{"id":2640,"date":"2026-07-17T01:51:24","date_gmt":"2026-07-17T01:51:24","guid":{"rendered":"https:\/\/chac-electric.com\/?p=2640"},"modified":"2026-07-18T01:56:35","modified_gmt":"2026-07-18T01:56:35","slug":"dual-protection-single-unit-inside-the-cqm6l-series-circuit-breaker","status":"publish","type":"post","link":"https:\/\/chac-electric.com\/pt\/blog\/dual-protection-single-unit-inside-the-cqm6l-series-circuit-breaker\/","title":{"rendered":"Dual Protection, Single Unit: Inside the CQM6L Series Circuit Breaker"},"content":{"rendered":"
When designing industrial and commercial power systems, space is often at a premium, but safety can never be compromised. The CHAC CQM6L Series addresses this by combining two essential protections in a single device: overcurrent protection for overload and short-circuit scenarios, alongside residual current protection that detects dangerous earth leakage .<\/p>\n
\n
\n
\n

This “Dual Protection, Single Unit” approach integrates the functions of a Molded Case Circuit Breaker (MCCB)<\/a> and an Earth Leakage Circuit Breaker (ELCB)<\/strong> into one robust chassis .<\/p>\n

\"Dual<\/p>\n<\/div>\n

<\/p>\n

<\/div>\n

<\/p>\n

How the CQM6L Series Works<\/h2>\n

The CQM6L Series<\/strong> relies on precise internal mechanisms to monitor and protect your circuits:<\/p>\n

\n
\n
\n

Overcurrent Protection: Internally, sophisticated thermal and magnetic systems continuously monitor the circuit . They are designed to rapidly disconnect power when excessive heating (overload) or high instantaneous current (short-circuit) occurs .<\/p>\n<\/div>\n<\/div>\n

\n
\n

Earth Leakage Protection: A toroidal transformer continuously tracks the currents across the phase and neutral lines . When insulation fails and current leaks, the resulting imbalance is immediately detected, triggering the trip mechanism .<\/p>\n<\/div>\n<\/div>\n<\/div>\n

As shown in the diagram of the CQM6L-800S model, the faceplate provides clear access to essential controls, including the Mechanical Trip Test, Earth Leakage Current Setting, and Leakage Trip Time adjustments.<\/p>\n

<\/p>\n

Technical Specifications for Demanding Applications<\/h2>\n

Engineered for power distribution and motor protection in demanding industrial and commercial facilities, the CQM6L series offers comprehensive specifications :<\/p>\n

\n
\n

Current Range:
\nBroad coverage from 10A to 1250A<\/p>\n<\/div>\n

\n

Breaking Capacity:
\nHigh performance with up to 75kA breaking capacity<\/p>\n<\/div>\n

\n

Configuration:
\nAvailable in a 4-pole configuration (R, S, T, N).<\/p>\n<\/div>\n

\n

Leakage Sensitivity:
\nSelectable sensitivity ranging from 30mA to 1000mA<\/p>\n<\/div>\n

\n

Time Delay:
\nFlexible options including Y1\u2013Y12 fixed (0.1s\u20131.2s) and Y13\u2013Y14 adjustable (up to 3s) settings<\/p>\n<\/div>\n<\/div>\n

<\/p>\n

\n

If you are interested in integrating the CQM6L Series into your next project, please contact our engineering team for full technical documentation and specifications.<\/p>\n<\/div>\n

\n

Would you like me to draft a LinkedIn post based on this article to help drive traffic to your new blog page?<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

When designing industrial and commercial power systems, space is often at a premium, but safety can never be compromised. The CHAC CQM6L Series addresses this by combining two essential protections in a single device: overcurrent protection for overload and short-circuit scenarios, alongside residual current protection that detects dangerous earth leakage . This “Dual Protection, Single […]<\/p>\n","protected":false},"author":1,"featured_media":2641,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2640","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/posts\/2640","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/comments?post=2640"}],"version-history":[{"count":2,"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/posts\/2640\/revisions"}],"predecessor-version":[{"id":2652,"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/posts\/2640\/revisions\/2652"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/media\/2641"}],"wp:attachment":[{"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/media?parent=2640"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/categories?post=2640"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/chac-electric.com\/pt\/wp-json\/wp\/v2\/tags?post=2640"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}