Merit Brass A2K70R 250V Class RK1 Fuse 70 Amp

Product Description

The MERIT BRASS A2K70R is a 250-volt, 70-amp Class RK1 time-delay fuse designed for overcurrent protection in electrical distribution systems. Class RK1 fuses deliver a high degree of current limitation and are recognized for their precision in protecting motors, transformers, and feeders from both overload and short-circuit conditions. The dual-element, time-delay construction allows temporary inrush currents to pass without nuisance tripping while responding rapidly to sustained faults. Licensed electricians and electrical contractors install this fuse type in industrial, commercial, and residential service panels and disconnect switches.

This fuse is suited for applications requiring Class RK1 performance in 250-volt AC circuits. Typical installations include motor branch circuits, HVAC equipment disconnects, feeder circuits, and panelboard protection where high current-limiting capability and selectivity are required. The 70-amp rating makes it appropriate for mid-range motor loads and equipment feeders commonly found in light commercial and industrial environments.

Key Features

• 250-volt AC rated for standard single-phase and three-phase distribution circuits
• 70-amp continuous current rating for mid-range feeder and motor protection
• Class RK1 current-limiting performance for superior fault protection
• Time-delay element accommodates motor starting inrush without nuisance tripping
• Rejection-style ferrule ends prevent installation into lower-rated fuse holders

Compatibility

Designed as an OEM-style replacement for Class RK1 fuse holders and disconnect switches rated for 250 volts and 70 amps or higher.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit before removing or installing any fuse. Verify that the fuse holder or disconnect is rated for Class RK1 fuses and is sized for at least 70 amps at 250 volts. Never replace a fuse with one of a higher ampere rating than the circuit is designed to carry.

Technical Specifications

• Voltage Rating: 250 volts
• Ampere Rating: 70 amps
• Fuse Class: RK1
• UPC: 78200191519

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: A2K70R