The SB6100 detects leakage current and interrupts the circuit, significantly reducing or eliminating the shock potential. One key part of the additional safety features is that the SB6100 also monitors the ground wire from the SB6100 to the load for continuity. 如果接地线断开或接触不良，SB6100会发出警报并断开电源。
The combination of a wet environment, stainless steel equipment and conductive surfaces creates a situation where shock is more likely to occur. Equipment such as fryers, mixing equipment and electric ranges must be movable to meet sanitation standards, requiring plugs to be used. Flexible cords are prone to wear and tear over time, and worn insulation increases a worker's risk for electrical shock. The National Electrical Code (NEC) 2017 version and later, now requires using a ground-fault circuit interrupter (GFCI), like the Littelfuse SB5000 Shock Block, for 208-volt three-phase applications up to 100 A. Its use on this equipment protects workers from electric shock and ensures both NEC, and health and sanitation code compliance.
The NEC 210.8[B] code requires GFCI protection for any plug and cord equipment that is 208 V, 3-phase and 100 A or below. Plug-in equipment such as dryers, mixers, cutting equipment, and conveyers fall into this category and must be protected with a GFCI. The Littelfuse SB5000 will meet this code requirement for your facility, but the protection doesn't stop at 208 V. The Littelfuse Shock Block is also offered as Special Purpose GFCI protection all the way up to 600 V-personnel protection for all situations.
Special purpose GFCIs are required in industrial facilities and construction to meet the requirements defined by UL 943C. C类GFCI旨在用于线间电压为480 V或以下、断路电平为20 mA的三相系统，而D类GFCI则用于600 V系统。工业Shock Block具备自动化自检测功能，且符合UL 1998程序可控元件用软件标准。
Shock Block ground-fault protection has been recognized for years for its award-winning technology. Winner of an Academy Award® for Scientific and Engineering Achievement, the portable, rental Shock Block is designed to protect actors, film-crew and equipment on sets where water or moisture can create electrical hazards.
A municipal water utility company, that supplies water to more than three million residents, wanted to protect its workers from shock hazards. The facility had two tanks the size of Olympic swimming pools containing 7-10 hp submersible pumps running on 600 V. Once or twice a year the tanks must be cleaned by hand, and workers enter while the water is still present and the pumps are running. The solution was the Littelfuse Industrial Shock-Block™ SB6100 EGFPD. 该公用事业公司将EGFPD安装在为每个泵供电的电机控制中心。 The EGFPDs operate like an industrial ground-fault circuit interrupter. If a device senses a ground fault above a trip setting, it will open the circuit very quickly to protect workers from shock.
溶液开采需要持续的水供应。 A large solution mining company has pump stations located near the water supply to pump the water in for processing. The water needs to be filtered before it is pumped to the mine so there is a filter screening the water intake. 即使在泵站内安装了第二个过滤器，岩石、沙子和碎片仍会进入泵站。通常，员工必须每年一次借助潜水泵清理集水槽中的碎屑。 Having a submersible pump running while the employee is cleaning leaves them at risk for electrical shock. The Industrial Shock-Block™ was the solution. They mounted the EGFPD on the wall inside the pumping station along the river bank. Because the Industrial Shock-Block™ is lightweight, the wall-mount installation among the electrical cabinets worked for this application. Now when a worker goes into the pumping station to clean the sump, they will be protected by the Industrial Shock-Block™.
美国西部的一家制砖厂将粘土加工成砖块和其他建筑材料，用于住宅和商业项目。 Part of this process involves wet saws that operate at high voltage (480 V) and it is a wet process. The company managers wanted to make sure operators were safe from electrical ground faults. 工厂电工与犹他州盐湖城的一家Littelfuse经销商讨论了他的担忧，该经销商的代表建议使用Littelfuse的设备接地故障保护器件（EGFPD）。 The Industrial Shock-Block™ SB6100 was installed between the motor control center and the face-cut saws on a manufacturing line built in the 80s. 经过一些实验，确定 30 mA 是防止误脱扣的最低设置。 If the device senses a ground fault at or above that threshold, it opens the circuit within 20 ms - fast enough to prevent worker injury or death from dangerous electrical shock.
