DC MCB for PV

Trustable Circuit Breaker Manufacturer

KRIPAL DC Miniature Circuit Breakers are specifically designed for solar PV systems. Equipped with overload protection, they ensure the safe operation and performance optimization of DC solar energy systems.

Get A Quote
DC MCB for PV
UKB7Z DC MCB 1P 63A 250V DC Mini Circuit Breaker 6kA
  • certificate

UKB7Z DC MCB 1P 63A 250V DC Mini Circuit Breaker 6kA

UKB7Z miniature circuit breaker provides advanced electrical protection for DC systems with a rated voltage up to 1000V and a rated current up to 63A.

View Details
UKB7Z 2P 63A 500V DC Mini Circuit Breaker for PV solar DC MCB CE certified
  • certificate

UKB7Z 2P 63A 500V DC Mini Circuit Breaker for PV solar DC MCB CE certified

UKB7Z miniature circuit breaker provides advanced electrical protection for DC systems with a rated voltage up to 1000V and a rated current up to 63A.

View Details
UKB8Z DC Mini Circuit Breaker 1Pole 63A 300V DC MCB 6kA
  • certificate

UKB8Z DC Mini Circuit Breaker 1Pole 63A 300V DC MCB 6kA

The UKB8Z-63 high-breaking-capacity DC miniature circuit breaker is designed for use in photovoltaic (PV) DC systems.

View Details
UKB8Z DC Miniature Circuit Breaker 6kA 4P 63A  1200V DC MCB
  • certificate

UKB8Z DC Miniature Circuit Breaker 6kA 4P 63A 1200V DC MCB

The UKB8Z-63 high-breaking-capacity DC miniature circuit breaker is designed for use in photovoltaic (PV) DC systems.

View Details

Download Catalog

For more information, please download the album.

DC MCB Circuit Breakers by Kripal

DC Miniature Circuit Breakers (DC MCB) are designed to offer reliable protection against overloads and short circuits in low-voltage DC circuits. Available in various current ratings, they are suitable for applications ranging from small solar systems to large commercial setups. Their compact design ensures efficient use of space in distribution boards, making them ideal for installations where space is limited.

Unlike AC circuits, DC circuits can be more challenging to interrupt, but DC MCBs are built to effectively handle this task. With their high breaking capacity, they quickly disconnect faulty circuits, preventing damage to sensitive electrical equipment. These circuit breakers are equipped with a clear trip indicator for easy fault detection and offer a long mechanical lifespan, ensuring consistent and dependable performance. Built to withstand harsh environmental conditions, their robust construction guarantees durability and resistance to external impacts. Furthermore, they are fully compliant with international standards and are versatile enough to be used in various applications, including solar power systems, telecommunications, and other DC-powered equipment.

Kripal is committed to delivering cutting-edge, high-performance DC MCB (Miniature Circuit Breaker) solutions, designed to protect electrical systems from overloads and short circuits. Our DC MCBs are engineered for a wide range of applications, including photovoltaic (solar) systems, energy storage systems (ESS), and other DC-based circuits. With reliable and efficient protection, Kripal’s DC MCBs ensure that your electrical systems operate safely and without interruption.

Why Choose Kripal DC MCBs?

Kripal’s DC MCBs feature a modular design, making them easy to install and integrate into various electrical systems. This design provides flexible protection solutions for your circuits, allowing for efficient customization.

Our DC MCBs are fully compliant with IEC/EN606947-2 standards, ensuring that they meet international quality and safety standards, offering global compatibility and reliability. Equipped with an indicator function, the DC MCBs provide clear visibility in the contact position, allowing users to easily monitor the status.

These circuit breakers are ideal for a wide range of applications, including solar power systems, DC circuits, energy storage, and other critical electrical infrastructures, ensuring robust protection across different industries.

Why Choose Kripal DC MCBs?

Applications of Kripal DC MCBs

Explore Solution >
Aviation & Ground Support Equipment (GSE)

Aviation & Ground Support Equipment (GSE)

UKB7Z miniature circuit breaker provides advanced electrical protection for DC systems with a rated voltage up to 1000V and a rated current up to 63A.

Explore More >
Building Management & Intelligent Construction

Building Management & Intelligent Construction

UKB7Z miniature circuit breaker provides advanced electrical protection for DC systems with a rated voltage up to 1000V and a rated current up to 63A.

Explore More >
Data Centers & Critical Facilities

Data Centers & Critical Facilities

UKB7Z miniature circuit breaker provides advanced electrical protection for DC systems with a rated voltage up to 1000V and a rated current up to 63A.

Explore More >

What Makes Kripal’s DC MCB Different?

Kripal DC MCBs offer superior protection, designed to safeguard against both overloads and short circuits in low-voltage DC systems.

Their adaptability makes them suitable for a wide range of applications, including commercial, residential, and industrial DC systems. With a modular design, these MCBs are easy to integrate into existing circuits, providing long-term, reliable protection for your electrical infrastructure.

Frequently Asked Questions

Explore FAQ >
The UKB7Z is specifically designed for DC electrical systems, making it an ideal choice for applications like solar photovoltaic (PV) systems, battery energy storage systems, telecommunications base stations, and industrial DC power distribution. It effectively protects DC circuits from damage caused by overload and short-circuit currents.
The principles of arc extinguishment for DC and AC electricity are fundamentally different. DC arcs are much harder to quench, placing higher demands on the circuit breaker. The UKB7Z is engineered specifically for DC, with an internal structure and arc-extinguishing system that can safely and reliably interrupt DC fault currents. Using an AC breaker in a DC circuit is extremely dangerous and can lead to unextinguished arcs, equipment damage, or even fire.
Ensuring installation compatibility and easy integration. However, the core differences are:
  • Application: UKB7Z is for DC circuits only; UKB7 is for AC circuits.
  • Compliance Standard: UKB7Z complies with the GB/T 14048.2 standard (industrial grade), while UKB7 follows GB/T 10963.1. This means the UKB7Z offers superior DC breaking capacity and a higher electrical lifespan.
  • Internal Design: The UKB7Z is specifically optimised for the safe extinguishing of DC electrical arcs.
It is absolutely critical! Reverse connection is strictly prohibited! The magnetic trip mechanism inside the UKB7Z has a specific polarity direction. Correct connection of the power supply poles is essential to ensure the mechanism operates reliably and trips instantly during a short-circuit event. Incorrect wiring can cause the protection function to fail, preventing the breaker from tripping when needed and creating a serious safety hazard.
The breaker's rated current should be slightly higher than the maximum continuous operating current of the circuit it protects. We recommend: Calculate the maximum output/input current of your PV string or load. Select a UKB7Z with a rated current approximately 1.25 times this calculated value. This provides necessary overload margin while ensuring sensitive protection. If unsure, please contact our technical team for free selection support.
Yes. The UKB7Z is designed for infrequent switching of circuits. This means you can use it to isolate the power supply for system maintenance, but it is not intended for frequent daily operation, like a light switch.
KRIPAL specialises in the field of electrical protection. Our advantages include:
  • Professional Design & Manufacturing: Full in-house control from design, material selection, to production.
  • Rigorous Quality Control: Our laboratory is certified by authoritative bodies, providing a powerful guarantee for the superior performance and quality of every UKB7Z.
Yes. The UKB7Z DC Miniature Circuit Breaker strictly complies with the GB/T 14048.2 national standard. This is a mandatory performance standard for low-voltage switchgear and controlgear, guaranteeing the product's high reliability and safety in DC applications.

How can we assist you?

Tell us a bit more so we can route your request to the right expert.