The ZN85-40.5 is a handcart-type indoor high-voltage vacuum circuit breaker with a rated voltage of 40.5kV (compatible with 33kV\/35kV applications).<\/p>\n
It adopts advanced vacuum arc-extinguishing technology and solid-embedded pole structure, with strong breaking capacity, high insulation level and long mechanical life.<\/p>\n
The breaker is mainly used for control and protection of power equipment in power plants, substations, industrial and mining enterprises, and is especially suitable for occasions requiring frequent closing and opening operations.<\/p>\n
Structural Features<\/h2>\n
1. Handcart-Type Design: Integrates breaker body and mobile chassis, equipped with lead screw nut propulsion device and overrunning clutch, enabling smooth movement and accurate positioning in KYN61-40.5 switchgear.
\n2. Solid-Embedded Pole: Each pole is sealed in epoxy resin insulating cylinder, forming composite insulation structure. It reduces overall size, improves electric field distribution and enhances protection against dust and moisture.
\n3. Reliable Spring Mechanism: Adopts dedicated spring energy storage mechanism with matched output curve, ensuring fast closing\/opening, stable performance and maintenance-free operation up to 30,000 times.
\n4. Complete Interlock Protection: Equipped with mechanical interlock device to meet “five-prevention” requirements, preventing misoperation and ensuring personal and equipment safety.<\/p>\n
Operating Environment<\/h2>\n\n- Ambient Temperature: -25\u2103 to +40\u2103<\/li>\n
- Altitude: \u22641000m (high altitude version optional)<\/li>\n
- Relative Humidity: Daily average \u226495%, monthly average \u226490%<\/li>\n
- Environmental Requirements: No explosive, corrosive gas or severe vibration; suitable for indoor clean environment<\/li>\n<\/ul>\n
Product Advantages<\/h2>\n
Excellent Insulation Performance: Solid-embedded pole and composite insulation structure provide high withstand voltage level, suitable for harsh environments such as high humidity and pollution.
\nStrong Breaking Capacity: Adopts high-performance vacuum interrupter, with rated short-circuit breaking current up to 31.5kA, ensuring reliable interruption of fault current.
\nLong Service Life & Low Maintenance: Mechanical life up to 30,000 times, wearing parts are few, and the mechanism is maintenance-free, reducing operation and maintenance costs.
\nWide Compatibility: Mainly matched with KYN61-40.5 switchgear, also compatible with JYN1-40.5, XGN17-40.5 and other 40.5kV indoor switchgears.<\/p>\n
<\/p>\n
Technical Specification<\/strong><\/h2>\n\n\n\nItem<\/td>\n Unit<\/td>\n Parameter<\/td>\n<\/tr>\n \nRated voltage<\/td>\n KV<\/td>\n 40.5<\/td>\n<\/tr>\n \nRated frequency<\/td>\n HZ<\/td>\n 50<\/td>\n<\/tr>\n \nRated current<\/td>\n A<\/td>\n 1250 1600 2000<\/td>\n<\/tr>\n \nRated short circuit breaking current<\/td>\n KA<\/td>\n 25 31.5 40<\/td>\n<\/tr>\n \nRated short current switching current(Peak value)<\/td>\n KA<\/td>\n 63 80 100<\/td>\n<\/tr>\n \nRated peak value withstand current<\/td>\n KA<\/td>\n 25 31.5 40<\/td>\n<\/tr>\n \nRated peak value withstand current<\/td>\n KA<\/td>\n 63 80 100<\/td>\n<\/tr>\n \nPower frequency wtihstand voltage<\/td>\n KV<\/td>\n 95<\/td>\n<\/tr>\n \nLightning impulse withstand voltage(Peak value)<\/td>\n KV<\/td>\n 185<\/td>\n<\/tr>\n \nRated operating sequence<\/td>\n <\/td>\n O-0.3s-CO-180s-O<\/td>\n<\/tr>\n \nBreaking current frequency under rated short circuit<\/td>\n Times<\/td>\n 20<\/td>\n<\/tr>\n \nMechanical life<\/td>\n 10000<\/td>\n<\/tr>\n \nBreaking time<\/td>\n ms<\/td>\n \u226480<\/td>\n<\/tr>\n \nSingle capacitor bank breaking current<\/td>\n A<\/td>\n 630<\/td>\n<\/tr>\n \nBack to back capacitor bank breaking current<\/td>\n 400<\/td>\n<\/tr>\n \nRated operating voltage<\/td>\n V<\/td>\n DC\/AC:100\/200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n![\"zn85](\"http:\/\/www.wolunelectric.com\/wp-content\/uploads\/2021\/04\/ZN85-ZN23-5_04.jpg\")
