Isolator Switch Manufacturer | MOREDAY
An isolator switch is used to safely disconnect electrical circuits from the power supply during maintenance or emergency situations. In solar photovoltaic systems, DC isolator switches are commonly installed between solar panels and inverters to ensure safe system isolation and protection.
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MOREDAY Isolator Switch Product Lineup - Complete Technical Specifications
MDIS-40 Isolator Switch
- Poles: 4P
- Rated Voltage: 600-1200V DC
- Ui: 1200V DC
- Rated Current: 8-32A
- Protection Degree: IP20
- Installation: DIN Rail
- Standard: IEC60947-3
- Mechanical Life: ＞15000
- Electric Life: ＞300
MDIS-40MD Isolator Switch
- Poles: 4P
- Rated Voltage: 600-1200V DC
- Ui: 1200V DC
- Rated Current: 8-32A
- Protection Degree: IP66
- Installation: Wall Mounted
- Standard: IEC60947-3
- Mechanical Life: ＞15000
- Electric Life: ＞300
MDB1Z-63 Miniature Circuit Breaker
- Poles: 1P, 2P, 3P, 4P
- Rated Current: 1A-63A (18 ratings)
- Breaking Capacity: 6000A (In ≤ 6A to 40A), 4500A (In 50A, 63A) Rated Voltage: 1P: 240/415V~, 2P/3P/4P: 415V~
- Rated Voltage: 1P: 240/415V~, 2P/3P/4P: 415V~
- Curve Code: B, C, D
- Mechanical Durability: 10,000 cycles
- Electrical Durability: 4,000 cycles
- Protection Degree: IP20/IP40
MDB1Z-63 Miniature Circuit Breaker
- Poles: 1P, 2P, 3P, 4P
- Rated Current: 1A-63A (18 ratings)
- Breaking Capacity: 6000A (In ≤ 6A to 40A), 4500A (In 50A, 63A) Rated Voltage: 1P: 240/415V~, 2P/3P/4P: 415V~
- Rated Voltage: 1P: 240/415V~, 2P/3P/4P: 415V~
- Curve Code: B, C, D
- Mechanical Durability: 10,000 cycles
- Electrical Durability: 4,000 cycles
- Protection Degree: IP20/IP40
Why Choose MOREDAY?
MOREDAY is a professional manufacturer with over 17 years of experience in designing, producing, and exporting miniature circuit breakers. Located in Yueqing – China’s “Electric Device Metropolis” – we serve distributors, contractors, and electrical engineers across 30+ countries with high-quality, IEC/CE/RoHS certified circuit protection solutions.
- Moreday isolator switches provide safe and reliable circuit disconnection for electrical systems.
- Our DC isolators are specially designed for photovoltaic systems and solar installations.
- Products are manufactured according to international safety standards to ensure reliable operation.
- High-quality materials ensure long service life even in demanding environments.
- Our experienced team provides fast assistance for product selection and technical questions.
Precision Engineering - Inside MOREDAY Isolator Switch Technology
At MOREDAY, we believe that true quality is revealed in the details. Our product manufacturing philosophy centers on “Sublime Micro-Engineering Narratives” – where every component, from the smallest spring to the largest contact assembly, represents surgical precision and artistic interpretation of technical excellence.
- Fire-Retardant Casing: The shell is made of PA66 nylon material, offering V0-grade flame retardancy and high impact resistance.
- Prevention of Accidental Contact and Operation: Each switch features an independent lockout hole for the insertion of a padlock.
- Ensures the formation of a visible electrical isolation gap upon disconnection, thereby enhancing safety.
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Different Types of Isolator Switches
Isolator switches are available in different configurations depending on the voltage level and installation environment. The following comparison helps you select the right isolator switch for your electrical or solar application.
Type | Voltage Range | Typical Application |
|---|---|---|
DC Isolator Switch |
600V – 1500V DC |
Solar PV systems |
AC Isolator Switch |
230V – 690V AC |
Electrical distribution |
Outdoor Isolator |
Up to 1500V |
Solar installations |
Enclosed Isolator |
Various |
Industrial equipment |
Applications
Electrical Solutions for Every Need
As a trusted electrical equipment manufacturer, MOREDAY delivers high-performance electrical solutions designed for residential, commercial, industrial, and renewable energy applications—providing cost savings, operational efficiency, and reliability across diverse industries worldwide.
Solar PV Systems
Used to safely disconnect solar panels from inverters during maintenance.
Solar Combiner Boxes
Provides isolation for photovoltaic strings and DC circuits.
Industrial Electrical Systems
Ensures safe isolation of electrical circuits during servicing.
Power Distribution Panels
Used to disconnect power supply for equipment maintenance.
Isolator Switch Factory
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More Than Just a Isolator Switch Manufacturer
At MOREDAY, we go beyond manufacturing Isolator Switch by offering a suite of value-added services tailored to meet your project needs. Our commitment to excellence ensures that every customer receives personalized attention, expert guidance, and seamless support throughout their journey with us.
Technical Consultation
Our engineering team provides professional DC protection design support for solar PV systems. From breaker selection to full combiner box configuration, we help you ensure safety, compliance, and long-term reliability.
OEM & Custom Solutions
We support logo printing, customized voltage ratings, special tripping curves, and private label packaging. MOREDAY helps distributors and project contractors build competitive branded products for local markets.
Certified Quality Assurance
Our products comply with CE, CB, and TÜV standards. Each unit undergoes strict testing for breaking capacity, temperature rise, and durability to meet international project requirements.
Global Project Experience
MOREDAY products are widely used in solar power plants, energy storage systems, EV charging stations, and industrial applications across Europe, Asia, and Africa.
Knowledge About Isolator Switch
- What Is a DC Isolator Switch？
DC isolator switch (DC switch-disconnectors) are electrical devices used in DC (direct current) systems to switch and disconnect the flow of current. These switch-disconnectors are designed to handle high DC voltages and currents.
- Difference Between Isolator and Circuit Breaker
While both interact with power flow, confusing them can lead to unsafe repairs, equipment damage, or even fires. The critical distinction? An isolator is a manual “off switch” for safe maintenance, while a circuit breaker is an automatic guardian against overloads.
- Where Is a Solar Isolator Installed？
The isolator switches are usually located close to the solar panels on the roof and close to the DC end of the inverter, which means the panels can be disconnected both on the ground and on the roof.
- Do Solar Systems Need a DC Isolator
DC isolator switches can be used in most types of solar PV systems, but their specific implementation may vary depending on the system configuration. They are essential for both grid-tied and off-grid solar installations, as well as hybrid systems.
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We provide samples for free, you just need to tell us what you need