Class RK5 Dual Non-Indicating Fuse 40 A, 20 kAIC at 125 Vdc, 3 Inch
Bussmann

Bussmann FRN-R-40 Class RK5 Dual Non-Indicating Fuse 40 A, 20 kAIC at 125 Vdc, 3 Inch

  • MPN: FRN-R-40
  • UPC: 051712101783
  • PPN: BUS-FRN-R-40

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$11.52

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Spec sheet

Description

Class RK5 Dual Non-Indicating Fuse 40 A, 20 kAIC at 125 Vdc, 3 Inch

Features

  • Engineered with a minimum 10-second time-delay at 500% of its rated current, this dual-element fuse temporarily tolerates harmless temporary surge currents. This prevents the frequent nuisance tripping commonly caused by industrial motor startups, pumps, and HVAC compressors while maintaining strict, highly accurate overload protection during sustained fault conditions.
  • Boasting an exceptional 200 kAIC at 250V AC and 20 kAIC at 125V DC, this current-limiting fuse safely interrupts massive short-circuit currents. It limits destructive thermal and mechanical energy before it can damage downstream panelboards, combination starters, and machinery disconnects, protecting your infrastructure and personnel.
  • Designed to standard Class RK5 dimensions (3 in times 0.81 in) with a physical rejection ferrule end, this fuse provides a perfect mechanical match for code-compliant rejection-style holders. This design safeguard prevents the accidental installation of lower-rated or non-current-limiting fuses, ensuring the system maintain its original UL safety listing and short-circuit protection capacity.
  • Fully certified for 250V AC and 125V DC operational environments, this 40-amp fuse provides flexible protection across a variety of industrial applications. This cross-platform compatibility allows maintenance teams to standardize their circuit protection inventory, simplifying restocking logistics for both factory floor branch distribution and commercial backup DC systems.

Documentation & Downloads

Specifications

Additional

Amperage
40 A
Interrupting Rating
20 kAIC at 125 Vdc
Length
3 in
Height
.81 in
Number of Elements
Dual
Fuse Indicator
Non-indicating
Compliance
CE Marked, UL Listed, CSA Certified
Voltage250 Vac, 125 Vdc
Time-Delay10 sec at 500% rated current
Width.81 in
ConnectionFerrule end x ferrule end
ClassClass RK5
Product Weight.11 lb

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