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Mersen

Mersen TRS4-1/2R 4.5A 600V Class RK5 Time-Delay Fuse

Part Number: TRS4-1/2R

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Mersen TRS4-1/2R provides a 4.5A rating within the TRS-R Series. Its key ratings are 600V AC / 600V DC and 200kA AC / 20kA DC interrupting capability. This makes it suitable where time-delay protection for motor and transformer starting currents.

Rated Current4.5A
Rated Voltage600V AC / 600V DC
Breaking Capacity200kA AC / 20kA DC
PackageClass R

Designed within Mersen’s TRS-R Series, TRS4-1/2R carries a 4.5A rating and Class RK5 form factor. Electrical limits are 600V AC / 600V DC, with 200kA AC / 20kA DC interrupting capability. For application coordination, note its time-delay protection for motor and transformer starting currents. The Class R format uses ferrule / blade (amp-dependent) terminals with cartridge/clip mounting. Typical selection contexts include Transformers, Service Entrance, Feeders. For design release, confirm coordination, dimensions and approval details in the official Mersen documentation.

Technical Specifications

Part Number
TRS4-1/2R
Manufacturer Part Number
TRS4-1/2R
Series
TRS-R Series
Fuse Type
Current-Limiting Time-Delay Class RK5 Fuse
Current Rating
4.5A
Voltage Rating
600V AC / 600V DC
AC / DC
AC/DC
Breaking Capacity
200kA AC / 20kA DC
Package / Dimensions
Class R
Mounting
Cartridge / Clip
Application
Branch Circuit Protection · Feeder circuits · Motor Circuits · Service entrance · Transformers
Standard
CSA C22.2 No. 248.12 · UL 248-12
Terminal Type
Ferrule / Blade (amp-dependent)
Fuse Speed
Time Delay
Utilization Class
Class RK5
Approvals
CSA · UL Listed
Certifications
UL Listed · CSA
DC interrupting rating
20kA

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