FRS-R-150 - 150Amp Fuse

FRS-R-150 - 150Amp Fuse

Designed to meet the demands of heavy‑duty industrial electrical systems, the Eaton Bussmann FRS‑R‑150 fuse delivers dependable overcurrent protection for your motor circuits, power panels, disconnects, and high‑capacity equipment. With a 150 amp rating, dual‑element time‑delay construction, and current‑limiting design, it accepts startup surges and fault currents while protecting your valuable gear. It handles up to 600 V AC (and 300 V DC), supports an interrupting rating of 200 kA at 600 V AC and 20 kA at 300 V DC, and features a 10‑second minimum time‑delay at 500 % of rated current — ideal for motor‑inrush environments that would trip ordinary fuses. Whether you’re safeguarding HVAC drives, machine‑tool feeders or lighting panels, this fuse is an excellent choice for delivering high‑capacity protection with fewer nuisance interruptions.

Key Features and Benefits

• Time‑Delay, Dual‑Element Design: Handles high inrush currents from motors and transformers, helping to prevent false blow‑outs and minimize downtime.
• Current‑Limiting Capability: Restricts fault energy and reduces damage to downstream components when a short‑circuit occurs.
• Blade‑End x Blade‑End Connection: Fits standard Class RK5 fuse holders for easy installation and replacement.
• High Interrupting Rating: Provides 200 kA at 600 V AC and 20 kA at 300 V DC, supporting advanced protection of high‑capacity circuits.
• Accommodates Surge Conditions Without Tripping: The time‑delay feature ensures normal startup spikes don’t trigger unwanted fuse blows.

Technical Specifications

• Amperage Rating: 150 A
• Voltage Rating: 600 V AC / 300 V DC
• Interrupting Rating (I^2t): 200 kA at 600 V AC / 20 kA at 300 V DC
• Response Time: at least 10 seconds at 500 % of rated current
• Fuse Class: RK5
• Connection Type: Blade‑end x Blade‑end
• Physical Dimensions & Weight: Approximately 9.63″ long × 0.81″ wide, ~0.4 lb weight

Material Compliance and Certifications

• CE Marked
• Meets UL 248‑12 and CSA C22.2 No. 248.12 standards

Where It Works Best

• This fuse is especially well‑suited for industrial and commercial installations where equipment startup surges and short‑circuit conditions demand more than standard protection. Think motor control centres, HVAC systems, disconnect panels, power‑feed panels, lighting infrastructure, or any application using large motors or heavy loads. If you’re looking for reliable protection with fewer nuisance trips, the FRS‑R‑150 is an excellent fit.