1.14kv 250A Low Voltage Vacuum Contactor for Mining

General descriptionThis vacuum contactor series is designed for AC power networks with a frequency of 50Hz. It has a main circuit rated voltage of 1140v and a rated current of up to 630A. It is suitable for making, breaking, frequently starting, and controlling AC motors. Additionally, it can be used to form a magnetic starter with various protection devices such as the JDB electronic integrated protector, JR9 type over current protection device, and resistance-capacitance absorber. This contactor is particularly suitable for forming an anti-explosion magnetic starter. The contactor complies with IEC 60947-4-1, GB/T 14048.4, and JB/TN 7122 standards, and its main performance indicators have reached international levels. The product is available in two operation mechanism types: coil operation mechanism type and permanent magnet operation mechanism type. The former is commonly used, but customers can choose the suitable type based on their specific application needs.Main technical parameter ItemUnit63A80A125A160A250A400A630AMain circuit rated voltagekV1.14Main circuit rated currentA6380125160250400630Main circuit making capacityA/100times63080012501600250040006300Main circuit breaking capacityA/100times50464010001280200032005040Main circuit P.F. withstand voltagekV10Electrical life AC3Ten-thousand times60Electrical life AC4Ten-thousand times6Mechanical life timeTen-thousand times100 Rated operating frequency AC3times/h600Rated operating frequency AC4times/h120Short-time operating frequency(20s)times/h2000Clearance between open contactsmm1.5±0.11.8±0.12.0±0.12.2±0.1Over travelmm0.8±0.11.0±0.11.0±0.11.0±0.1Contact circuit P/F. withstand voltagekV2Closing timems≤100Opening timems≤80  Packaging For Vacuum Circuit Breaker, pls click:  https://china-vacem.en.made-in-china.com/product-group/roqEnxmCTUYh/Vacuum-Circuit-Breaker-catalog-1.html  International fairs Company show /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1