Media 1
Media 2
YTNU4-40 Miniature Circuit Breaker Manufacturer
YTNU4-40 is a compact miniature circuit breaker designed for reliable overload and short-circuit protection in residential, commercial, and industrial electrical systems. As a professional miniature circuit breaker manufacturer, we support suppliers, wholesalers, distributors, and OEM/ODM buyers with stable quality and competitive wholesale prices.
Product Parameters
- Model: YTNU4-40
- Product Type: Miniature Circuit Breaker
- Application: Electrical distribution, circuit protection, control panels
- Buyer Support: OEM/ODM, wholesale, distributor supply, factory customization
Product Functions
- Short circuit protection
- Overload protection
- Control Isolation
- Circult breaker is sultable for low-voltage terminaldistribution in industrial, civill building,energy
and infrastructurefields.
Standard
- GB/T 10963.1
- IEC 60898-1
Technical parameter
| Technical parameter | |
| Corrente nominal | 1,2,3,4,5,6,10,16,20,25,32,40,50,63A |
| Rated working voltage | 230V/400VAC |
| Maximum operating voltage | 440VAC |
| Breaking capacity | 4500A |
| Impulse withstand voltage | 4kV |
| Mechanicallfe | 20000times |
| Electrical life | 10000times |
| Meio ambiente | Operatingambient temperature:-30°C -+70°C |
| Altitude | ≤2000m |
Product Accessory
OF auxiliary contact (left mounted), SD alarm contact (left mounted),
MX shunt release(right mounted), MX+OF shunt+auxiliary(right mounted
MN undervoltage release(right mounted),
MV overvoltage release (right mounted),
MV+MN overvoltage/undervoltage release (right mounted)
Wiring & Installation
- It can adopt either upper inlet and lower outlet method or lower inlet and upperoutlet method without the need for capacity reduction
- Terminal wiring area Suitable for wire of 16mm’and below
- Modular structure enables easyinstallation on standard DIN rall
- It can be installed vertically,horizontally or on the back without affecting its characteristic
- Rated torque:2.5Nm
Tripping characteristic
C type curve:
- Protection of general load and distribution cable
- Tripping characteristic: Instantaneous tripping range (5-10) In
D type curve:
- Protection of the impact load with high starting current
- Tripping characteristic: instantaneous tripping range (10-20)in
Product Details
The YTNU4-40 miniature circuit breaker is an electrical protection device used to automatically disconnect circuits during overload or short-circuit conditions. It helps protect cables, equipment, distribution boards, and electrical systems from damage caused by abnormal current.
As a trusted miniature circuit breaker manufacturer and factory in China, we provide the YTNU4-40 series for industrial users, commercial users, electrical contractors, wholesalers, and distributors. This MCB is widely used in lighting systems, power distribution panels, control cabinets, commercial buildings, industrial facilities, and electrical installation projects.
The YTNU4-40 offers compact structure, stable tripping performance, easy installation, and reliable circuit protection. OEM/ODM customization is available for B2B customers who require specific branding, packaging, technical parameters, or bulk procurement solutions. With factory-direct supply and wholesale price support, it is an ideal choice for electrical product suppliers, distributors, and project contractors.
Recursos do produto
- Reliable overload and short-circuit protection
- Compact design for distribution boards and control panels
- Suitable for industrial, commercial, and electrical contractor projects
- Factory-direct supply with OEM/ODM customization
- Competitive wholesale price for distributors and wholesalers
PERGUNTAS FREQUENTES
1. Are you a miniature circuit breaker manufacturer or supplier?
Yes. We are a miniature circuit breaker manufacturer and supplier offering factory-direct YTNU4-40 MCB products for wholesalers, distributors, and electrical contractors.
2. Can the YTNU4-40 miniature circuit breaker be customized?
Yes. We support OEM/ODM customization, including branding, packaging, labeling, and selected technical requirements for B2B buyers.
3. What applications is the YTNU4-40 MCB suitable for?
The YTNU4-40 miniature circuit breaker is suitable for commercial buildings, industrial facilities, distribution boards, electrical panels, and contractor installation projects.
4. Do you offer wholesale prices for distributors?
Yes. As a factory and manufacturer, we provide competitive wholesale price support for distributors, suppliers, wholesalers, and bulk buyers.
5. Who are the target buyers for this product?
The YTNU4-40 is designed for industrial users, commercial users, electrical contractors, electrical product suppliers, wholesalers, and distributors.
Are you a miniature circuit breaker manufacturer or supplier?
Yes. We are a miniature circuit breaker manufacturer and supplier offering factory-direct YTNU4-40 MCB products for wholesalers, distributors, and electrical contractors.
Can the YTNU4-40 miniature circuit breaker be customized?
Yes. We support OEM/ODM customization, including branding, packaging, labeling, and selected technical requirements for B2B buyers.
What applications is the YTNU4-40 MCB suitable for?
The YTNU4-40 miniature circuit breaker is suitable for commercial buildings, industrial facilities, distribution boards, electrical panels, and contractor installation projects.
Do you offer wholesale prices for distributors?
Yes. As a factory and manufacturer, we provide competitive wholesale price support for distributors, suppliers, wholesalers, and bulk buyers.
Who are the target buyers for this product?
The YTNU4-40 is designed for industrial users, commercial users, electrical contractors, electrical product suppliers, wholesalers, and distributors.
