Current Limiting Class RK1 Fuses

LENRK/LESRK series fuses have up to 40% more current limitation and up to 350% more Amps-Squared-Second (I²t) limitation under fault conditions than EC series RK5 fuses, reducing the potential for damage. They also offer a better selection for electrical power system designers and superior short circuit protection for breakers having inadequate interrupting ratings. RK1 fuses are a practical, economical way to upgrade systems in many situations.

• LENRK Series: 10 to 600 A, 250VAC, 200kA interrupt rating
• LESRK Series: 5 to 600 A, 600VAC, 200kA interrupt rating
• True dual-element spring-trigger construction allows sizing of 125% FLA for motor backup protection
• Superior overload and cycling capabilities
• EC series and LE series fuse lines are physically interchangeable (and electrically interchangeable per UL equipment listing conditions).

Suitable for:

• AC power distribution system mains, feeders, and branch circuits
• Protection of motors and motor branch circuits
• Type 2 protection for IEC components
• General-purpose applications including lighting, heating and other non-inductive loads

These fuses meet the following agency approvals:

• UL Listed, Class RK1, Guide JDDZ, File E162363
• CSA Certified HRCI-R per C22.2, No. 248.12