-circuit conditions. This component is essential for maintaining electrical safety in distribution boards, ensuring that power is interrupted automatically when faults occur to prevent damage to wiring and connected equipment. Built to comply with international standards, this breaker provides reliable performance for both commercial and industrial electrical systems.

Advantages

This circuit breaker offers robust protection through its 3-pole design, allowing for the simultaneous disconnection of all three phases in a three-phase system. Its B-type tripping characteristic ensures a balanced response to overcurrent, making it suitable for standard resistive and inductive loads. The device is constructed for durability and ease of installation in standard distribution panels, providing a long service life and consistent operational reliability under normal environmental conditions.

Suitable for

• Three-phase electrical distribution boards
• Industrial machinery power supply protection
• Commercial building electrical installations
• Protection of standard resistive and inductive loads

This circuit breaker may not be suitable for applications requiring a C or D tripping curve, such as circuits with high inrush currents like large motors or transformers. It is also not intended for use in environments outside the specified operating temperature range of -5°C to 30°C or in highly corrosive or hazardous atmospheres.

Key specifications

• Rated current: 20 A
• Number of poles: 3
• Tripping characteristic: B
• Short-circuit breaking capacity: 6000 A
• Rated voltage: 240 / 415 V AC
• Frequency: 50 / 60 Hz
• Dimensions: 79 x 53 x 67 mm
• Operating temperature: -5°C to 30°C

How to use

The circuit breaker should be installed by a qualified electrician onto a standard DIN rail within a distribution board. Ensure that the power supply is disconnected before beginning the installation. Secure the device firmly onto the rail and connect the incoming and outgoing three-phase conductors to the appropriate terminals, ensuring all connections are tightened to the manufacturer's specified torque. Once installed, the breaker can be switched on manually using the toggle lever. In the event of a trip, the lever will move to the off position, and it can be reset manually after the fault has been identified and cleared.

What to consider before purchase

• Verify that the 20 A rating matches your circuit requirements
• Ensure the B-curve is appropriate for your specific load type
• Check that the physical dimensions fit your existing distribution board space
• Confirm compatibility with your three-phase electrical system voltage

Usage recommendations

Always ensure that the total load on the circuit does not exceed the 20 A rated current to prevent nuisance tripping. Regularly inspect the breaker for signs of wear or damage and test the manual switching mechanism periodically to ensure continued functionality.