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 Defender Seal

Newmar StartGuard

  • Output: 20 Amps Max. @ 12 Volt DC
  • Input: 13.8 - 14.8 Volt DC Nominal / 15.5 Volt DC Max.
  • Provides Supplemental Power to Sensitive Electronics When Starting Engine
  • Item #: 
    Model #: 
    Shipping Weight: 
    5.60 Lbs.
    List Price: 
    Our Price:
    Status:    In Stock


    Newmar® StartGuard™ DC Power Conditioner


    • Prevents abrupt DC system voltage drops during engine cranking which may cause microprocessor-driven communication and navigation electronics to "dump" programmed memory
    • Provides supplemental power to sensitive electronics while the engines are being cranked
    • Contains a sealed, rechargeable internal battery which is switched on-line whenever starter switch or solenoid is engaged
    • While the engine is running StartGuard automatically goes off-line and internal battery is recharged by alternator
    • (2) separate sense terminals are provided for vessels with dual engines or ignition switches
    • 2-year limited warranty


    • Newmar Model No. NS-12-20
    • Input Voltage: 13.8 - 14.8 Volt DC (nominal) / 15.5 Volt DC (max.)
    • Relay Activation Input Voltage: 7 - 15 Volt DC
    • Output Amperage: 20 Amps max.
    • Battery: 12 Volt DC, 4.0 Amp-hour, sealed rechargeable, 5 - 7 year life (typical)
    • Back-Up Capacity (fully charged):
      • 20 Amps / 1 minute
      • 18 Amps / 2 minutes
    • Operating Temperature Range: 32° - 104° F
    • Dimensions: 8.25" H x 4.9" W x 3.5" D

    For further details see Operator's Manual for this product

    WARNING: This product MAY expose you to chemicals, which are known to the State of California to cause cancer, birth defects and/or other reproductive harm. For more information go to

    Blue Sea Systems Common BusBar
    Item #: 201439
  • Continuous Amperage: 130 Amp AC / 150 Amp DC
  • Max. Operating Voltage: 300 Volt AC / 48 Volt DC
  • Terminal Screw: 10 x #8-32, Terminal Stud: 2 x 1/4"-20
  •  Include

    Model #:
    Blue Sea Systems L-Series Solenoid Switch - 12 / 24 Volt DC
    Item #: 204929
  • Applications: Universal, Integrated Coil Control Provides High-Amp Switching
  • Type: Single-Direction Solenoid Controls (1) Operation (Up or Down)
  • Continuous Rating: 250 Amp, Nominal Voltage: 12 / 24 Volt DC
  •  Include

    Model #:
    Blue Sea Systems MiniBus Common BusBar
    Item #: 201689
  • Continuous Amperage: 100 Amp DC
  • Max. Operating Voltage: 300 Volt AC / 48 Volt DC
  • Terminal Screw: 6 x #8-32
  •  Include

    Model #:

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