FB2L-63 Residual Current Circuit Breaker with Overcurrent Protection – Electromagnetic Type
The FB2L-63 RCBO provides overload, short-circuit and residual-current protection within the published 10A–50A range. Its verified product data lists 6kA Icu = Ics, 1P+N and C. Final selection must match the conductor, load, prospective fault current, installation system and applicable local rules.
Product Overview
FB2L-63 is a plug-in residual current circuit breaker with integral overcurrent protection for 240V AC systems. It combines C-curve overload and short-circuit protection with Type AC, 30mA residual-current protection. It should be selected as an RCBO, not as an MCB with implied leakage protection.
The model data references IEC 61009-1. Standards, certification scope and technical documents must be confirmed for the ordered configuration and destination market.
Key Features
Typical Applications
Typical projects include compatible single-phase distribution boards where combined overcurrent and residual-current protection is specified. Confirm the expected residual-current waveform, required sensitivity, conductor size, prospective fault current, board fit and local wiring rules before ordering.
Applications and Selection Guide
Use the product-specific values below as a shortlist, then validate the complete circuit design. Product ratings do not replace a fault-current study, conductor calculation, coordination review or applicable installation rules.
| Selection point | FB2L-63 option | What the project must confirm |
|---|---|---|
| Protection function | Overload, short circuit and residual current | Do not substitute an MCB where residual-current protection is required |
| Residual-current data | Type AC; IΔn 30mA; IΔm 2,000A | Confirm waveform type and sensitivity against the circuit and local rules |
| Rated current and curve | 10A–50A; C curve | Coordinate with conductor ampacity and load inrush |
| Fault interruption | 6kA Icu = Ics | Prospective short-circuit current must not exceed the applicable rating |
| Board fit | Plug-in mounting | Confirm compatible base, dimensions, connection arrangement and maintenance space |
Breaking Capacity
6kA Icu = Ics is the published product value. Confirm the prospective short-circuit current at the installation point.
Trip and Load Behaviour
C is the available trip/protection option. Match it to load inrush and required disconnection performance.
Pole Configuration
Available arrangement: 1P+N. Confirm which conductors must be switched and protected under local rules.
RCBO Protection Function
This model adds Type AC 30mA residual-current protection to overcurrent protection.
Ordering Guide
- Specify the exact model: FB2L-63.
- State the required current rating within 10A–50A.
- Confirm pole arrangement: 1P+N.
- Confirm trip or protection option: C.
- Provide system voltage, expected fault level, destination market, quantity and any document requirements.
Installation and Coordination Checks
- Verify conductor material and cross-section against the circuit calculation and the published terminal range.
- Confirm the prospective short-circuit current does not exceed the applicable breaking rating.
- Check upstream/downstream coordination, enclosure temperature, grouping, altitude and required clearances.
- Installation, isolation, testing and maintenance must be carried out by qualified personnel under applicable rules.
Type designation
Tripping curves
Dimensions(mm)
Technical Specifications
| Parameter | |
| Bracket rating current | 50A |
| Number of poles | 1P+N |
| Feature | Overload and short circuit protection |
| Rated frequency f(HZ) | 50/60Hz |
| Leakage trip mode | Electronic formula |
| Leakage type | Type AC |
| Rated operating voltage Ue(V AC) | 240V~ |
| Rated current In(A) | 10,16,20,25,32,40,50A |
| Rated insulation voltage Ui(V) | 500V |
| Rated impulse withstand voltage Uimp(kA) | 4kV |
| Rated residual current IΔn | 30mA |
| Rated remaining making and breaking capacity IΔm | 2000A |
| Ratedoperating short-circuit breaking capacity (KA) | 6kA |
| Rated limit short-circuit breaking capacity (kA) | 6kA |
| Current limiting class | 3 |
| Instantaneous trip characteristics | Electromagnetic type |
| Trip type | C |
| Electrical service life | 4000 times |
| Service life of machinery | 10000 times |
| Class of protection | IP20 |
| Wiring capability (mm2) | 1 to 16mm2 |
| Ambient temperature (daily average) | 35 ℃ or less |
| Storage temperature | -25℃ to +55℃ |
| Types of climate protection | Damp-heat type |
| Altitude (m) | ≤2000m |
| Relative humidity of air | 50% ~ 90% |
| Pollution level | 2 |
| Installation environment | B |
| Installation category | Ⅱ or Ⅲ |
| Installation mode | plug-in |
| Meet the standard | IEC 61009-1 |
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?
For FB2L-63 projects, CHAC can review private-label marking, packaging, appearance, available electrical configurations and technical-document requirements. Requests outside the published range are subject to engineering evaluation, testing, MOQ and project feasibility.
Logo & Branding
Private-label marking and nameplate options are subject to artwork review and sample approval.
Packaging
Customization
Cartons, labels and manuals can be prepared for the approved order specification and destination market.
Electrical
Customization
Select from the published 10A–50A, 1P+N and C options; non-standard requests require technical evaluation.
Product
Appearance
Appearance options can be reviewed subject to tooling, MOQ, marking requirements and technical feasibility.
Certification
Support
Datasheets, drawings and verified certificate information are supplied for the applicable approved configuration.
Engineering
Development
Project support may include drawing review, sample evaluation, testing and production planning, subject to technical approval.
Download
FB 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.
FB2L-63 Product FAQ
Why are Type AC RCDs restricted in some markets?
Some markets restrict Type AC devices for circuits where modern electronic loads can produce residual-current waveforms they are not designed to detect. Requirements vary, so check the destination rules and connected equipment.
What is a Type AC RCBO?
A Type AC RCBO is intended to respond to residual sinusoidal alternating current while also providing overcurrent protection. FB2L-63 publishes Type AC, 30mA IΔn, C curve and 1P+N.
Can Type AC RCBOs still be used?
That depends on the jurisdiction, installation date, circuit and load. Do not assume universal acceptance; confirm that Type AC is permitted and technically suitable for the expected residual-current waveform.
Are Type AC RCBOs banned everywhere?
No global statement is accurate. Rules differ by country and application. The buyer must verify local requirements before specifying FB2L-63 for the destination market.
When should a Type A RCBO be considered instead?
Type A may be required where pulsating DC residual components from electronic equipment are expected or where local rules specify it. Select an independently verified Type A product rather than treating Type AC as equivalent.
Should an existing Type AC RCD or RCBO be replaced?
Replacement should follow an assessment of local requirements, connected loads, condition and coordination. A qualified person should decide; the FB2L-63 product page should not be used as a universal replacement instruction.
Confirm the Right FB2L-63 Configuration
Send your current rating, pole arrangement, trip option, system voltage, prospective fault level, destination market and quantity. CHAC will review the request against the published product range.
