Description
The Blue Sea Systems HD Series ON/OFF Battery Switch offers robust single-circuit control, enabling or disconnecting power between a battery and a load group with absolute reliability. Built for marine-grade durability, it features ignition protection, making it safe for installation on petrol-powered boats and vessels.
Engineered to handle extreme loads, this switch supports up to 1750A cranking current, while the continuous 600A rating ensures consistent performance in high-demand electrical systems. The unit’s versatile housing allows for either surface or rear panel mounting, offering installation flexibility for both new builds and retrofits.
With the ability to connect 4/0 AWG battery cables, it is perfectly suited for heavy-duty applications across commercial, leisure, and off-grid marine systems.
Key Features
- Single circuit ON/OFF control – reliable battery isolation
- Ignition protected – safe for petrol-powered boat compartments
- Heavy-duty capacity – 600A continuous and 1750A cranking for 30 sec
- 900A intermittent rating (5 min) – handles temporary high loads
- Surface or rear panel mounting – installation flexibility
- Accepts 4/0 AWG (95mm²) battery cables – for high-current systems
- Corrosion-resistant design – built for harsh marine environments
Specifications
- Product Type: Single Circuit ON/OFF Switch
- Switch Positions: 2
- Colour: Grey
- Battery Combine Function: No
- Alternator Field Disconnect: No
- Maximum Voltage: 32V DC
- Continuous Rating: 600A
- Intermittent Rating (5 min): 900A
- Cranking Rating (30 sec): 1750A
- Battery Inputs: 1
- Cable Clearance: 1.10 in (27.9 mm)
- Terminal Stud Torque: 220 in-lb (24.86 Nm)
- Compatible Cable Size: 4/0 AWG (95mm²)
- Mounting Options: Surface or Rear Panel





