{"id":1060,"date":"2026-06-08T08:49:14","date_gmt":"2026-06-08T08:49:14","guid":{"rendered":"https:\/\/qfusn0sgc2.wpdns.site\/?post_type=product&#038;p=1060"},"modified":"2026-07-20T09:42:22","modified_gmt":"2026-07-20T09:42:22","slug":"cqm2e-250-electronic-residual-current-operated-circuit-breaker","status":"publish","type":"product","link":"https:\/\/chac-electric.com\/ar\/product\/cqm2e-250-electronic-residual-current-operated-circuit-breaker\/","title":{"rendered":"CQM2E-250 Electronic Residual Current Operated Circuit Breaker"},"content":{"rendered":"<h2>Main functions and features<\/h2>\n<p>1.With local protection function: using RS485 for local maintenance;<\/p>\n<p>2.It has the function of measuring the forward and reverse active electric energy, and the function of measuring the split-phase active electric energy;<\/p>\n<p>3.Freezing function: instantaneous freezing, minute freezing, hourly freezing, daily freezing and monthly freezing;<\/p>\n<p>4.It has the function of harmonic measurement: it has the function of measuring the harmonic amplitude and its proportion; it has the function of counting the odd and even harmonic content rates;<\/p>\n<p>5.It has the function of storing data items such as voltage, current, events, etc.;<\/p>\n<p>6.It has the function of recording the events of phase loss, voltage (current) reverse phase sequence, power flow reversal and demand exceeding limit;<\/p>\n<p>7.The switch supports power-off, opening and closing, overcurrent, overvoltage, current imbalance, undervoltage, voltage imbalance, phase failure, and clearing event recording functions. A single event record includes: the time of event occurrence, cause of occurrence, phase difference, and electrical parameters at the time of occurrence;<\/p>\n<p>8.Time synchronization function: supports local and broadcast time synchronization, receives and executes the time synchronization command issued by the master station system;<\/p>\n<p>9.With three remote functions: supporting remote signaling, remote measurement and remote control functions;<\/p>\n<p>10.With monitoring function: detect the opening and closing status information;<\/p>\n<p>11.It has the function of sending and identifying topology signals;<\/p>\n<p>12.Power outage reporting function: supports carrier communication function for more than 30 seconds after power outage;<\/p>\n<p>13.With remote upgrade function: support remote compression\/non-compression upgrade, local non-compression upgrade function;<\/p>\n<p>14.With extended functions: assisting the intelligent fusion terminal in the substation area to realize automatic generation of substation area topology and statistics of line loss in substation layers or sections;<\/p>\n<p>15.Support broadband carrier communication;<\/p>\n<h2>Usage Environment<\/h2>\n<p>1.The installation site should be free of conductive dust, corrosive gas, flammable and explosive gas, rain or snow;<\/p>\n<p>2.Altitude: not higher than 2000m;<\/p>\n<p>3.Ambient temperature: -5\u00b0C-+40\u00b0C, daily average maximum temperature: \u2264+35\u00b0C;<\/p>\n<p>4.Relative humidity: \u226450% (when the ambient temperature is +40\u00b0C);<\/p>\n<p>5.The magnetic field strength of the external magnetic field at the installation site in any direction shall not exceed 5 times the earth&#8217;s magnetic field;<\/p>\n<p>6.The installation location should have good ventilation and heat dissipation conditions;<\/p>\n<p>7.When HPLC (broadband carrier) communication is required, make sure all communication equipment works under one transformer.<\/p>","protected":false},"excerpt":{"rendered":"<p>The CQM2E-250 series electronic residual current circuit breaker is a highly intelligent and multifunctional device designed by CHAC Electric. It provides comprehensive protection and monitoring capabilities for electrical systems with a rated voltage of up to 230V\/400V and a rated current of 250A.<\/p>","protected":false},"featured_media":1077,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[25,40],"product_tag":[],"class_list":["post-1060","product","type-product","status-publish","has-post-thumbnail","product_cat-terminal-electrical-appliances","product_cat-rcbo","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/product\/1060","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/comments?post=1060"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/media\/1077"}],"wp:attachment":[{"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/media?parent=1060"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/product_brand?post=1060"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/product_cat?post=1060"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/chac-electric.com\/ar\/wp-json\/wp\/v2\/product_tag?post=1060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}