• Time Delay Fuse
• Type Class RK1
• Characteristics 10 Sec Time Delay (at 500 Percent Rated Load), Dual Element, Non-Indicating
• Voltage Rating 250 VAC/VDC
• Current Rating 350 Ampere
• Interrupting Rating 300 Kiloampere (Symmetrical), 100 Kiloampere (DC)
• Terminal Type Blade
• Diameter 2.38 Inch
• Length 8.63 Inch
• Approval UL 248-12, CSA C22.2, CE
• Application Large Distribution Switchboards, Power Panelboards, Motor Control Centers, Machinery Disconnect Switches

Features / Benefits

• Fast Short-Circuit Protection Provides Optimal Arc Flash Protection to Reduce Hazard to Personnel
• Easy Selective Coordination with All Low-Peak Fuses Using Simple 2:1 Ampacity Ratio
• Current-Limiting for Maximum Short-Circuit Protection
• "No Damage" Type 2 Protection for IEC and NEMA Motor Starters When Properly Sized
• High In-Rush Current Motor Protection
• Time-Delay that Permits 130 Percent FLA Sizing for Back-Up Motor Protection
• Provides Protection Against Single-Phase Motor Damage
• Low Watt Loss Power Consumption
• Electrically Isolated End Caps for Added Safety