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Mini Circuit Breaker

Mini Circuit Breaker

KEMA-KEUR certified new family of 6kA,10kA,15kA MCB with outstanding features of 50°C ambient temperature and energy limiting class 3.
Molded Case Circuit Breaker

Molded Case Circuit Breaker

Compact frame design with current rating from 10A to 800A available with fixed type, thermal adjustable, magnetic adjustable and thermomagnetic adjustable.
Type B Residual Current Device

Type B Residual Current Device

An ideal protection device against different leakage currents in applications of elevators, photovoltaic inverters, medical equipment, UPS devices, electric vehicle charging facilities etc.
Pre-wired String Box

Pre-wired String Box

Various string boxes with function of string isolation, over-current protection and over-voltage protection for safeguard your PV system.
Distribution Board

Distribution Board

Din rail or plug-in type single and three phase from 4way to 24way with main switch or RCD or combination incoming suitable for surface or flush mounting.
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Company News

24-Hour Time Switch: The Ultimate Solution for Efficient Control in Commercial and Residential Applications

November.22.2024

24-Hour Time Switch: The Ultimate Solution for Efficient Control in Commercial and Residential Applications
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A Comprehensive Guide to NH Fuse Switch Disconnectors: Features & Applications

November.15.2024

A Comprehensive Guide to NH Fuse Switch Disconnectors: Features & Applications
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Onesto participates in All Energy Australia to promote renewable energy technologies

October.25.2024

Onesto participates in All Energy Australia to promote renewable energy technologies
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2024-2025 PHOTOVOLTAIC SYSTEM

October.22.2024

2024-2025 PHOTOVOLTAIC SYSTEM
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Join Us at the 136th Canton Fair: Discover Our Latest Innovations

October.15.2024

Join Us at the 136th Canton Fair: Discover Our Latest Innovations
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Multi-function time relays: technical features and application advantages of the MTR series

September.06.2024

Multi-function time relays: technical features and application advantages of the MTR series
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RCBO Products in Detail: Key Devices for Electrical Safety Protection

July.25.2024

RCBO Products in Detail: Key Devices for Electrical Safety Protection
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Enhancing Electrical Safety: The Role of Arc Fault Detection Devices (AFDDs)

July.05.2024

Enhancing Electrical Safety: The Role of Arc Fault Detection Devices (AFDDs)
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ONESTO impulse relay: how does it works and helps?

April.10.2024

ONESTO impulse relay: how does it works and helps?
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Ensuring Safety and Efficiency: Onesto DC MCBs for Solar Power Systems

March.22.2024

Ensuring Safety and Efficiency: Onesto DC MCBs for Solar Power Systems
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Introducing Onesto's Modular Contactors for Enhanced Electrical Control

March.19.2024

Introducing Onesto's Modular Contactors for Enhanced Electrical Control
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ONESTO Showcases Cutting-edge Products at Light+Building Exhibition in Germany

March.05.2024

ONESTO Showcases Cutting-edge Products at Light+Building Exhibition in Germany
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Future-Proofing Homes: ONESTO's Trailblazing New Products in Intelligent Building

January.26.2024

Future-Proofing Homes: ONESTO's Trailblazing New Products in Intelligent Building
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Upgrade Your Lighting Control with Our WiFi Dimmer Module for Smart Homes

January.05.2024

Upgrade Your Lighting Control with Our WiFi Dimmer Module for Smart Homes
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Demystifying PV Combiner Box Specifications: What You Need to Know to Make an Informed Choice

December.13.2023

Demystifying PV Combiner Box Specifications: What You Need to Know to Make an Informed Choice
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ONESTO to Participate in the Fall Canton Fair, October 15-19, 2023

October.09.2023

ONESTO to Participate in the Fall Canton Fair, October 15-19, 2023
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Exploring Onesto's DC Products: Harnessing Direct Current for a Sustainable Future

September.27.2023

Exploring Onesto's DC Products: Harnessing Direct Current for a Sustainable Future
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Exploring Onesto EV Chargers: Reliable, Efficient, and Sustainable

September.19.2023

Exploring Onesto EV Chargers: Reliable, Efficient, and Sustainable
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What is the difference between a MCCB and a RCCB?

