Call us today! +1 740.548.0965


300 Amp Dual Lug Contactor

InPower’s 3rd generation of DC Power Contactors are a radical design that incorporates Cool Terminal Technology to run cooler than ever, in a smaller package. And InPower’s Load Logic software can handle the high inrush current demands of large resistive, capacitive, and inductive loads. The SSC3 contactors handle your high-current loads intelligently.

Markets: Work Trucks, Delivery Vehicles, Speciality Vehicles, Emergency Vehicles, Shuttle Buses

High Current Solid-State DC Contactors [ SSC3-200A, SSC3-200B, SSC3-300 ]

Key Features:

  • Ideal auxiliary battery isolation
  • Bidirectional charging
  • LED Indicator – Switch status (On/Off)
  • Boost start the vehicle from the auxiliary battery if the chassis battery voltage is low
  • LoadLogic technology – Compensates for different loads (load startup and faults)
  • Solid-state – no moving parts
  • Extremely efficient – No need for a massive heat sink
  • Over-current, over-voltage, and over-temperature protection
  • Custom actions (timer delays, thresholds) are available via factory programming (SPCs)

Other Models:


  • Maximum Current Rating: 300 Amps
  • Operating Voltage: +7.0 to +18.0 volts
  • Operating Temperature: -40º to +185º F (85º C)
  • Low Battery Voltage Trip: <7.00 for > 250 milliseconds on BAT+
  • Loss of Ground Trip: 250 milliseconds
  • Over-Current Trip: 305 Amps +/-2 Amps for 1 Sec
  • Shorted Load Detect: 250 milliseconds
  • LED Indicator: SW State (ON/OFF), FAULT (FLASH)
  • Standby Current Draw: 12.5 milliamps max
  • Input control: >+8.0 VDC ON, <+4.0 VDC OFF
  • Weight: .50 lbs
  • Dimensions: 4.125” W x 5.125” L x 1.20” H

System Diagrams:

Mechanical Drawings:

Product Literature and Resources:

SSC3-300 Data Sheet

SSC3-300 Owners Manual

Related Products