Edison's UL Class RK5 dual-element, time-delay fuses provide economical solutions to overcurrent protectioni. Available in both 250Vac and 600Vac, with 200kA RMS Sym interrupting ratings and sizes ranging from 0 to 600 amp.

Bussmann Time Delay Fuse, Current Limiting, Series: ECSR, Indicating/Non-Indicating: Non-Indicating, 40 A, 600 V, 200 kA Interrupt, Class: RK5, 10 s at 500% Response, Ferrule Terminal, Holder Mount, Cartridge Body Type, Dual Element, 1.06 in Dia x 5.5 in L Body Size

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/PONC15_Catalog.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/PONC15_Catalog.pdf
• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/ECSR40_Specification_Sheet.pdf https://www.iesbuy.com//ASSETS/DOCUMENTS/ITEMS/EN/https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/ECSR40_Specification_Sheet.pdf
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• True dual element construction allows sizing of 125% FLA for motor backup protection
• Superior overload and cycling capabilities
• Current limiting provides component short circuit protection
• Provides motor overload, ground fault and short circuit protection
• Helps protect motors against burnout from 1-phasing on 3 ph systems
• The time delay characteristics of these fuses typically allows them to be sized closer to the running ampacity of inductive loads to reduce cost and provide improved over current protection
• These fuses will override normal equipment current surges to reduce unnecessary fuse openings
• Dual element fuses can be applied in circuits subject to temporary motor overloads and surge currents to provide both high performance short circuit and overload protection
• The overload element provides protection against low level over current of overloads and will hold an overload which is five times greater than the ampere rating of the fuse for a minimum of 10 s
• 10 s minimum at 500% of ampere rating response time