Eaton RES-45 Fuse - 10 kAIC at 250 Vac
Part Number: RES-45
Quick Summary
The Eaton RES-45 fuse is a time-lag protective device designed for industrial and commercial electrical systems. This fuse helps engineers avoid nuisance trips during inrush while still delivering reliable overcurrent protection. While specific CE, SIL, or IP certifications aren’t listed for this model, it features Class H construction and a 10 kAIC interrupt rating at 250 V, with a 600 V rating. The RES-45 aligns with the Bussmann series standards, offering a compact footprint and standard packaging for straightforward procurement and stocking. In practice, this translates to improved uptime, predictable protective behavior, and simplified maintenance planning for panel builders and installers.
Product Information
Extended Description
RES-45 Eaton: Eaton Bussmann series RES fuse, time lag, non current-limiting, Industrial and commercial structures, 45 A, Class H, Non-indicating, 10 kAIC at 250 Vac, Standard, 10, 600 V
Product Name
Eaton Bussmann series RES fuse
Catalog Number
RES-45
UPC
051712110457
EAN
5027590137126
Product Length/Depth
0.78 in
Product Height
5.5 in
Product Width
0.78 in
Product Weight
0.29 lb
Warranty
Not Applicable
Compliances
Not Applicable
Amperage Rating
45 A
Interrupt rating
10 kAIC at 250 Vac
Voltage rating
600 V
Packaging type
Standard
Class
Class H
Fuse indicator
Non-indicating
Quantity
10
Special features
Super lag, time lag, non current-limiting
RES-45~SUPER LAG RENEWABLE FUSE 45/600
RES-45~SUPER LAG RENEWABLE FUSE 45/600
Bussmann series Fuseology
Eaton Specification Sheet - RES-45
Time-lag design enables inrush tolerance while preserving fault protection, reducing nuisance trips during motor starts and high-load transitions. Business impact: smoother startup sequences and less unwarranted downtime. Application: motor feeders and HVAC equipment in industrial plants where surge currents are common. 45 A rating with a 10 kAIC at 250 Vac ensures fast fault clearance for single-phase and small three-phase loads without overstressing conductors. Business impact: protects upstream feeders and reduces arc-flash exposure by preventing cascading trips. Application: distribution panels and branch circuits in commercial facilities. Class H construction with non-indicating fuse indicator keeps panel aesthetics clean and reduces maintenance checks. Business impact: simplified visual status and fewer misreads in crowded control panels. Application: control cabinets and power distribution blocks. Compact footprint (0.78 in W x 5.5 in H) and standard packaging (10 units) simplify installation and stocking. Business impact: faster replacement, lower inventory costs, and easier retrofits. Application: retrofit projects and new builds. Compatibility with Eaton Bussmann series parts ensures reliable interchangeability and availability of accessories. Business impact: reduces engineering effort and procurement risk. Application: any system using Bussmann-compatible fuses. Some users express concern about time-lag versus fast-acting fuses; RES-45’s true time-lag behavior balances inrush tolerance with robust short-circuit protection. This design supports predictable protection in industrial panels and reduces downtime in demanding environments.
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FAQs
Yes. The RES-45 is a 45 A, 600 V time-lag fuse with a 10 kAIC interrupt rating at 250 Vac, designed for standard Bussmann series holders and panels. Its Class H construction and Standard packaging ensure straightforward mounting in common industrial enclosures and control cabinets.
The RES-45 delivers a 10 kAIC interrupt rating at 250 Vac with a time-lag response, meaning it tolerates inrush currents without nuisance trips while still clearing faults rapidly. This makes it suitable for motor loads and equipment with startup surges in industrial and commercial environments.
Industrial and commercial structures that require reliable protection for motor feeders, distribution panels, and power distribution blocks benefit from RES-45. Its non-indicating Class H fuse design keeps control panels tidy while providing robust protection against overcurrent events in demanding facilities.
The data provided does not list CE, SIL, or IP certifications for this model. While it offers standard electrical ratings (45 A, 600 V, 10 kAIC at 250 Vac) andClass H construction, customers should consult the official datasheets or contact Eaton for confirmation of any regulatory certifications relevant to their region.
Maintain standard spares of RES-45 (10 per packaging) to minimize downtime. Replace fuses after a fault event promptly using an exact RES-45, ensuring correct amperage and voltage ratings. The time-lag feature helps reduce unnecessary outages, contributing to lower maintenance costs and improved system uptime in busy facilities.