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Blue Sea 600A HD-Series Heavy Duty On/Off Battery Switch w/ AFD
Blue Sea 600A HD-Series Heavy Duty On/Off Battery Switch w/ AFD
600A Continuous - Alternator Field Disconnect - 1/2" (M12) Studs
Key features: Continuous rating of 600A and intermittent 900A, Ignition protected for safe marine installation, Single circuit ON-OFF operation, Max voltage 32V DC.
Highlights:Input Stud: 1/2 inch (M12) tinned copper stud for battery input,Output Studs: Dual studs to accommodate multiple load cables,AFD Terminals: Connections for Alternator Field Disconnect,Mounting Hole: Accepts 1/4 inch (M6) screws for secure installation.
Technical diagram showing two mounting options: standard surface mount or panel mount requiring a 3-5/8 inch diameter hole cutout. 
Regular price
$181.00
Availability:
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DESCRIPTION
Blue Sea Systems HD-Series: High-Current Battery Isolation with AFD
Reliable Power Management for 12V and 24V Systems
The Blue Sea 600A HD-Series Battery Switch is engineered for high-demand electrical systems found in large marine vessels, RVs, and off-grid setups. Designed to manage high-amperage battery banks, this switch allows you to toggle a single battery bank to a single load group with confidence. Its ignition-protected design makes it safe for installation in gasoline engine rooms, while the robust construction ensures longevity in harsh marine and automotive environments.
Protect Your Charging System with AFD
A key feature of this model is the Alternator Field Disconnect (AFD). In the event the battery switch is accidentally turned to the 'OFF' position while the engine is running, the AFD interrupts the alternator field current before the main circuit is broken. This prevents voltage spikes that can destroy the diodes in your alternator, saving you from costly repairs and electrical downtime compared to standard isolation switches.
Built for Heavy-Duty Applications
Capable of handling continuous loads of 600A (when wired with adequate cabling), this switch is ideal for diesel engines and systems with significant power draws. The 1/2" (approx. M12) tinned copper studs provide maximum conductivity and corrosion resistance, accepting large battery cables equipped with heavy-duty lugs. The versatile case design offers flexibility, supporting both surface mounting and rear panel installation to suit your specific layout.
- High Current Rating: Handles 600A continuous and 1750A cranking (30 sec), ideal for heavy diesel starting loads.
- Alternator Protection: Integrated AFD safeguards your alternator diodes during accidental switching.
- Ignition Protected: Safe for use on gasoline-powered boats and within engine compartments (SAE J1171).
- Flexible Connection: Accepts two 4/0 AWG (approx. 120mm²) cables per terminal to meet maximum current ratings.
- Versatile Mounting: Fits standard panel cutouts or surface mounts with 1/4" (approx. M6) hardware.
Applications and Compatibility
This master battery switch is perfectly suited for managing main power in boats, camper trailers, and 4x4 setups running 12V or 24V systems (Rated up to 32V DC). Whether you are upgrading your marine electrical system or building a robust dual-battery setup for an RV, the HD-Series provides the safety and reliability required for professional-grade installations.
Secure your electrical system today. Equip your vessel or vehicle with the Blue Sea HD-Series Switch for safe, heavy-duty isolation.
SKU: BS-3001B
SPECIFICATIONS
Specifications
| Switch Type | Single Circuit ON-OFF |
|---|---|
| Color | Grey |
| Switch Positions | 2 |
| Battery Combine | No |
| Alternator Field Disconnect | Yes |
| Maximum Voltage | 32V DC |
| Terminal Stud Torque |
220 in-lb (24.86 N·m) (approx. 18.3 ft-lb; reference only) |
| Continuous Rating | 500A |
| Intermittent Rating | 900A (5 min) |
| Starting Rating (30 sec) | 1750A |
| Battery Inputs | 1 |
| Cable Clearance For 4/0 AWG Cables |
1.10in (27.94 mm) (reference only) |
| Cable Quantity to Meet Ratings | Two Cables |
| Cable Size to Meet Ratings |
4/0 AWG (120mm²) (AWG vs mm² is an approximate equivalence; reference only) |
| Mounting Holes |
Accept 1/4" (M6) Screw (1/4" ≈ 6.35 mm; M6 is 6 mm; reference only) |
| Stud Material | Tinned Copper |
| Switching Rating | 25A |
| Terminal Stud Size |
1/2" (M12) (1/2" ≈ 12.70 mm; M12 is 12 mm; reference only) |
| Weight (min / max) |
1.30–1.30 lb (0.59–0.59 kg) (approx. 590 g; reference only) |
| SKU: | BS-3001B |
| Model #: | BS-3001B |
| MPN: | BS-3001B |
WARRANTY
Blue Sea Warranty Policy
Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.
The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.
Blue Sea Systems may offer longer manufacturer support on some products at their discretion
Warranty Lengths by Product Range
| Blue Sea Product Range | Warranty Length | Application / Notes |
|---|---|---|
| Most Blue Sea Systems Products | 5 years | Applies to most Blue Sea Systems products found to be defective in materials or manufacture. |
| P12 Battery Chargers | 5 years | Warranty period starts from the original date of purchase. |
| P12 Remote Displays | 5 years | Warranty period starts from the original date of purchase. |
| Digital Meters | 3 years | Warranty period starts from the original date of purchase. |
| Vessel System Monitors | 3 years | Warranty period starts from the original date of purchase. |
Warranty Assessment and Remedy
If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.
Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.
Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.
Making a Warranty Claim
To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.
The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.
What This Warranty Does Not Cover
This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.
- Incorrect installation or wiring
- Incorrect product selection or application
- Misuse, abuse or neglect
- Physical or accidental damage
- Water ingress or environmental damage outside the product's intended use
- Unauthorised modification or repair
- Normal wear and tear
- Labour costs for removal, replacement, reinstallation or diagnosis
- Freight, travel or call-out costs unless otherwise required by law
- Products not returned for assessment when reasonably required
Manufacturer Support
Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
