Perko 8603 battery selector switches are among the most popular heavy duty battery switches ever produced. Their use of the traditional Perko bolt circle makes for easy installation, whether new or as a replacement. These switches can be mounted in numerous locations. And as ignition protected switches, they can be installed in the engine rooms of gasoline powered boats.
These heavy duty switches are rated at up to 380 amps continuous and 850 amps intermittent (see specifications). An alternator field disconnect feature is standard. The 90° rotation feature of the knob allows users to feel the switches position in no light situations and the classic shape of the knob makes it easy to turn.
In addition to doing everything a battery disconnect switch does, battery selector switches permit battery selection (of two or more batteries) for specific purposes including starting engines, running accessories or even recharging. They allow for the use of one or more batteries in systems with one or more engines and facilitate putting batteries in parallel for emergency starting when one or both batteries are substantially discharged. Perko battery switches are designed for surface mounting. Heavy duty disconnect switches have bright red polycarbonate reinforced housings for safety with large easy-to-turn black knobs. The housing of the heavy duty switches are red fiber-reinforced polycarbonate. Selector switches are designed with a "make before break" feature. This allows switching between the "1", the "ALL" and the "2" positions while the engine is running. Models with an "Alternator Field Disconnect" feature offer protection for Non-Unitized Alternators should the switch accidentally be turned to the "OFF" position with the engine running. High conductivity studs are long enough to handle more than 1 cable and strong enough for torque needed for secure connections.
| Name | Value |
| Dimension [Inch] | 5 - 1/4 square |
| Depth [Inch] | 3 - 3/8 |
| Capacity Continuous | 380 A |
| Capacity Intermittent | 850 A (5 min ON, 5 min OFF) |
| Terminal Stud Size [Inch] | 1/2 |
| Screw Size | #10 |
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