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Mersen Tri-Onic TRS-R Class RK5 Time-Delay Fuse, 600VAC/600VDC
The Mersen Tri-Onic® TRS-R is a current-limiting, time-delay fuse in Class RK5, engineered for overcurrent protection of motors, transformers, service entrance equipment, feeders, and branch circuits. Rated 600VAC and 600VDC with an AC maximum interrupting rating of 200 kA, this fuse rides through the harmless starting and inrush currents typical of motors and transformers instead of nuisance-tripping on momentary surges. The TRS-R family is available with a choice of termination style — Blade or Ferrule — so it can be matched to the mounting configuration of the fuse holder or disconnect being used, while every version shares the same PolyTube body construction, Class RK5 time-delay characteristic, and 50/60 Hz frequency rating. Whether specifying a blade-style unit for standard clip mounting or a ferrule-style unit for compact fuse blocks, electricians and engineers get consistent, code-compliant overcurrent protection across the line.
Key Features
- Fuse Class: Class RK5 construction for reliable, code-compliant overcurrent protection.
- Time-Delay Characteristic: Engineered to hold through harmless motor starting and transformer inrush currents while still clearing genuine overloads promptly.
- Dual Voltage Rating: Rated 600V AC (UL) and 600V DC (UL), giving flexibility across both AC and DC circuits.
- High Interrupting Capacity: 200 kA AC maximum interrupting rating/breaking capacity (I1) for demanding fault-current environments.
- Selectable Termination: Offered in Blade or Ferrule connection styles to fit the specific clip or block hardware in the installation.
- Durable Body Construction: PolyTube insulating body material supports consistent performance in service entrance and feeder applications.
- Frequency Rating: Rated for 50/60 Hz systems, suitable for standard AC power distribution.
Certifications & Compliance
- RoHS Compliant
Technical Specifications
- ROHS Compliant: Yes
- Connection Type: Blade or Ferrule (selectable)
- AC Max I.R./Breaking Capacity (I1): 200 kA
- Frequency: 50/60 Hz
- Rated Voltage AC (UL): 600 V
- Rated Voltage DC (UL): 600 V
- Speed/Characteristic: Time Delay
- AC or DC: AC/DC
- Body/Insulating Material: PolyTube
- Packaging: 1 EA
Typical Applications
- Motor Overcurrent and Branch-Circuit Protection
- Transformer Feeder Protection
- Service Entrance Equipment Protection
- Commercial and Industrial Feeders
- Panelboard and Switchboard Circuits
Why Mersen?
Mersen's Tri-Onic® TRS-R fuse combines Class RK5 current-limiting performance with a 200 kA interrupting rating and a rugged PolyTube body, giving electricians and engineers dependable time-delay protection for motors, transformers, and feeders. Available in Blade or Ferrule termination to suit the mounting hardware on hand, the dual 600VAC/600VDC rating and RoHS-compliant construction make it a versatile, code-conscious choice for professional electrical installations that demand consistent, reliable overcurrent protection.
Manufacturer Resources
Mersen Product Catalog
Product Specs
- Mounting Method:
- Clip
- AC Max I.R./Breaking Capacity: I1:
- 200 kA
- ROHS Compliant:
- Yes
- Frequency (Hz):
- 50/60 Hz
- Rated voltage AC UL:
- 600 V
- Speed/Characteristic:
- Time Delay
- AC or DC:
- AC/DC
- Rated voltage DC UL:
- 600 V
- Fuse Class:
- Class RK5
- Body/Insulating Material:
- PolyTube
- list_batch:
- MERSEN-20260825
- Department:
- Electrical
- Product Group:
- Wiring Devices
- Product Type:
- Fuse
- Product Material:
- PolyTube
- Voltage Rating:
- 600V
- Series:
- Tri-Onic TRS-R
- Configuration:
- Time Delay
- Standards:
- RoHS Compliant
- Product Subgroup:
- Fuses by Type