Get the protection you need at a price you'll love!
Industrial Fuses - 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 ECNR/ECSR series 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. ECNR/ECSR and LENRK/LESRK
fuse lines are physically interchangeable (and electrically interchangeable per U.L. equipment listing conditions). We recommend them as a
practical, economical way to upgrade systems in many situations.
New! ...Current ratings up to 600 amps on RK1 current limiting fuses!
A Current-Limiting Fuse meets the following three conditions:
- Interrupts all available overcurrents within its interrupt rating.
- Within its current limiting range, limits the clearing time at rated voltage to an interval equal to, or less than,
the first major or symmetrical current loop duration.
- Limits peak let-through current to a value less than the available peak current.
Select the "Technical Info" tab above (or see our catalog) to refer to the fuse selection guide, which includes a general
summary of the specifications included for each fuse type.
This selection guide does not include the many variables that can
exist for specific situations such as local codes, unusual temperature, or other operating conditions.
When selecting fuses, be
sure to comply with any applicable PUBLIC SAFETY standards that apply to Overcurrent Protection Devices (OPD).
LENRK Series - Class RK1 Dual Element Time Delay Fuses
Applications
- Recommended for AC power distribution system mains, feeders, and branch circuits
- Protection of motors and motor branch circuits
- Type 2 protection for IEC components
- All general-purpose applications including lighting, heating and other non-inductive loads
Features:
- True dual - element spring - trigger construction allows sizing of 125% FLA for motor backup protection
- Superior overload and cycling capabilities
- Extremely current limiting; provides superior short circuit component protection
Specifications
Time Delay
Voltage Rating: LENRK - 250 VAC
Ampere Rating: 10 - 600 Amps
Interrupting Rating: 200,000 RMS Symmetrical Amps
Self-Certified Interrupting Rating: 300,000 RMS Symmetrical Amps
Current Limiting: RK1 Fuse
Self-Certified DC Ratings:
- Voltage Rating: LENRK (.2-600) 125 VDC
- Self-Certified Interrupting Rating: LENRK 20,000 Amperes DC
Agency Approvals
UL Listed, Class RK1, Guide JDDZ, File E162363
CSA Certified HRCI-R per C22.2, No. 248.12
|
LESRK Series - Class RK1 Dual Element Time Delay Fuses
Applications
- Recommended for AC power distribution system mains, feeders, and branch circuits
- Protection of motors and motor branch circuits
- Type 2 protection for IEC components
- All general-purpose applications including lighting, heating and other non-inductive loads
Features:
- True dual - element spring - trigger construction allows sizing of 125% FLA for motor backup protection
- Superior overload and cycling capabilities
- Extremely current limiting; provides superior short circuit component protection
Specifications
Time Delay
Voltage Rating: LESRK - 600 VAC
Ampere Rating: 5 - 600 Amps
Interrupting Rating: 200,000 RMS Symmetrical Amps
Self-Certified Interrupting Rating: 300,000 RMS Symmetrical Amps
Current Limiting: RK1 Fuse
Self-Certified DC Ratings:
- Voltage Rating: LESRK (.25-30) 200 VDC, (35-600) 300 VDC
- Self-Certified Interrupting Rating: LESRK 20,000 Amperes DC
Agency Approvals
UL Listed, Class RK1, Guide JDDZ, File E162363
CSA Certified HRCI-R per C22.2, No. 248.12
|
NOTE: For further details or technical specifications, select the desired product category and select
the "Products" tab and click on the desired "Item Code" link, or select the "Technical Info" tab.
|
