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Cole Hersee 75920 Master Battery Disconnect Switches

Cole Hersee 75920 Master Battery Disconnect Switches are high amp capacity, IP67 sealed heavy-duty switches that provide reliable emergency power cut-off. The switches are designed to be used up to 400A with a single 4/0 cable at 12VDC or 200A in 36VDC applications, allowing users to apply the switch in various vehicles. Applications include vehicle electrical systems such as heavy trucks, off-road, construction, emergency vehicles, material handling, refuse collection, mining, agricultural or marine.

Features

  • High 400A amperage capacity with a single 4/0 cable
  • Can be used in high side or low side applications
  • Waterproof and dustproof to IP68, switches can be mounted in exposed locations
  • Composite engineered polymer housing will not rust or corrode, tested per SAE 1455 for salt, calcium chloride, and magnesium chloride
  • Built-in lockout satisfies OSHA requirements for an energy isolation device
  • Large red or yellow knob is easy to operate with gloves
  • 90° switch travel makes it easy to identify the switch position
  • Large divider on the base prevents accidental shorting of high energy cables
  • Fits standard Master Disconnect mounting pattern
  • SPST
  • Attractive styling suitable for in-cab mounting close to the driver
  • RoHS compliant

Applications

  • Local circuit protection outside of the cab
  • External accessory lighting
  • Transportation (commercial vehicle, automotive)

Specifications

  • 6V to 36V operating voltage range
  • Continuous currents
    • 400A maximum at 12V (single 4/0 cable)
    • 300A maximum at 24V
    • 200A maximum at 36V
  • Intermittent currents at 12V
    • 1000A for 90s on, 5 minutes off
    • 1500A for 60s on, 5 minutes off
    • 2000A for 30s on, 5 minutes off
    • 3000A for 15s on, 5 minutes off
  • -40°C to +85°C operating temperature range
  • IP68 protection
  • Mounting stem
    • 3/4"-16 threads
    • 18ft-lbs (24.4Nm) maximum torque
  • Knob retention screw torque
    • 7.0"-lbs ±2.0in-lbs
    • 0.79Nm ±0.23Nm
  • Copper battery terminals

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Additional Resources

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Published: 2022-05-13 | Updated: 2024-07-23