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Product Overview
SGB5R-40 high breaking miniature circuit breaker features advanced structure, reliable performance and high breaking capacity. Its shell and internal components are made of impact-resistant, high flame-retardant PA66 nylon material.
Specially engineered for the European market, this MCB adopts a right-side neutral (N) pole design, which fully conforms to European local wiring conventions and standard distribution box layouts, effectively improving on-site installation efficiency for electricians.
It is suitable for 50/60Hz power systems with rated voltage up to 240V AC and rated current up to 40A. It is mainly used in residential buildings, office buildings and commercial spaces for overload and short-circuit protection of lighting circuits, power distribution branches and small equipment, and can also be used for infrequent switching of power circuits. It conforms to IEC 60898-1, EN 60898-1 and GB/T10963.1 standards.
| Parameters | Specifications |
|---|---|
| Certificates | CE |
| Rated voltage | 230/240 V AC |
| Frequency | 50/60 Hz |
| Rated current | 6, 10, 16, 20, 25, 32, 40 A |
| Poles | 1 poles optional |
| Mechanical life | 5,000 times |
| Flame-retardant | PA66 nylon material |
| Protection degree | IP20 |
| Protection functions | Over load / Short circuit protection |
| Standard | EN60898-1, IEC 60898-1 |
| Working temperature | -25°C to +70℃ |
| Breaking Capacity (Icn) | 6 kA |
| Protection type | Lighting / Motor protection optional |
| Installation mode | 35mm DIN-rail |
| Frame size | 40 A |
Frequently Asked Questions(FAQ)
Q: Is the neutral pole of SGB5R-40 on the right side?A: Yes. SGB5R-40 is specially designed with the neutral (N) pole on the right, which matches the standard wiring convention of European distribution boxes, aligns with local electricians' operating habits, and greatly improves on-site wiring and installation efficiency.
Q: Can SGB5R-40 MCB be used as a household main incoming breaker?A: SGB5R-40 is a 1P+N structure, which breaks the live wire and provides neutral line continuity. It is ideal for lighting circuits and individual branch circuits. For household main incoming protection that requires breaking both live and neutral poles, we recommend our 2-pole MCB series. For heavy-duty industrial main protection, our MCCB series is more suitable.
Q: What applications is SGB5R-40 MCB suitable for?A: SGB5R-40 MCB is widely used in residential lighting circuits, indoor socket branches, light commercial distribution cabinets and small-power equipment protection. It is compatible with 230/240V AC single-phase systems and fits mainstream European distribution enclosures.
Q: Why is 6kA breaking capacity suitable for household and light-commercial scenarios?A: The short-circuit current in most residential and light-commercial distribution systems is below 6kA. 6kA breaking capacity ensures safe and reliable short-circuit interruption, making it a cost-effective and stable choice for daily power protection.
Q: What certificates does SGB5R-40 MCB have?A: SGB5R-40 MCB is certified with CE, CB, ISO9001 and CCC. It fully complies with the EN60898-1 standard, meets European market access requirements, and is suitable for wholesale, distribution and engineering procurement across Europe.
Q: What is the service life of SGB5R-40 MCB?A: Its mechanical life reaches 5,000 switching cycles. Under normal installation and operating conditions (-25℃ ~ +70℃), the expected service life is 8–12 years. It is recommended to replace the product if obvious heating, abnormal tripping or shell aging occurs.
Q: What installation method does SGB5R-40 MCB adopt?A: SGB5R-40 adopts standard 35mm DIN-rail mounting, which is compatible with most European standard distribution boxes. With IP20 protection degree, it is designed for indoor installation only.
Company Profile
SINGI is a premier manufacturer of the SGB5R-40 series MCB, with over 30 years of production expertise in low-voltage circuit protection. The SGB5R-40 line is specially developed for the European market and produced in our ISO9001-certified factory with automated assembly lines to ensure consistent quality and reliability.
Trusted by European wholesalers and electrical distributors, SINGI's SGB5R-40 breakers carry CE and CB certifications and comply with EN 60898-1 standards, making them a cost-effective and safety-compliant solution for the European low-voltage electrical market. OEM and custom packaging services are available.
key word:MCB ,Miniature circuit breaker,1P MCB,China manufacturer
Application Scenario
1.Residential and Commercial Buildings
Residential Electrical Protection: In ordinary residential houses, MCBs are used to protect circuits for lighting, sockets, air conditioners, water heaters, and other appliances. If a short circuit or overload occurs in an appliance, the MCB can shuts off the power quickly , preventing overheating and fires from wires, ensuring the safety of people and property.
Commercial Space Protection: In commercial space like office building, shopping mall, and hotel, MCBs are used to protect circuits for various office equipment, lighting systems, and air conditioning systems. The MCBs can prevent circuit overloads and short circuits quickly which is caused by equipment failure or human error, ensuring the safety of people and property.
2.Industrial Sector
Small Equipment Protection: In industrial production, many small equipment and machinery require MCBs for circuit protection. For example, small machine tools and power tools require MCBs to prevent damage from abnormal current flow during operation, extending their service life.
Control Circuit Protection: In complex industrial control systems, MCBs are used to protect the normal operation of control circuits. They ensure that power is promptly cut off in the event of a fault, preventing damage to the control system and thus ensuring the stability and safety of the entire industrial process.
3.Lighting Systems
Public Lighting: In public lighting spaces like street lighting, square lighting, and park lighting, MCBs are used to protect lighting circuits. MCBs can prevent short circuits and overloads which is caused by lamp failures or aging wiring, ensuring the reliability of the lamps and providing a safe nighttime environment.
Large Indoor Lighting: MCBs also is important in the indoor lighting systems of large buildings, like shopping malls, stadiums, and exhibition halls. They protect lighting circuits stably, preventing electrical failures that can occur due to a large number of lamps and complex wiring, and ensuring the normal operation of indoor lighting.
4. Low-Voltage Power Distribution System
Core Component of Distribution Boxes: In low-voltage power distribution systems, MCBs are standard features in distribution boxes and cabinets. They provide independent protection and control for each branch circuit and can be flexibly configured based on actual power load. They are key to achieving intelligent power distribution management and comprehensive system protection.
A safety benchmark for temporary power use: Construction sites, outdoor activities, and other temporary power-using environments present complex electrical environments and numerous potential safety hazards. MCBs provide essential safety protection for these temporary equipment and lines, ensuring proper operation even in these complex power-using environments and minimizing electrical safety incidents.
