FRS-R-12 - 12Amp Fuse

FRS-R-12 - 12Amp Fuse

Get dependable performance where you need it most. The Eaton Bussmann FRS‑R‑12 is a dual‑element, time‑delay fuse rated at 12 amps and built for heavy‑duty protection in industrial and commercial electrical systems. With a voltage rating of 600 VAC or 300 VDC, this fuse delivers a 10‑second (minimum) time−delay at 500% of its rating—making it ideal for motor startup and inrush conditions without nuisance blowing. Its interrupting capacity reaches up to 200 kA at 600 VAC and 20 kA at 300 VDC, offering high fault‑current protection in demanding environments. Designed in the Class RK5 format with ferrule‑end x ferrule‑end connections and a 9.63″ length by 1.61″ diameter body, it fits standard RK5 fuse blocks for easy integration. If you’re looking for a reliable, time‑delay fuse with strong fault‑clearing capability and the performance to back up critical loads, this fuse delivers with confidence.

Key Features and Benefits

• Time‑Delay Dual‑Element Design: Permits temporary overloads (as seen with motor inrush or transformer energizing) while still responding fast to real fault conditions.
• High Fault‑Current Interrupting Capability: Rated for up to 200 kA at 600 VAC and 20 kA at 300 VDC, ensuring safe operation in high‑stress circuits.
• Standardized RK5 Format: Uses familiar ferrule‑end terminations in a classic 9.63″ x 1.61″ cartridge size so you can drop it into many standard fuse holders with minimal hassle.
• Non‑Indicating Construction: Keeps the design simple and reliable, with no external indicator to maintain.
• Engineered for Harsh Conditions: While not labelled “robust,” the build is crafted to withstand the rigors of industrial applications, giving you peace of mind in demanding installations.

Technical Specifications

• Catalog Number: FRS‑R‑12
• Amperage Rating: 12 A
• Voltage Rating: 600 VAC / 300 VDC
• Interrupting Rating: 200 kA at 600 VAC, 20 kA at 300 VDC
• Response Time: Minimum 10 seconds at 500% of rated current
• Fuse Class: RK5
• Connection Type: Ferrule‑end x ferrule‑end
• Fuse Indicator: Non‑indicating
• Dimensions: 9.63″ (L) × 1.61″ (W) × 1.61″ (H)
• Weight: ~1.3 lb

Material Compliance and Certifications

• Complies with electrical protection standards, including UL 248‑12 and CSA C22.2 No. 248.12 for Class RK5 fuses.
• CE Marked for global use.
• Manufactured by a trusted name in circuit protection, ensuring you meet both performance and safety benchmarks.

Where It Works Best

• The FRS‑R‑12 shines in environments where both inrush currents and high fault levels exist. Typical applications include:
• Motor control centers and large HVAC units that see frequent start‑up surges;
• Industrial machinery and equipment with inductive loads or transformers;
• Lighting or power‑distribution panels in manufacturing or commercial buildings that demand high interrupt ratings;
• Control and switchgear assemblies where downtime must be minimized and fault protection must be reliable.