DC Circuit Breaker Alpha+ 500VDC 2P, 40A, C-curve 6kA - EPB63MDC2C40

DC Circuit Breaker Alpha+ 500VDC 2P, 40A, C-curve 6kA - EPB63MDC2C40

The Maxge Alpha+ 500VDC 2P, 40A DC Circuit Breaker is a protective circuit breaker specifically designed for direct current (DC) installations.

With a rated voltage of 500VDC, a rated current of 40A and a two-pole (2P) configuration, this device ensures effective protection against overloads and short circuits, providing reliability, safety and performance in modern applications, especially in photovoltaic installations, battery storage and industrial DC power grids.

Thanks to its 6kA breaking capacity, the device can safely interrupt short-circuit currents of up to 6,000 amperes, preventing damage to the installation and protecting connected equipment.
It is therefore a robust and reliable solution for DC applications where high protection capacity is required.

This circuit breaker is part of Maxge's Alpha+ DC series, a technical range that integrates advances designed for the specific needs of direct current, where the switching conditions and the behaviour of the electric arc are different from those of alternating current.

Main features of the Alpha+ 500VDC 2P, 40A DC Circuit Breaker DC Alpha+ 500VDC 2P, 40A

Complete phase and neutral protection

Being from 2-pole (2P), This circuit breaker protects and disconnects the phase and neutral at the same time. This ensures that the circuit is completely isolated when the circuit breaker is manually tripped or switched off, increasing safety during maintenance or servicing work on the electrical panel.

This type of protection is particularly recommended in direct current installations where it is necessary to cut off both poles to ensure complete isolation of the circuit.

Therefore, this model is ideal for applications where a higher level of safety in circuit switching is required.

Moderate and high power loads

With a 40 ampere rated current, This circuit breaker is perfect for protecting circuits with medium and high power loads, such as inverter auxiliary power supplies, strings of higher current solar panels and DC installations with demanding consumption.

Provided that the installation is properly carried out, the circuit breaker guarantees stable, safe operation without unnecessary outages.

Stability without nuisance tripping

The firing curve C allows the circuit breaker to withstand moderate current peaks, such as those that occur when switching on certain electrical appliances, without causing unnecessary tripping.

This feature makes it especially suitable for medium and high power photovoltaic systems, battery banks, DC inverters, industrial electronic equipment, and energy storage systems.

This means fewer unplanned outages, greater convenience of use, and good protection against real overloads and short circuits.

Therefore, the C-curve is one of the most commonly used curves in general installations.

High resistance

Your 6 kA breaking capacity means that this circuit breaker is capable of safely interrupting short-circuit currents of up to 6,000 amperes without damage or loss of protective properties.

This breaking capacity reduces the risk of severe electrical damage and promotes robust system protection.

In other words, this circuit breaker provides a reliable level of protection for everyday use.

Safety in direct current (DC) installations

In direct current, circuit interruption is more demanding than in alternating current due to the absence of natural zero crossing.

For this reason, this circuit-breaker is designed with internal arc extinguishing systems adapted to DC, guaranteeing a safe and durable cut.

Consequently, this circuit breaker offers a robust and reliable solution for protecting DC electrical installations with currents up to 40A.

Quick installation and practical design

The DC Alpha+ 500VDC 2P, 40A DC circuit breaker is designed for DIN rail mounting, It is quick and easy to install in any standard electrical panel.

Your compact 36 mm wide design (18 mm per pole), helps to optimise the space available in the frame and features window for circuit marker y a visual status signalling (on/off), The circuit it protects can be easily identified.

In addition, it has some terminals that are prepared for cables suitable for this current (25 mm² in flexible cable and 35mm² in rigid cable).
This ensures firm, secure and durable connections.

Alpha+ 500VDC 2P, 40A, C-curve, 6kA DC Circuit Breaker - EPB63MDC2C40

This circuit breaker protects the circuit in two ways:

• Thermal protection (overload): cuts off the current if there is a sustained overload, preventing both overheating of the cables and possible damage to the installation.
• Magnetic protection (short circuit): acts almost instantly when there is a strong short-circuit. When this happens, this circuit breaker cuts off the power supply and protects both the installation and the connected equipment.

In this way, the circuit breaker protects against both progressive increases in current and sudden faults, ensuring a fast and effective response.

Main advantages of the DC Alpha+ 500VDC 2P, 40A DC circuit breaker

This circuit breaker has the following advantages:

• Safe DC operation: guarantees a correct extinguishing of persistent electric arcs in direct current.
• Optimised for direct current up to 500 V: provides safety in installations with high voltages.
• 2-pole for complete disconnection of the DC circuit: improves safety in maintenance and operation.
• Balanced C-curve: withstands common start-up peaks, without nuisance tripping.
• High cutting capacity: its value of 6 kA makes it possible to protect circuits with high safety requirements.
• Quick and modular installation: is easily mounted on DIN-rail, allowing tidy extensions.
• Integrated overload and short-circuit protectionCombination of thermal and magnetic protection.
• Reduces contact wear and prolongs service life: thanks to technical solutions for arc control and adapted geometries.

Technical Information for Alpha+ 500VDC 2P, 40A, C-curve, 6kA DC Circuit Breaker - EPB63MDC2C40

Technical data sheet DC Alpha+ 500VDC 2P, 40A DC circuit breaker