{"id":907,"date":"2021-04-28T08:07:00","date_gmt":"2021-04-28T08:07:00","guid":{"rendered":"https:\/\/www.wolunelectric.com\/?post_type=product&p=907"},"modified":"2026-05-13T15:00:37","modified_gmt":"2026-05-13T07:00:37","slug":"sn10-10kv-indoor-less-oil-circuit-breaker","status":"publish","type":"product","link":"https:\/\/www.wolunelectric.com\/th\/product\/sn10-10kv-indoor-less-oil-circuit-breaker\/","title":{"rendered":"SN10-10 10kV Indoor Less Oil Circuit Breaker"},"content":{"rendered":"

 <\/p>\n

General Introduction<\/strong><\/h2>\n
\n
\n

SN10-10 series 10kV Indoor Less Oil Circuit Breaker is a traditional type medium voltage oil circuit breaker. It takes transformer oil as the arc quenching and insulating medium, with simple mechanical structure, stable breaking performance and high cost performance.
\nThis circuit breaker is mainly designed for 10kV indoor power distribution systems, suitable for frequent closing and opening operation, as well as overload and short-circuit fault protection for transformers, power lines and electrical equipment. It is widely adopted in old substation renovation, industrial plants, mining enterprises and conventional power grid projects.<\/p>\n

 <\/p>\n

Working Conditons<\/strong><\/h2>\n

Ambient temperature: not higher than +40 \u00b0C, not less than -15\u00b0C<\/p>\n

Altitude: not exceed 1000m.<\/p>\n

Relative humidity: daily average of not more than 95%, month average of not more than 90%.<\/p>\n

Earthquake intensity: not more than ten.<\/p>\n

No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.<\/p>\n

 <\/p>\n<\/div>\n

Key Features<\/h2>\n

Mature less oil arc extinguishing technology, stable and reliable operation<\/p>\n

Simple mechanical structure, easy installation, inspection and maintenance<\/p>\n

Multiple rated current and breaking current specifications for selection<\/p>\n

Strong overload and short-circuit breaking capability<\/p>\n

Suitable for indoor fixed switch cabinet installation<\/p>\n

Low failure rate, long service life and competitive price<\/p>\n

\n

<\/h4>\n

Technical Specifications<\/h2>\n
    \n
  • Model: SN10-10<\/li>\n
  • Rated Voltage: 10kV<\/li>\n
  • Rated Frequency: 50Hz<\/li>\n
  • Rated Current: 630A, 1000A, 1250A<\/li>\n
  • Rated Short-circuit Breaking Current: 16kA, 20kA, 31.5kA<\/li>\n
  • Installation: Indoor floor \/ cabinet mounted<\/li>\n
  • Arc Quenching Medium: Transformer Less Oil<\/li>\n
  • Operating Mechanism: Electromagnetic type \/ Spring type<\/li>\n
  • Ambient Temperature: -20\u2103 ~ +40\u2103<\/li>\n
  • Applicable Altitude: \u22641000m<\/li>\n<\/ul>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    NO<\/strong><\/td>\nItem<\/strong><\/td>\nUnits<\/strong><\/td>\nparameters<\/strong><\/td>\n<\/tr>\n
    1<\/td>\nRated voltage<\/td>\nKV<\/td>\n12<\/td>\n<\/tr>\n
    2<\/td>\nRated Frequency<\/td>\nHZ<\/td>\n50<\/td>\n<\/tr>\n
    3<\/td>\nRated Current<\/td>\nA<\/td>\n630.<\/p>\n

