{"id":3767,"date":"2026-08-24T00:00:00","date_gmt":"2026-08-24T00:00:00","guid":{"rendered":"https:\/\/chac-electric.com\/?p=3767"},"modified":"2026-08-24T05:40:46","modified_gmt":"2026-08-24T05:40:46","slug":"dc-mcb-single-pole-and-its-function","status":"publish","type":"post","link":"https:\/\/chac-electric.com\/ru\/blog\/dc-mcb-single-pole-and-its-function\/","title":{"rendered":"DC MCB Single Pole And Its Function"},"content":{"rendered":"

When a solar installer in Perth substituted an AC miniature breaker for a DC string, the lever looked normal but the arc did not extinguish when the fault occurred. The replacement had the right current number and the wrong voltage and polarity arrangement. The incident showed why a DC MCB is selected by arc behavior, system voltage, polarity, and interruption rating\u2014not by label shape alone. The practical answer is to document single pole DC MCB<\/strong> \u043a\u0430\u043a \u0447\u0430\u0441\u0442\u044c \u043f\u043e\u043b\u043d\u043e\u0439 \u044d\u043b\u0435\u043a\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b.<\/p>\n

\u0420\u0435\u0437\u044e\u043c\u0435:<\/strong> A single-pole DC MCB protects a conductor in a direct-current circuit, but the device must be rated for the system voltage, polarity, short-circuit current, and intended use. Buyers should confirm DC breaking capacity, number of poles, polarised terminals, trip curve, ambient derating, and the manufacturer wiring direction. AC and DC ratings are not interchangeable.<\/p>\n

\"Single-pole
Application view: DC MCB in a low-voltage installation.<\/figcaption><\/figure>\n

A DC MCB is used in battery, photovoltaic, telecom, control, and other direct-current circuits. Since DC has no natural current zero, arc interruption is more demanding than in many AC applications. The selection brief must include maximum voltage, prospective fault current, cable size, source type, and whether both conductors need isolation. When the brief is clear, circuit breaker for DC voltage<\/strong><\/a> \u043c\u043e\u0436\u043d\u043e \u0441\u0440\u0430\u0432\u043d\u0438\u0442\u044c \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0444\u0430\u043a\u0442\u043e\u0432, \u0430 \u043d\u0435 \u043e\u0431\u0449\u0435\u0433\u043e \u043c\u0430\u0440\u043a\u0435\u0442\u0438\u043d\u0433\u043e\u0432\u043e\u0433\u043e \u043e\u0431\u0435\u0449\u0430\u043d\u0438\u044f.<\/p>\n

What Is the Function of a Single-Pole DC MCB?<\/h2>\n

The breaker carries normal current and opens when overload or short-circuit current exceeds its time-current characteristic. A single-pole unit interrupts one conductor; whether that conductor is positive or negative, and whether the other pole also needs isolation, depends on the system design. In a floating or battery system, a two-pole isolating arrangement may be required even when the branch protection is single pole.<\/p>\n

Why Is DC Voltage Rating Critical?<\/h2>\n

The voltage rating defines the distance and magnetic design used to extinguish the arc. A breaker marked for 250 VDC is not automatically suitable for a 500 V string. Check the rating at the actual number of poles in series, the current direction if the device is polarised, and the maximum prospective fault current. Use the manufacturer table rather than estimating from an AC label.<\/p>\n

How Do AC and DC Circuit Breakers Differ?<\/h2>\n

AC breakers benefit from alternating current crossing zero each half cycle. DC devices use magnetic blowout, longer arc paths, or pole series arrangements to interrupt current. This is why an AC MCB may fail to clear a DC fault safely. A DC MCB may be suitable for some AC applications only if the manufacturer explicitly provides that rating.<\/p>\n

How Should the Breaker Be Installed?<\/h2>\n

Follow polarity arrows, line\/load markings, torque values, clearance, and the specified cable stripping length. Keep source conductors short and route them to limit loop energy. After installation, test insulation and polarity, verify the open gap, and record the breaker model, voltage, current, and fault-level calculation in the as-built file.<\/p>\n

