此款开关是英国原装进口，技术资料都是英文的，有需要咨询的，直接打公司电话或者QQ在线咨询。
工作电流出现大幅度波动可能导致电机、皮带失效、打滑或机械故障，这可能给用户的生产过程造成危险。钳形设计是一种理想的解决方案，因为它能够轻松夹在现有的电缆或者导线上。这些开关都提供工业标准的135A 或200A 输出和极低的固定设定点或可调节设置点，当达到规定电流时开关动作。
此款交流电流感应开关，可用于通过穿心电流的感应，隔离交流电流，直流控制交流负荷，如继电器，路灯，风扇，功率器件和电路的过载，短路保护，电流检测，电流冲击保护，电机漏电检测，广泛应用于：变电站，变频调速装置，逆变装置，电解电镀，电力机车，煤矿工作等自动化行业。
Description
The HFW series of AC current switches activate a normally open (NO) contact closure via a solid-state switch whenever the monitored primary circuit current exceeds a pre-set level. Models are available to switch various load types, feature integral LEDs to indicate device power and also the switch status and can be provided in solid or split core configuration. The HFW-Axx models include a multi-turn adjustment to set the trip threshold to the desired value and the HFW-Fxx models operate as a go/no-go status indicators with a factory set minimum threshold value.The switches can monitor up to 200 Amps continuous and feature an auto-rangecircuit to eliminate manual jumpers. All models are UL, CE and RoHS compliant.The HFW series current switches are accurate, reliable, easy to install and require less servicing than differential pressure switches, or flow switches. The HFW series current switches can be used to monitor devices with a maximum continuous operating current of up to 2 0 0 Amps and the power supply is induced from the conductor being monitored. All of these units come with anunconditional 5 year limited warranty.
Features
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Auto-ranging up to 200A
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Power induced from monitored conductor
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True digital switching and very low leakage
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Small compact size
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Easy field adjustment with status LED’s
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Choice of output rating
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Fixed or adjustable setpoint
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Five Year Warranty