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（PG，PG-M) An adjustable Residual Current Circuit Breaker (RCCB)
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    （PG，PG-M) An adjustable Residual Current Circuit Breaker (RCCB)

    2026-05-18
    When it comes to electrical safety, choosing the right residual current circuit breaker (RCCB) is non-negotiable. For homeowners, electricians, and business owners seeking flexibility, reliability, and precise protection, our adjustable RCCB (PG and PG-M series) stands out as a top-tier solution. Designed and manufactured by W9 GROUP, this adjustable residual current circuit breaker addresses the core pain points of standard fixed-setting RCCBs, offering customizable performance that adapts to diverse electrical systems.

    What Makes Our Adjustable RCCB Unique?

    Our adjustable RCCB (PG-M series) is engineered with user-centric design, setting it apart from conventional fixed RCCBs. The most prominent feature is its adjustable rated current, ranging from 5A to 60A, catering to both low-power household circuits and higher-load commercial or industrial setups. Unlike fixed RCCBs that only work for one specific current rating, our model lets users tweak the current setting to match exact load requirements, eliminating the need for multiple breakers and reducing costs.
    In terms of configuration, the PG-M series offers two common types: 1P+N (2 极) and 3P+N (3ph.+N). The 1P+N variant is ideal for single-phase 230V systems, widely used in homes, small shops, and offices. The 3P+N version suits three-phase 400V industrial or commercial systems, such as factories, warehouses, and large retail spaces. For leakage protection, it provides optional residual current (RCD) settings of 300mA or 500mA, and can also be configured without ground leakage protection if needed. All models comply with the IEC60947-2 international standard, ensuring global quality and safety certification.
    Key specifications reinforce its reliability:
    • Rated current: 5A–60A (adjustable)
    • Voltage: 230V (single-phase), 400V (three-phase)
    • Leakage current: None / 300mA / 500mA
    • Breaking capacity: 4.5kA
    • Durable build for long-term stable operation

    Why Choose an Adjustable RCCB Over a Fixed RCCB?

    Many buyers wonder: “Is an adjustable RCCB worth the investment?” The answer is a resounding yes, and here’s why:
    1. Flexibility for Changing Loads: Electrical loads often change—adding new appliances, expanding commercial equipment, or upgrading industrial machinery. A fixed RCCB becomes obsolete when loads shift, but our adjustable RCCB adapts instantly with a simple setting change.
    2. Cost-Effectiveness: Instead of purchasing multiple fixed RCCBs for different circuits, one adjustable unit covers multiple current ratings. This cuts procurement costs and simplifies inventory management.
    3. Space-Saving: With compact overall dimensions (20mm×70mm×53mm for core models), the PG-M series fits easily into standard electrical panels. Its adjustable design reduces the number of breakers needed, saving valuable panel space.

    Common Use Scenarios for W9 GROUP’s Adjustable RCCB

    Our adjustable RCCB serves a wide range of applications, solving safety and compatibility issues across sectors:
    • Residential: Protects household circuits (lighting, sockets, kitchen appliances) with 5A–30A adjustable ratings, preventing electric shocks and electrical fires from leakage.
    • Commercial: Ideal for small businesses, cafes, and retail stores. The 30A–45A range suits air conditioners, refrigeration equipment, and office machinery.
    • Industrial: The 3P+N 60A model handles three-phase industrial equipment, motors, and production lines, with 500mA leakage protection for heavy-load safety.
    • Renovation & Retrofit: Perfect for old building upgrades. Its adjustable current easily matches outdated wiring loads, avoiding full electrical system overhauls.
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    Q&A: Solve Your Key Concerns

    Q1: Is the adjustable RCCB easy to install and adjust?

    A1: Absolutely. The PG-M series follows standard installation dimensions, compatible with global electrical panels. The adjustable current setting is a simple manual tweak—no professional tools needed. Electricians or experienced users can complete installation and adjustment in minutes.

    Q2: Does the adjustable RCCB meet international safety standards?

    A2: Yes. Our PG-M adjustable RCCB strictly complies with the IEC60947-2 standard, ensuring consistent safety performance worldwide. It undergoes rigorous testing for leakage protection, breaking capacity, and durability.

    Q3: Can I customize the leakage protection setting?

    A3: Certainly. The PG-M series offers three options: no ground leakage protection, 300mA, or 500mA. You can select the ideal setting based on your circuit’s safety requirements—300mA for high-sensitivity residential use, 500mA for heavy-load industrial use.

    Q4: What is the breaking capacity of your adjustable RCCB?

    A4: All PG-M adjustable RCCB models feature a 4.5kA breaking capacity, which effectively handles short-circuit currents, protecting circuits and connected devices from damage.

    Final Thoughts

    For anyone prioritizing electrical safety, flexibility, and cost-efficiency, W9 GROUP’s adjustable RCCB (PG/PG-M series) is the ultimate choice. Its adjustable current ratings, optional leakage protection, IEC compliance, and compact design address nearly all pain points of fixed RCCBs. Whether you’re a homeowner upgrading safety, an electrician sourcing reliable components, or a business owner protecting commercial/industrial circuits, our adjustable residual current circuit breaker delivers consistent, tailored performance.
    Trust leading technology from W9 GROUP—our adjustable RCCB doesn’t just protect circuits; it adapts to your unique electrical needs, making it a smart investment for long-term safety and reliability.