<\/h5>\n\u00a0<\/strong><\/h4>\n <\/p>","protected":false},"excerpt":{"rendered":"
ZN85-40.5 is a 40.5kV (33kV\/35kV) indoor AC vacuum circuit breaker (VCB) with handcart design, solid-embedded poles and spring operating mechanism. It features compact size, excellent insulation and long service life, widely used in medium-voltage power distribution.<\/p>","protected":false},"featured_media":828,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"ZN85-40.5 Indoor Vacuum Circuit Breaker | 33kV 35kV 40.5kV VCB","_seopress_titles_desc":"ZN85-40.5 indoor high voltage vacuum circuit breaker (VCB) for 33kV\/35kV\/40.5kV systems. Handcart type, solid-embedded pole, spring mechanism, suitable for KYN61-40.5 switchgear. Factory direct supply, reliable quality.","_seopress_robots_index":""},"product_brand":[],"product_cat":[44],"product_tag":[61],"class_list":{"0":"post-827","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-vacuum-circuit-breaker","7":"product_tag-indoor-vacuum-circuit-breaker","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product\/827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/media\/828"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/media?parent=827"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_brand?post=827"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_cat?post=827"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_tag?post=827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Product Advantages<\/h2>\n
Excellent Insulation Performance: Solid-embedded pole and composite insulation structure provide high withstand voltage level, suitable for harsh environments such as high humidity and pollution.
\nStrong Breaking Capacity: Adopts high-performance vacuum interrupter, with rated short-circuit breaking current up to 31.5kA, ensuring reliable interruption of fault current.
\nLong Service Life & Low Maintenance: Mechanical life up to 30,000 times, wearing parts are few, and the mechanism is maintenance-free, reducing operation and maintenance costs.
\nWide Compatibility: Mainly matched with KYN61-40.5 switchgear, also compatible with JYN1-40.5, XGN17-40.5 and other 40.5kV indoor switchgears.<\/p>\n
<\/p>\n
Technical Specification<\/strong><\/h2>\n\n\n\nItem<\/td>\n Unit<\/td>\n Parameter<\/td>\n<\/tr>\n \nRated voltage<\/td>\n KV<\/td>\n 40.5<\/td>\n<\/tr>\n \nRated frequency<\/td>\n HZ<\/td>\n 50<\/td>\n<\/tr>\n \nRated current<\/td>\n A<\/td>\n 1250 1600 2000<\/td>\n<\/tr>\n \nRated short circuit breaking current<\/td>\n KA<\/td>\n 25 31.5 40<\/td>\n<\/tr>\n \nRated short current switching current(Peak value)<\/td>\n KA<\/td>\n 63 80 100<\/td>\n<\/tr>\n \nRated peak value withstand current<\/td>\n KA<\/td>\n 25 31.5 40<\/td>\n<\/tr>\n \nRated peak value withstand current<\/td>\n KA<\/td>\n 63 80 100<\/td>\n<\/tr>\n \nPower frequency wtihstand voltage<\/td>\n KV<\/td>\n 95<\/td>\n<\/tr>\n \nLightning impulse withstand voltage(Peak value)<\/td>\n KV<\/td>\n 185<\/td>\n<\/tr>\n \nRated operating sequence<\/td>\n <\/td>\n O-0.3s-CO-180s-O<\/td>\n<\/tr>\n \nBreaking current frequency under rated short circuit<\/td>\n Times<\/td>\n 20<\/td>\n<\/tr>\n \nMechanical life<\/td>\n 10000<\/td>\n<\/tr>\n \nBreaking time<\/td>\n ms<\/td>\n \u226480<\/td>\n<\/tr>\n \nSingle capacitor bank breaking current<\/td>\n A<\/td>\n 630<\/td>\n<\/tr>\n \nBack to back capacitor bank breaking current<\/td>\n 400<\/td>\n<\/tr>\n \nRated operating voltage<\/td>\n V<\/td>\n DC\/AC:100\/200<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/h5>\n\u00a0<\/strong><\/h4>\n <\/p>","protected":false},"excerpt":{"rendered":"
