PT Charger Monitor/Control Unit

Newmar DC Power Onboard Phase Three Monitor and Control Unit for Marine Applications

Model PT-MCU

Designed for installation in conjunction with most models of PT Battery Chargers, this unit provides additional functionality of monitoring, control, and alarms. It contains a Digital DC volt meter with 3 battery bank sense selector, a dial that adjusts the PT charger float voltage, and AC Master circuit breaker for control and protection of charger input power.

A 10 foot wiring harness is provided for AC input and DC monitor wiring to the charger. The unit carries ABS type approval for Charging Systems, thus providing full compatibility when paired with PT chargers which are also ABS Type approved.



  • Digital readout of 3 battery bank voltages to 1/10th volt
  • Adjustable DC high/low voltage alarm
  • Output float voltage adjustment pot; permits fine tuning from -4% to +5%
  • AC circuit breaker (30A, double pole) provides overcurrent protection and manual disconnect
  • AC power ON indicator light
  • 10′ wiring harness for easy connection of PT Series Charger
  • Compatible with: PT-14W, PT-25W, PT-40U, PT-80, PT-24-8W, PT-24-13W, PT-24-20U, PT-24-45U, PT-24-95U, and PTMS-24-67


  • 120 or 240 VAC AC failure contact
  • Relay for DCV remote alarms (model DIR)
  • Harness to length


  • Anodized aluminum case
  • Heavy duty top and bottom mounting flanges
  • Waterproof wire cord grips
  • Case Size (H x D x W) Inches: 8.7 x 4.6 x 5.5 Centimeters: 22.1 x 11.6 x 14
  • Weight (Lbs./Kg.): 5.5/1.6


PT-MCU – PT Charger Interface Typical Wiring Configuration