Merit Brass A2K30R 250V RK1 Fuse 30 Amp

Product Description

The MERIT BRASS A2K30R is a Class RK1 time-delay fuse rated at 30 amps and 250 volts, designed for overcurrent protection in demanding electrical distribution applications. Class RK1 fuses offer superior current-limiting performance compared to standard Class K fuses, providing faster response to fault currents while still tolerating normal inrush loads. Electricians and electrical contractors install this fuse type in fusible disconnect switches, motor branch circuits, and control panels where tight current-limiting characteristics are required by code or equipment specification. The compact form factor and standard RK1 blade configuration make field replacement straightforward.

This fuse is suited for use in commercial and industrial electrical systems operating on 250-volt circuits with continuous loads up to 30 amps. Typical applications include motor protection, HVAC equipment disconnect circuits, and industrial control panel branch protection. The Class RK1 rejection feature physically prevents substitution with lower-performing fuse classes, helping maintain the integrity of the overcurrent protection scheme throughout the life of the installation.

Key Features

• Class RK1 current-limiting design for superior fault protection
• 30-amp continuous current rating
• 250-volt AC rating suitable for standard single-phase and three-phase distribution
• Time-delay characteristic accommodates motor and transformer inrush without nuisance opening
• Rejection-style ferrule prevents substitution with lower-class fuses
• Sold in packs of 10

Compatibility

Designed as an OEM-style replacement or service fuse for Class RK1 fusible disconnects, motor-circuit switches, and distribution panelboards accepting 250-volt RK1-class fuses.

Installation Notes

Installation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always de-energize and lock out the circuit before opening the fusible disconnect or panel. Use an appropriately rated fuse puller to remove and install blade-type fuses. Verify that the replacement fuse ampere rating and voltage rating match the equipment nameplate before restoring power.

Technical Specifications

• Amperage: 30 amps
• Voltage: 250 volts
• Fuse Class: RK1
• Package Quantity: 10 per pack
• Dimensions (L x W x H): 3.000 inches x 2.060 inches x 1.190 inches
• Weight: 0.53 pounds
• UPC: 78200191509

Standard Information

• Brand: MERIT BRASS
• Manufacturer Part Number: A2K30R