ZN85-40.5 is a 40.5kV (33kV\/35kV) indoor AC vacuum circuit breaker (VCB) with handcart design, solid-embedded poles and spring operating mechanism. It features compact size, excellent insulation and long service life, widely used in medium-voltage power distribution.<\/p>","protected":false},"featured_media":828,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"ZN85-40.5 Indoor Vacuum Circuit Breaker | 33kV 35kV 40.5kV VCB","_seopress_titles_desc":"ZN85-40.5 indoor high voltage vacuum circuit breaker (VCB) for 33kV\/35kV\/40.5kV systems. Handcart type, solid-embedded pole, spring mechanism, suitable for KYN61-40.5 switchgear. Factory direct supply, reliable quality.","_seopress_robots_index":""},"product_brand":[],"product_cat":[44],"product_tag":[61],"class_list":{"0":"post-827","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-vacuum-circuit-breaker","7":"product_tag-indoor-vacuum-circuit-breaker","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product\/827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/media\/828"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/media?parent=827"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_brand?post=827"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_cat?post=827"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_tag?post=827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/h5>\n\u00a0<\/strong><\/h4>\n <\/p>","protected":false},"excerpt":{"rendered":"
ZN85-40.5 is a 40.5kV (33kV\/35kV) indoor AC vacuum circuit breaker (VCB) with handcart design, solid-embedded poles and spring operating mechanism. It features compact size, excellent insulation and long service life, widely used in medium-voltage power distribution.<\/p>","protected":false},"featured_media":828,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"ZN85-40.5 Indoor Vacuum Circuit Breaker | 33kV 35kV 40.5kV VCB","_seopress_titles_desc":"ZN85-40.5 indoor high voltage vacuum circuit breaker (VCB) for 33kV\/35kV\/40.5kV systems. Handcart type, solid-embedded pole, spring mechanism, suitable for KYN61-40.5 switchgear. Factory direct supply, reliable quality.","_seopress_robots_index":""},"product_brand":[],"product_cat":[44],"product_tag":[61],"class_list":{"0":"post-827","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-vacuum-circuit-breaker","7":"product_tag-indoor-vacuum-circuit-breaker","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product\/827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/media\/828"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/media?parent=827"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_brand?post=827"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_cat?post=827"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_tag?post=827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
<\/p>","protected":false},"excerpt":{"rendered":"
ZN85-40.5 is a 40.5kV (33kV\/35kV) indoor AC vacuum circuit breaker (VCB) with handcart design, solid-embedded poles and spring operating mechanism. It features compact size, excellent insulation and long service life, widely used in medium-voltage power distribution.<\/p>","protected":false},"featured_media":828,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"ZN85-40.5 Indoor Vacuum Circuit Breaker | 33kV 35kV 40.5kV VCB","_seopress_titles_desc":"ZN85-40.5 indoor high voltage vacuum circuit breaker (VCB) for 33kV\/35kV\/40.5kV systems. Handcart type, solid-embedded pole, spring mechanism, suitable for KYN61-40.5 switchgear. Factory direct supply, reliable quality.","_seopress_robots_index":""},"product_brand":[],"product_cat":[44],"product_tag":[61],"class_list":{"0":"post-827","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-vacuum-circuit-breaker","7":"product_tag-indoor-vacuum-circuit-breaker","9":"first","10":"instock","11":"shipping-taxable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product\/827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/media\/828"}],"wp:attachment":[{"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/media?parent=827"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_brand?post=827"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_cat?post=827"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.wolunelectric.com\/vi\/wp-json\/wp\/v2\/product_tag?post=827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}