53 Spec-Setter™ 3-Pole Heavy-duty safety switch is rated at 600-Volt AC and 30-Amps. Non-fusible switch accommodates copper/aluminum conductors of size 12 - 2-AWG. It has maximum load capacity of 3 hp at 240-Volt AC, 7.5 hp at 480-Volt AC, 10 hp at 600-Volt AC and 5 hp at 250-Volt DC. It operates at the frequency rating of 50/60-Hz. It measures 10.3-Inch x 8.3-Inch x 4-Inch. Switch is suitable for using as service equipment when installed in accordance with the National Electrical Code. It involves quick-make and quick-break mechanism.