August.11.2023

What is the difference between a MCCB and a RCCB?
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How to choose between three types of solar inverters

July.21.2023

How to choose between three types of solar inverters
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The Significance of Combiner Box in Solar Power Systems

July.12.2023

The Significance of Combiner Box in Solar Power Systems
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Onesto Presents Innovative Solar Solutions at INTERSOLAR 2023 in Munich, Germany

June.16.2023

Onesto Presents Innovative Solar Solutions at INTERSOLAR 2023 in Munich, Germany
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Understanding the Pros and Cons of On-Grid and Off-Grid Solar Systems

May.26.2023

Understanding the Pros and Cons of On-Grid and Off-Grid Solar Systems
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Integrating Photovoltaic Systems with Existing Home Power Equipment

May.19.2023

Integrating Photovoltaic Systems with Existing Home Power Equipment
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How choose the right DC circuit breaker for project?

May.15.2023

How choose the right DC circuit breaker for project?
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Maintaining Your Solar Energy System: A Guide to Longevity and Optimal Performance

May.11.2023

Maintaining Your Solar Energy System: A Guide to Longevity and Optimal Performance
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Onesto to showcase latest technologies at upcoming 133rd Canton Fair

April.14.2023

Onesto to showcase latest technologies at upcoming 133rd Canton Fair
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New MCB automatic assembly and testing line put into production

August.13.2020

New MCB automatic assembly and testing line put into production
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Onesto launches full range accessories for its Pro series MCB.

July.09.2020

Onesto launches full range accessories for its Pro series MCB.
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Onesto attends 127th online Canton Fair and introduces new developments on live stream.

June.15.2020

Onesto attends 127th online Canton Fair and introduces new developments on live stream.
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Onesto exhibits at MEE2020,Dubai and attracts lots of visitors

March.03.2020

Onesto exhibits at MEE2020,Dubai and attracts lots of visitors
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KC6pro & KC10pro series MCB was awarded KEMA-KEUR certificate

February.12.2019

KC6pro & KC10pro series MCB was awarded KEMA-KEUR certificate
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ONESTO Products

Power Distribution

Power Distribution

Modular devices for circuit protection and indication in power distribution system
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Industrial Control And Protection

Industrial Control And Protection

Panel building components for industrial control and protection
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Wiring Accessiores

Wiring Accessiores

British, European, American type wall switch and socket for various option
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Solar System

Solar System

DC voltage rated products for installation and circuit protection of photovoltaic system
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Cable Management

Cable Management

Floor socket and desktop box with different shape and module sizes
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Enclosures And Distribution Board

Enclosures And Distribution Board

Plastic, steel, stainless steel waterproof enclosure and single & three phase DB
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About ONESTO

Who 
We are?

As an active player in electrical manufacturing industry over 20 years, Onesto is committed to providing quality assured products for application in power distribution, industrial control and photovoltaic system etc.


Onesto is a name of quality that focuses on customer’s safety and satisfaction. The company is operated under ISO9001:2015 Quality Management System. All the products are manufactured in conformity with BS,EN,IEC international standards and acquired CE,CB, TUV,SEMKO,SAA,KEMA-KEUR, UL certificates.

20

Years

Manufacturing experience

1

Grade

Consistent quality standard

50

Countries

Global distribution network

100%

Self-developing

Independent intellectual property right

Products Highlights

KRCS10pro
KRCS10pro
AC A TYPE
6-50A
1P+N
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KRC3-100 3P+N
KRC3-100 3P+N
AC A TYPE
63-100A
1P+N,3P+N
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KC10pro 2P
KC10pro 2P
10000A,1A-63A
B,C,D Curve
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KRCS6pro
KRCS6pro
AC A TYPE
6-50A
1P+N
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    No.1 Taishan Road, Wenzhou Bridge Industrial Zone,  beibaixiang, Yueqing City

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