Description
Perko Battery Selector Switch w/ Key Lock | Boat Supply Store
This switch mitigates parasitic drain and ensures a single battery remains dedicated for starting by providing a positive disconnect for the alternator field. Engineered for medium-duty marine applications, it safely manages dual battery systems with a continuous rating of 200 amps at 12-48 volts DC. Its integrated key lock mechanism prevents unauthorized operation, crucial for maintaining system integrity offshore.
Key Features
- Secure Key lock mechanism prevents unauthorized use
- Efficient Alternator field disconnect minimizes parasitic drain
- Robust Medium-duty construction for reliable operation
- Versatile Capable of switching between two battery banks
- Safe Continuous rating of 200 amps at 12-48 volts DC
- Durable Corrosion-resistant materials for marine environments
- Intuitive Simple dial operation for easy battery selection
- Integrated Compact design for straightforward installation
Specifications
| Product Specifications | |
|---|---|
| Duty Rating | Medium Duty |
| Voltage Rating | 12-48 VDC |
| Continuous Amperage | 200 A |
| Intermittent Amperage | 350 A |
| Cranking Amperage | 600 A (5 sec) |
| Terminal Stud Size | 3/8"-16 |
| Ignition Protected | Yes |
Who This Is For
Boaters requiring reliable battery management for dual battery systems, especially those concerned with parasitic drain and securing their electrical system. This switch is ideal for vessels operating in demanding marine environments where dependable power is paramount.
How It Compares
| Feature | Perko Battery Selector Switch w/ Key Lock | Blue Sea Systems |
|---|---|---|
| Alternator Field Disconnect | Yes | Yes |
| Key Lock | Yes | Yes |
| Continuous Amperage | 200 A | 150 A |
| Voltage Rating | 12-48 VDC | 12-32 VDC |
Common Concerns Answered
Will this switch prevent my batteries from discharging when the engine is off?
Yes, the alternator field disconnect feature specifically prevents parasitic drain from the alternator, and the ability to select 'Off' ensures batteries are disconnected from all loads.
Is this switch suitable for a large offshore fishing boat?
Absolutely. With a continuous rating of 200 amps and robust construction, it is designed for medium-duty marine applications like offshore vessels where reliable power is critical.
Can the key lock be bypassed easily?
The integrated key lock is designed for security, deterring casual tampering and unauthorized operation of your vessel's electrical system.
Frequently Asked Questions
What is the primary benefit of the alternator field disconnect?
It prevents the alternator from energizing when all battery switches are in the 'Off' position, thus eliminating parasitic drain and protecting the battery from discharge.
What is the maximum voltage this switch can handle?
This switch is rated for up to 48 volts DC, making it suitable for a wide range of marine electrical systems.
How many battery positions does the switch have?
The switch allows for selection between Battery 1, Battery 2, Both, and Off, providing comprehensive control over your power sources.
What are the dimensions of the mounting hole required?
While specific hole size isn't detailed here, the terminal stud size is 3/8"-16, which is standard for medium-duty marine switches. Consult the manual or product diagrams for exact mounting hole specifications.
What is the difference between continuous and intermittent amperage ratings?
The continuous rating (200A) is the maximum current the switch can handle indefinitely, while the intermittent rating (350A) is the maximum for short durations, typically for specific operations like winching.