What Should Be Coordinated Around the MCB?<\/h2>\n

Coordinate the breaker with fuses, battery protection, PV modules, converters, contactors, cable ampacity, and downstream equipment. Selectivity may be difficult when several protective devices share a high-energy source. The goal is to clear the smallest faulty section while keeping the rest of the DC system available.<\/p>\n

How Should a Buyer Choose a DC MCB Supplier?<\/h2>\n

Ask for IEC test evidence, DC voltage tables, polarity diagrams, terminal data, mechanical endurance, and a clear replacement family. CHAC offers DC MCB and terminal protection options with engineering support for low-voltage distribution. A complete purchase record should state voltage, poles, current, curve, breaking capacity, and installation orientation.<\/p>\n

\n
\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u044f \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430<\/h5>\n

\u041c\u0438\u043d\u0438\u0430\u0442\u044e\u0440\u043d\u044b\u0439 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0432\u044b\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u044c CQB2H-63 \u2013 CHAC Electric<\/a><\/p>\n

\"\u0410\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0439<\/p><\/blockquote>\n

\u041a\u0430\u043a\u0438\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0434\u043e\u043b\u0436\u043d\u044b \u0431\u044b\u0442\u044c \u0443\u043a\u0430\u0437\u0430\u043d\u044b \u0432 \u0437\u0430\u043f\u0440\u043e\u0441\u0435 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u0439 (RFQ)?<\/h2>\n\n\n\n\n\n\n\n\n
\u041e\u0431\u043b\u0430\u0441\u0442\u044c \u043f\u0440\u0438\u043d\u044f\u0442\u0438\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u0439<\/th>\n\u0427\u0442\u043e \u0443\u043a\u0430\u0437\u0430\u0442\u044c<\/th>\n\u041f\u043e\u0447\u0435\u043c\u0443 \u044d\u0442\u043e \u0432\u0430\u0436\u043d\u043e<\/th>\n<\/tr>\n<\/thead>\n
\u041d\u0430\u043f\u0440\u044f\u0436\u0435\u043d\u0438\u0435<\/strong><\/td>\nMaximum DC voltage and poles in series<\/td>\nControls arc interruption<\/td>\n<\/tr>\n
Fault level<\/strong><\/td>\nProspective short-circuit current<\/td>\nConfirms breaking capacity<\/td>\n<\/tr>\n
\u041f\u043e\u043b\u044f\u0440\u043d\u043e\u0441\u0442\u044c<\/strong><\/td>\nPositive\/negative and line\/load direction<\/td>\nPrevents incorrect magnetic operation<\/td>\n<\/tr>\n
Cable<\/strong><\/td>\nAmpacity, temperature, route, terminal size<\/td>\nCoordinates protection and heating<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u041c\u044b \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u043c \u0438\u0437\u043c\u0435\u0440\u044f\u0442\u044c \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0439 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u043f\u043e \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0443. \u0421\u0444\u043e\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0440\u0443\u0439\u0442\u0435 \u043a\u043b\u0435\u043c\u043c\u044b, \u0437\u0430\u043f\u0438\u0448\u0438\u0442\u0435 \u043a\u0440\u0443\u0442\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 \u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0439, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0441\u043e\u0445\u0440\u0430\u043d\u0438\u0442\u0435 \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u043d\u044b\u0439 \u0447\u0435\u0440\u0442\u0435\u0436 \u0432\u043c\u0435\u0441\u0442\u0435 \u0441 \u043f\u0430\u0440\u0442\u0438\u0435\u0439 \u043f\u043e\u0441\u0442\u0430\u0432\u043a\u0438. \u042d\u0442\u0430 \u0437\u0430\u043f\u0438\u0441\u044c \u0434\u0435\u043b\u0430\u0435\u0442 DC circuit breaker<\/strong> \u043f\u043e\u0434\u0434\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0435 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e\u0441\u0442\u0438 \u0437\u0430\u043c\u0435\u043d\u044b \u0438\u043b\u0438 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f.<\/p>\n

