Overview
The Gould Shawmut A6K250R is a Class RK1 fast-acting current-limiting fuse engineered for industrial power distribution systems. Rated at 250 Amps and 600V AC, this fuse delivers high interrupting capacity and rapid response to overcurrent conditions. The A6K series from Ferraz Shawmut (parent company of Gould) is widely used in main, feeder, and branch circuit protection applications where high available short circuit currents exist.
Key Features
- Class RK1 fast-acting fuse with 200 kA interrupting rating at 600V AC
- Current-limiting design provides exceptional protection and reduces fault damage
- 250 Amp nominal rating for high-capacity circuit protection
- CSA and UL certified to standard C22.2 No. 248.12 / UL 248
- Suitable for branch/feeder circuits and backup protection in industrial panels
Technical Specifications
- Part Number: A6K250R
- Manufacturer: Gould / Ferraz Shawmut
- Fuse Class: RK1 (Class K)
- Rated Current: 250 Amps
- Voltage Rating: 600V AC
- Interrupting Rating: 200 kA at 600V AC
- Response Type: Fast-Acting
- Certifications: UL 248, CSA C22.2 No. 248.12
- DC Rating: 300V DC @ 20 kA I.R.
Typical Applications
The A6K250R is commonly used for:
- Main, feeder, and branch circuit protection in industrial control panels
- Motor circuit protection in large horsepower motor starters
- Transformer primary and secondary protection
- Power distribution boards and switchgear
- Backup protection in systems with high available short circuit currents
Compatibility & Replacements
Compatible With
- 600V AC three-phase industrial power systems
- Fused disconnect switches rated for Class RK1 fuses
- Panelboards and motor control centers accepting Class K fuses
- Industrial electrical enclosures with standard fuse clips or fuseholder assemblies
- Systems compatible with 600V AC switchgear and distribution equipment
Replaces / Drop-In Replacement For
The A6K250R may serve as a replacement for other Class RK1 250A fuses in compatible applications. However, verify compatibility with your specific system integrator or panel designer before ordering, as fuse selection depends on exact circuit requirements and available fault current ratings.
Works With
- Standard 600V AC industrial electrical systems
- Motor control centers (MCCs) with Class RK1 fuse acceptance
- Power distribution units (PDUs) and switchboards
- Ferraz/Mersen fuse blocks and holders rated for 250A
- UL 508 compliant control panels and enclosures
