PXB9N-32 Series Miniature Circuit Breakers With Isolation Function
These MCBs are suitable for AC 50Hz/60Hz systems with a rated voltage of 230V and a rated current up to 32A. They offer isolation, overload, and short-circuit protection for electrical circuits and can be used for infrequent connection, disconnection, and conversion operations.
Product Overview
The PXB9N-32 series miniature circuit breaker is designed by CHAC Electric to meet the needs of international clients in the low-voltage electrical sector. As a professional contract manufacturer with extensive export experience, we provide high-quality ODM/OEM services. These MCBs are suitable for AC 50Hz/60Hz systems with a rated voltage of 230V and a rated current up to 32A. They offer isolation, overload, and short-circuit protection for electrical circuits and can be used for infrequent connection, disconnection, and conversion operations. Our PXB9N-32 series is suitable for various applications such as industrial, commercial, and residential buildings. We utilize advanced production technology and strict quality control to ensure the reliability and durability of our products. This makes them an ideal choice for customers seeking robust and efficient electrical protection solutions in different distribution scenarios.
Product Features
■ Compact structure and robust design
■ Low power consumption
■ Easy DIN-Rail extraction
■ Overload & short circuit protection
■ Suitable for industrial, commercial, high-rise and civil residences circuit protection.
Ordering Specification
Please specify the following when ordering:
1.Product Model: PXB9N-32
- Number of Poles: 1P+N
3.Rated Current & Tripping Curve: [e.g.: C/16A]
- Tripping Curve:B,C,D
- Rated Current (In): 6A, 10A, 13A, 16A, 20A, 25A, 32A
4.Quantity: [e.g.: 100 pcs]
Ordering Example:
PXB9N-32 1P+N C/16A 100 pcs
Type designation
Tripping curves
Dimension
Technical Specifications
| Parameter | |
| Rated voltage | 230V~ |
| Rated impulse withstand voltage (Uimp) | 4000 V |
| Rated current | 6A, 10A, 13A, 16A, 20A, 25A, 32A |
| Rated frequency | 50 Hz / 60 Hz |
| Number of poles | 1P+N |
| Rated breaking capacity (Icn/Ics) | 6000 A |
| Mechanical life | 10,000 operations |
| Electrical life | 4,000 operations |
| Tripping characteristics | B, C, D |
| Pollution degree | 2 |
| Degree of protection | IP20 |
| Standards | EN/IEC 60898-1, GB/T 10963.1 |
| Tightening torque | 2N∙m |
Table1 Tripping characteristics (Reference temp.30℃)
| Item | Tripping Curve | Test current In(A) | Initial Status | Time limit for tripping or non-tripping | Expected result | Remark |
| a | B、C、D | 1.13In | Cold | t≤1h | Non-tripping | Current smoothly rises to specified value within 5s |
| b | B、C、D | 1.45In | Following item a test | t<1h | Tripping | |
| c | B、C、D | 2.55In | Cold | 1s<t<60s(In≤32A) | Tripping | |
| d | B | 3In | Cold | t≤0.1s | Non-tripping | Switch on the power supply by closing the auxiliary switch |
| C | 5In | |||||
| D | 10In | |||||
| e | B | 5In | Cold | t<0.1s | Tripping | Switch on the power supply by closing the auxiliary switch |
| C | 10In | |||||
| D | 20In |
Note: The term “cold” means that the test is carried out at a reference calibration temperature without load before the test.
Conductor requirements and cross section
| Copper cross-section(mm2) | Rated current In(A) |
| 1 | In≤6 |
| 1.5 | 6<In≤13 |
| 2.5 | 13<In≤20 |
| 4 | 20<In≤25 |
| 6 | 25<In≤32 |
Why Choose CHAC
With 30+ years of manufacturing experience, 1100+ employees, 100M+ poles
annual capacity and 90% automated production, CHAC provides stable production capacity and strict
quality control for global OEM/ODM customers. Our in-house manufacturing system supports long-term
cooperation for electrical brands, importers and distributors.
30+
YEARS EXPERIENCE
Specialized in low-voltage electrical manufacturing
1100+
EMPLOYEES
Professional team ensures stable quality and delivery
100M+
POLES ANNUAL CAPACITY
Large-scale production capacity to meet global demand
90%
AUTOMATED PRODUCTION
Advanced automation for high efficiency and consistency
Automated Assembly Line
Testing Laboratory
Injection & Stamping
Quality Inspection
Strict quality control system ensures every product meets global standards.
What Can We Customize?
We support customization across branding, packaging, product appearance,
electrical specifications, certification requirements and engineering development. Whether customers
need private label products, market-specific parameters or new product development, CHAC can provide
flexible solutions based on project requirements.
Logo & Branding
Custom logo printing, laser marking and nameplate solutions.
Packaging
Personalización
Customized color boxes, cartons, labels and manuals.
Electrical
Personalización
Current, voltage, breaking capacity, trip curve and other
special functions.
Product
Appearance
Housing color, handle color and appearance customization.
Certification
Support
Products comply with international standards and market
requirements.
Engineering
Development
Drawing evaluation, prototype testing and mass production.
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PXB9 Series Miniature Circuit Breaker
Complete product overview for low-voltage electrical components and product selection reference.
Need Technical Documents?
Contact us for datasheets, certificates, drawings, selection guidance or OEM/ODM project support.
Frequently Asked Questions
¿Admite la personalización de productos según nuestros requisitos de diseño?
A1:Absolutely. We specialize in OEM and ODM cooperation in the low-voltage electrical field and have provided customized services for many internationally renowned companies. We offer full-process support, including R&D design, parameter adjustments, and special material selection, ensuring the product fully meets your requirements.
P2: ¿Cuál es tu capacidad de producción y Cantidad Mínima de Pedido (MOQ)?
A2: We operate a highly automated production base with an annual output of over 100 million poles for miniature circuit breakers. Our MOQ policy is flexible. We can provide competitive trial orders for small batches and dedicated production capacity guarantee plans.
P3: ¿Qué garantías hay sobre la calidad del producto y las certificaciones?
A3: Our main products are certified with CCC, CE, CB, and more, and are sold in over 30 countries and regions worldwide. The company has established a dedicated Quality Operations Center that works with the business and production departments to implement full-process quality control, ensuring products meet international standards.
Q4: Do you have the capability for product R&D and turning concepts into reality?
A4: We have a complete R&D team and digital workshops, backed by extensive customization experience serving numerous international clients. From concept proposal and sample development to mass production, we provide end-to-end technical support to help bring your ideas to life.