\u041a\u0430\u043a \u043f\u043e\u043a\u0443\u043f\u0430\u0442\u0435\u043b\u044f\u043c \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0432\u044b\u0431\u0438\u0440\u0430\u0442\u044c \u043f\u0440\u043e\u0434\u0443\u043a\u0442 \u0438 \u043f\u043e\u0441\u0442\u0430\u0432\u0449\u0438\u043a\u0430?<\/h2>\n
    \n
  1. \u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435 \u043d\u0430\u043f\u0440\u044f\u0436\u0435\u043d\u0438\u0435, \u0442\u043e\u043a, \u0440\u0435\u0436\u0438\u043c \u0440\u0430\u0431\u043e\u0442\u044b, \u0443\u0441\u043b\u043e\u0432\u0438\u044f \u043e\u043a\u0440\u0443\u0436\u0430\u044e\u0449\u0435\u0439 \u0441\u0440\u0435\u0434\u044b, \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u0442\u043e\u043a\u0430 \u043a\u043e\u0440\u043e\u0442\u043a\u043e\u0433\u043e \u0437\u0430\u043c\u044b\u043a\u0430\u043d\u0438\u044f \u0438 \u0440\u0438\u0441\u043a \u0434\u043b\u044f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0438\u043b\u0438 \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u0434 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u043c \u043a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u044f.<\/li>\n
  2. \u0417\u0430\u043f\u0440\u043e\u0441\u0438\u0442\u0435 \u0442\u043e\u0447\u043d\u043e\u0435 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435, \u044d\u043b\u0435\u043a\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u0443\u044e \u0441\u0445\u0435\u043c\u0443, \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442, \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0439, \u043a\u043e\u043c\u043f\u043b\u0435\u043a\u0442\u0443\u044e\u0449\u0438\u0435 \u0438 \u043f\u043e\u043b\u0438\u0442\u0438\u043a\u0443 \u0437\u0430\u043c\u0435\u043d\u044b.<\/li>\n
  3. \u0423\u0442\u0432\u0435\u0440\u0434\u0438\u0442\u0435 \u043e\u0431\u0440\u0430\u0437\u0435\u0446 \u0438\u043b\u0438 \u043f\u0435\u0440\u0432\u0443\u044e \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c\u043d\u0443\u044e \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443 \u0438\u0437\u0434\u0435\u043b\u0438\u044f \u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u044c\u0442\u0435 \u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043c\u043e\u043d\u0442\u0430\u0436\u0430, \u0430 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0443\u043f\u0430\u043a\u043e\u0432\u043a\u0438.<\/li>\n
  4. \u0417\u0430\u043f\u0438\u0448\u0438\u0442\u0435 \u0441\u0435\u0440\u0438\u0439\u043d\u044b\u0439 \u043d\u043e\u043c\u0435\u0440, \u043d\u043e\u043c\u0435\u0440 \u043f\u0430\u0440\u0442\u0438\u0438, \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438, \u043a\u0440\u0443\u0442\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 \u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u043f\u0443\u0441\u043a\u043e\u043d\u0430\u043b\u0430\u0434\u043a\u0438 \u0432 \u0444\u0430\u0439\u043b \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u043d\u0438\u044f \u0438\u043b\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u043d\u0443\u044e \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u044e.<\/li>\n
  5. \u0421\u0440\u0430\u0432\u043d\u0438\u0442\u0435 \u043e\u0431\u0449\u0443\u044e \u0441\u0442\u043e\u0438\u043c\u043e\u0441\u0442\u044c \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438, \u0432\u0440\u0435\u043c\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0437\u0430\u043a\u0430\u0437\u0430, \u0437\u0430\u043f\u0430\u0441\u043d\u044b\u0435 \u0447\u0430\u0441\u0442\u0438, \u0440\u0435\u0430\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u0435\u0440\u0432\u0438\u0441\u043d\u043e\u0439 \u0441\u043b\u0443\u0436\u0431\u044b \u0438 \u0443\u0432\u0435\u0434\u043e\u043c\u043b\u0435\u043d\u0438\u0435 \u043e\u0431 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f\u0445 \u0434\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430.<\/li>\n<\/ol>\n

