Kissling Electrotec battery disconnect switches, distributed by Peerless Electronics, range from 200 to 500 amps. Options include single- or dual-pole configurations. Switches are (IP67) environmentally sealed, highly resistant to vibration and shock, rated for full amperage continuous duty at up to 32 VDC and feature flange or center mount with removable key option. 800/285-2121; www.peerlesselectronics.com.