    1250<\/p>\n

    1600<\/p>\n

    2000<\/p>\n

    3150<\/td>\n<\/tr>\n

    4<\/td>\nRated short-circuit breaking current<\/td>\nKA<\/td>\n20 25 31.5<\/td>\n<\/tr>\n
    5<\/td>\nRated short-circuit closing current (peak)<\/td>\nKA<\/td>\n50 63 80<\/td>\n<\/tr>\n
    6<\/td>\nRated short-circuit duration<\/td>\nS<\/td>\n4<\/td>\n<\/tr>\n
    7<\/td>\nRated short-circuit breaking current breaking number<\/td>\nnos<\/td>\n50s<\/td>\n<\/tr>\n
    8<\/td>\nRated operating sequence<\/td>\n<\/td>\n0-0.3s-CO-180s-CO<\/td>\n<\/tr>\n
    9<\/td>\nRated lightning impulse withstandvoltage<\/td>\nkv<\/td>\n125<\/td>\n<\/tr>\n
    10<\/td>\n1min power frequency withstand voltage<\/td>\nKV<\/td>\n65<\/td>\n<\/tr>\n
    11<\/td>\nClosing time<\/td>\nms<\/td>\n\u2264 70<\/td>\n<\/tr>\n
    12<\/td>\nopening time<\/td>\nms<\/td>\n\u2264 50<\/td>\n<\/tr>\n
    13<\/td>\nMechanical life<\/td>\nTimes<\/td>\n20000<\/td>\n<\/tr>\n
    14<\/td>\nRated Storage and operation voltage<\/td>\nV<\/td>\nAC DC 220\/110<\/td>\n<\/tr>\n
    15<\/td>\nBreaking life<\/td>\nms<\/td>\n\u2264 80<\/td>\n<\/tr>\n
    16<\/td>\nStorage life<\/td>\ns<\/td>\n\u2264 10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Adjust the parameters of mechanical properties:<\/p>\n\n\n\n\n\n\n\n\n\n\n
    No<\/td>\nItem<\/td>\nUnit<\/td>\nParameters<\/td>\n<\/tr>\n
    1<\/td>\nContact distance<\/td>\nmm<\/td>\n14\u00b11<\/td>\n<\/tr>\n
    2<\/td>\nContact Over-travel<\/td>\nmm<\/td>\n3.5\u00b11<\/td>\n<\/tr>\n
    3<\/td>\nClosing speed<\/td>\nm\/s<\/td>\n1.0\u00b10.2<\/td>\n<\/tr>\n
    4<\/td>\nOpening speed<\/td>\nm\/s<\/td>\n1.3\u00b10.2<\/td>\n<\/tr>\n
    5<\/td>\nContact closing spring time<\/td>\nms<\/td>\n\u22642<\/td>\n<\/tr>\n
    6<\/td>\nRated contact pressure<\/td>\nN<\/td>\n20KA(2400\u00b1200) 25KA (2400\u00b1200) 31.5KA(3100\u00b1200)<\/td>\n<\/tr>\n
    7<\/td>\nThree phase closing opening asynchrony<\/td>\nms<\/td>\n\u22642<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

     <\/p>\n

    Application<\/h2>\n
    \n

    It is commonly used in 10kV indoor substations, distribution rooms, industrial and mining enterprises, power plants and residential power supply systems.<\/p>\n

    <\/div>\n

    Used for switching, overload protection and short-circuit protection of lines, transformers and other high-voltage equipment.<\/p>\n<\/div>\n

    <\/div>\n

    Our Services<\/h2>\n
    We provide original SN10-10 less oil circuit breakers with complete specifications. Factory direct supply, fast delivery and professional technical support. Custom solution and OEM service are available for global customers.<\/div>\n
    SN10-10 10kV Indoor Less Oil Circuit Breaker for MV Distribution System<\/div>\n
    <\/div>\n

    Outline Dimension<\/h2>\n

    \"sn10 \"sn10<\/p>\n

     <\/p>","protected":false},"excerpt":{"rendered":"

    SN10-10 10kV Indoor Less Oil Circuit Breaker is a classic medium voltage oil circuit breaker, adopting transformer oil for arc extinction and insulation. With mature structure, stable performance and economic cost, it is widely used in 10kV indoor switchgear and distribution substations.<\/p>","protected":false},"featured_media":908,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"SN10-10 10kV Indoor Less Oil Circuit Breaker for MV Distribution System","_seopress_titles_desc":"SN10-10 indoor less oil circuit breaker is 10kV medium voltage oil circuit breaker, available in 630A 1000A 1250A, reliable for indoor substation cabinet installation and power distribution protection.","_seopress_robots_index":""},"product_brand":[],"product_cat":[44],"product_tag":[],"class_list":{"0":"post-907","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-vacuum-circuit-breaker","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product\/907","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/media\/908"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/media?parent=907"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_brand?post=907"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_cat?post=907"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/th\/wp-json\/wp\/v2\/product_tag?post=907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}