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DC螺线管是用于20安至600安电流远程切换的继电器。 Littelfuse提供广泛的DC螺线管和继电器，例如固态继电器、插入式继电器和紧凑型继电器等。 浏览下面的产品选择。
Littelfuse acquired Cole Hersee in 2010 to offer their customers a more extensive portfolio of products in the commercial vehicle market. Since Cole Hersee was founded in 1924, they have been a pioneer and leader in the development of heavy-duty electrical products for the vehicle industry, and have earned a reputation for quality and value. Cole Hersee has collaborated on many basic industry standards and is a preferred supplier of over 2,000 dependable vehicle products and accessories.
Littelfuse Cole Hersee Brand products are available as standard or custom designed products to meet customer needs. Contact us to discuss the possibilities. Our engineers are on hand to design from the ground up the best solution to your application.
Make and break are terms which apply to any switching situation, but particularly to Intermittent Duty Solenoids, where the buildup of heat can cause failure of the component. Make and break are RATINGS. A particular component, such as a solenoid, may be rated for duty at a given amperage and voltage that should not be exceeded.
Make is when the switch (or solenoid) is turned On (the circuit is 'made'), and break is when the switch is turned Off (the circuit is 'broken'). Such values would need to be checked with an instrument such as a meter. Note also that Intermittent Duty Solenoids have a limitation on the time (duty cycle) they may be kept On and the time they need to recover (to allow heat dissipation.)
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