FRS-R-9 - 9Amp Fuse

FRS-R-9 - 9Amp Fuse

The Bussmann / Eaton FRS‑R‑9 is a 9 amp, Class RK5, dual‑element time‑delay fuse engineered for demanding commercial and industrial electrical environments. It is designed to accommodate inrush currents and temporary overloads—making it an excellent fit for motor‑driven equipment, HVAC systems, lighting panels, and power distribution setups. With a minimum 10‑second delay at 500% of rated current, and an interrupting rating of 200 kA at 600 V AC and 20 kA at 300 V DC, this fuse offers advanced protection for both short‑circuit events and sustained overcurrents. Its compact 5‑inch cartridge size and ferrule‑end terminals allow it to drop into existing Class RK5 setups with minimal fuss. In short: if you’re looking for trusted electrical protection in a critical power circuit, the FRS‑R‑9 is a solid choice.

Key Features and Benefits

• Time‑delay, dual‑element construction: Tolerates temporary overloads (such as motor start‑ups) while still clearing real faults fast.
• High interrupting capacity: Up to 200 kA at 600 V AC and 20 kA at 300 V DC ensures dependable fault‑clearing performance.
• Class RK5 format: Offers a broad set of application‑friendly sizing options and simplifies replacement in many standard panels.
• Standard 5‑inch body with ferrule‑end connections: This means compatibility with many existing fuse holders and panel setups.
• Engineered for cooler operation and longer component life: Thanks to its ability to handle surges and overloads during startup without nuisance blowing.
• Especially effective in systems: Where reducing downtime is critical and equipment longevity is a priority.

Technical Specifications

• Catalog Number: FRS‑R‑9
• Amperage Rating: 9 A
• Voltage Rating: 600 V AC / 300 V DC
• Interrupting Rating: 200 kA at 600 V AC / 20 kA at 300 V DC
• Response Time: 10 seconds minimum at 500% of rated current
• Fuse Class: RK5
• Connection Type: Ferrule end × ferrule end
• Dimensions: approx. 5 in length × 0.81 in diameter
• Indicator Type: Non‑indicating (no visual blown‑fuse indicator)

Material Compliance and Certifications

• UL 248‑12 compliant: (Class RK5)
• CSA C22.2 No. 248.12 compliant
• CE-marked: For applicable international markets
• RoHS-compliant: For eco‑sensitive installations (verify specific lot)

Where It Works Best

• This fuse excels in applications where you have motor control centers, industrial lighting panels, HVAC units, conveyor systems, or other inductive loads subject to inrush or surge currents. Because of its dual‑element time‑delay design, you can size closer to full‑load amps without nuisance blowing—ideal for installations where uptime matters, equipment life is under scrutiny, and space or cost constraints demand efficiency. Whether you’re managing a factory floor, a commercial building system or a power‑distribution infrastructure, the FRS‑R‑9 offers the protection you need with fewer compromises.