    CHAC \u2014 \u044d\u0442\u043e \u043a\u0438\u0442\u0430\u0439\u0441\u043a\u0438\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c \u043d\u0438\u0437\u043a\u043e\u0432\u043e\u043b\u044c\u0442\u043d\u043e\u0433\u043e \u044d\u043b\u0435\u043a\u0442\u0440\u043e\u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u044f (OEM\/ODM) \u0438 \u0433\u043b\u043e\u0431\u0430\u043b\u044c\u043d\u044b\u0439 \u043f\u043e\u0441\u0442\u0430\u0432\u0449\u0438\u043a \u0440\u0435\u0448\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u044d\u043b\u0435\u043a\u0442\u0440\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c. \u041b\u0438\u043d\u0435\u0439\u043a\u0438 \u0435\u0433\u043e \u043f\u0440\u043e\u0434\u0443\u043a\u0446\u0438\u0438 \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442 \u043c\u043e\u0434\u0443\u043b\u044c\u043d\u043e\u0435 \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0435, \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0432\u044b\u043a\u043b\u044e\u0447\u0430\u0442\u0435\u043b\u0438 (MCB), \u0423\u0417\u041e \u0438 \u0434\u0438\u0444\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u044b (RCCB\/RCBO), \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u0438\u043c\u043f\u0443\u043b\u044c\u0441\u043d\u044b\u0445 \u043f\u0435\u0440\u0435\u043d\u0430\u043f\u0440\u044f\u0436\u0435\u043d\u0438\u0439 (SPD), \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0435 \u043e\u0431\u043e\u0440\u0443\u0434\u043e\u0432\u0430\u043d\u0438\u0435, \u043a\u043e\u043d\u0442\u0430\u043a\u0442\u043e\u0440\u044b, \u0442\u0435\u043f\u043b\u043e\u0432\u044b\u0435 \u0440\u0435\u043b\u0435 \u043f\u0435\u0440\u0435\u0433\u0440\u0443\u0437\u043a\u0438 \u0438 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0437\u0430\u0449\u0438\u0442\u044b \u0434\u0432\u0438\u0433\u0430\u0442\u0435\u043b\u0435\u0439. \u041f\u043e\u043a\u0443\u043f\u0430\u0442\u0435\u043b\u0438 \u043c\u043e\u0433\u0443\u0442 \u043e\u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0430\u0441\u0441\u043e\u0440\u0442\u0438\u043c\u0435\u043d\u0442 \u043f\u0440\u043e\u0434\u0443\u043a\u0446\u0438\u0438 CHAC<\/a> \u0438 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043f\u043e \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u043c\u0443 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044e<\/a> \u043f\u0435\u0440\u0435\u0434 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u043c \u0432\u044b\u0431\u043e\u0440\u0430 \u0434\u043b\u044f \u043a\u043e\u043d\u043a\u0440\u0435\u0442\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0435\u043a\u0442\u0430.<\/p>\n

    \"CHAC
    Product reference: CHAC DC MCB for coordinated low-voltage protection or control.<\/figcaption><\/figure>\n

    FAQ: Dc Mcb<\/h2>\n

    What is the purpose of a DC MCB?<\/h3>\n

    It protects a DC conductor from overload and short-circuit current and provides a controlled means of isolation when correctly rated.<\/p>\n

    What is the purpose of a DC circuit breaker?<\/h3>\n

    It interrupts DC faults safely and isolates a circuit; the exact device must match system voltage, current, fault level, and polarity.<\/p>\n

    What is the difference between a two-pole MCB and a single-pole MCB?<\/h3>\n

    A single-pole unit opens one conductor, while a two-pole unit can open two. The required arrangement depends on grounding, isolation, and the applicable installation rules.<\/p>\n

