Mersen TR40R Fuse Tri-Onic® Class RK5 250V 40A Time-Delay with Copper Ferrule Connection
Mersen TR40R Fuse Tri-Onic® Class RK5 250V 40A Time-Delay with Copper Ferrule Connection
- MPN: TR40R
- UPC: 782001747916
- PPN: FER-TR40R
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CAD$8.40/ EA
Description
Tri-Onic TR-R current-limiting time-delay fuses are engineered for overcurrent protection of motors, transformers, service entrance equipment, feeders and branch-circuits. The time-delay characteristics of the TR-R safely handle harmless starting currents and inrush currents associated with today's motors and transformers.
Features
- Built with Mersen’s industry-leading Tri-Onic® technology, this 40-Amp fuse provides a minimum 10-second time-delay at 500% of its rating. This prevents frustrating nuisance blowing during high-torque motor startups and transformer inrush, allowing your industrial machinery to reach operational speeds without unnecessary power interruptions or downtime.
- his Class RK5 fuse significantly limits the peak let-thru current during a fault, effectively "snuffing out" a short circuit before it can reach its full destructive potential. By reducing the thermal and magnetic stress on your wires and controllers, it extends the lifespan of your electrical infrastructure and prevents catastrophic hardware failure during a surge.
- Rated to safely interrupt up to 200,000 Amps at 250V AC, this fuse provides a massive safety margin for modern industrial and commercial power distribution systems. This ultra-high rating ensures your facility remains compliant with the most stringent National Electrical Code (NEC) requirements and can safely withstand even the most severe electrical faults without housing failure.
- Featuring a precision-engineered rejection tip, this fuse is designed to fit standard Class R fuse clips, which prevents the accidental installation of lower-rated, non-current-limiting fuses. This mechanical safeguard ensures that your circuit protection levels are never compromised during routine maintenance, maintaining the integrity and safety of your motor control centers and disconnect switches.
Specifications
- Voltage
- 250 V AC/DC
- Interrupting Rating AC
- 200 kA
- Frequency
- 50/60 Hz
- Fuse Class
- Class RK5
- Weight
- 0.119 lb
- Connection Type
- Ferrule
- Body/Insulating Material
- PolyTube
Amperage40 A
Interrupting Rating DC20 kA
Speed/CharacteristicTime Delay
Length3 in
MountingClip
Connection MaterialCopper
RoHS CompliantYes
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