• black battery disconnect switch with LED voltage display
  • black battery disconnect switch with LED voltage display mounted on wood
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Sapphire Energy

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300A Battery Disconnect Switch

300A Battery Disconnect Switch

$29.95 CAD
$29.95 CAD $29.95 CAD
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60V / 300A Heavy-Duty Disconnect Switch with Voltage Display

Ideal for Lead-Acid and LiFePO₄ Battery Banks

This heavy-duty rotary battery disconnect switch provides a reliable way to safely isolate high-current battery systems, while the integrated voltage display lets you quickly verify system status at a glance.

Note from Sapphire: We tested this disconnect switch in-house feeding an inverter at 175A for over 30 minutes.

Terminal temperatures increased by only about 26°C, remaining cool enough to safely touch.
Read the full test write-up here

Why You’ll Love This

  • Handles real-world current: Rated for 250 A continuous and 300 A for 30 minutes
  • Wide voltage range: Compatible with 5–60 V DC systems, including modern LiFePO₄ banks
  • Silver-plated copper terminals deliver excellent conductivity and corrosion resistance
  • Simple rotary ON / OFF control for dependable power isolation
  • Built-in digital voltage display makes quick battery checks easy
  • Secure bolt-style terminals reduce resistance and stay tight in mobile environments

Suggested Uses

  • Main battery disconnect for RV, van, and school bus conversions
  • Marine battery banks requiring reliable manual isolation
  • Off-grid solar and backup power systems
  • Service disconnect for inverters and DC power distribution

Safety Tip: Regularly inspect electrical connections and components for tightness, corrosion, or signs of overheating — especially in high-current battery systems.

Specifications

Operating Voltage 5 V – 60 V DC
Continuous Current 250 A
Peak Current (30 min) 300 A
Terminal Material Silver-plated copper
Terminal Size 2 × M10 bolts (power), 1 × M6 bolt (voltage display)
Control Type Manual rotary (ON / OFF)
Display Integrated digital voltage display
Application LiFePO₄ and Lead-Acid battery banks (12 V, 24 V, 36 V, 48 V systems)
Housing Heavy-duty ABS / metal-reinforced construction
Operating Temperature -20 °C to +60 °C (typical)
Mounting Surface mount
Panel mount (includes rubber seal)
Dimensions (L × W × H) 70 mm × 70 mm × 78 mm (surface mounted)

What’s Included

  • Heavy-duty rotary disconnect switch with integrated voltage display
  • Blue ring terminal for voltage display negative connection
  • Protective ABS housing
  • 4 removable ABS side access covers (install or remove as needed for cable entry)
  • Rubber gasket for panel-mount installations
  • Stainless steel machine screws and nylock nuts

Recommended Accessories: Pair this disconnect with properly sized fuses & circuit protection and a solid busbar to protect your system and keep current paths short, clean, and reliable.

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