    When should I use one pole versus two poles?<\/h3>\n

    Use the circuit design and local code. Battery and floating systems often need simultaneous isolation of both conductors, while some grounded branches protect one ungrounded conductor.<\/p>\n

    Can a DC MCB be used on AC?<\/h3>\n

    Only when the manufacturer gives an AC rating for the exact model and connection. Never infer interchangeability from the housing.<\/p>\n

    \u0421\u0441\u044b\u043b\u043a\u0438 \u0438 \u043e\u043a\u043e\u043d\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435<\/h2>\n

    \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u044d\u0442\u0438 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438 \u043f\u0440\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0435 \u043f\u0440\u043e\u0435\u043a\u0442\u0430, \u043f\u043b\u0430\u043d\u0430 \u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0439 \u0438\u043b\u0438 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0437\u0430\u043a\u0443\u043f\u043a\u0438:<\/p>\n

      \n
    1. IEC 60947-2 circuit-breakers<\/a><\/li>\n
    2. IEC 60898-2 circuit-breakers for DC<\/a><\/li>\n
    3. IEC 60364-7-712 photovoltaic power supply systems<\/a><\/li>\n<\/ol>\n

      \u0420\u0430\u0437\u043d\u0438\u0446\u0430 \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0435 \u043d\u0430 \u0440\u0435\u0439\u043a\u0435 \u2014 \u043e\u043d\u0430 \u043a\u0440\u043e\u0435\u0442\u0441\u044f \u0432 \u043d\u043e\u043c\u0438\u043d\u0430\u043b\u044c\u043d\u044b\u0445 \u0445\u0430\u0440\u0430\u043a\u0442\u0435\u0440\u0438\u0441\u0442\u0438\u043a\u0430\u0445, \u043f\u0440\u043e\u0432\u043e\u0434\u043a\u0435, \u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u044f\u0445 \u0438 \u043f\u043e\u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0445 \u0440\u0435\u0448\u0435\u043d\u0438\u044f\u0445. \u041a\u043e\u0433\u0434\u0430 \u043f\u043e\u043a\u0443\u043f\u0430\u0442\u0435\u043b\u044c \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0441\u044f DC MCB breaker<\/strong> \u0412 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0438\u0437\u043c\u0435\u0440\u0438\u043c\u043e\u0433\u043e \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u044f: \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0443 \u043f\u0440\u043e\u0449\u0435 \u0432\u0432\u043e\u0434\u0438\u0442\u044c \u0432 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044e, \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u0442\u044c \u0438 \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u043e\u0432\u0430\u0442\u044c. CHAC \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u043c\u043e\u0447\u044c \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u0442\u044c \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u044f \u043a \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044e, \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u044e \u043d\u043e\u0440\u043c\u0430\u0442\u0438\u0432\u0430\u043c \u0438 \u043f\u043e\u0441\u0442\u0430\u0432\u043a\u0435 \u0432 \u0442\u0438\u0440\u0430\u0436\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u043d\u0438\u0437\u043a\u043e\u0432\u043e\u043b\u044c\u0442\u043d\u043e\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435.<\/p>","protected":false},"excerpt":{"rendered":"

      A single-pole DC MCB protects a conductor in a direct-current circuit, but the device must be rated for the system voltage, polarity, short-circuit cu<\/p>","protected":false},"author":1,"featured_media":3808,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3767","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"acf":[],"_links":{"self":[{"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/posts\/3767","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/comments?post=3767"}],"version-history":[{"count":6,"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/posts\/3767\/revisions"}],"predecessor-version":[{"id":3849,"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/posts\/3767\/revisions\/3849"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/media\/3808"}],"wp:attachment":[{"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/media?parent=3767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/categories?post=3767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chac-electric.com\/ru\/wp-json\/wp\/v2\/tags?post=3767"}],"curies":[{"name":"\u0432\u043f","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}