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Automatic AC Master Control

Automatic A/B Selector


AC Master Control Automatic AC Master Control
50A & 100A 240VAC Marine Service

The AC Master Control maximizes AC input capabilities.  This product automatically transfers loads from multiple inlets and generators (maximum of 4 Inputs) on 50 and 100 AMP, 240 VAC electrical systems. 1-year limited warranty.

  • Eliminates manual switch gear
  • Increases safety
  • Adds convenience

Superior Technology Guarantees Top Performance

  • Interlock controlled contactors insure proper connection

Eliminates Manual Switch Gear

  • No need for rotary switches and slide bar lockouts
  • All switching is done automatically

Increases Safety

  • No possibility of crossed connections

Adds Convenience

  • No more trips to the engine room when changing power sources
  • Automatically senses available inputs
  • Parallels available power to both AC panels
  • May be manually overridden for emergencies

Builder/Installer Friendly

  • Terminal blocks for all connections
  • Eliminates heavy main wiring to pilot house


Automatic AC Master Control Operation
Shore power is the dominant input (master).  Five seconds after shore power is energized with the genset running the AC master control will take the genset off line and after a three second delay automatically engage the shore power.

 

Specifications

Model Number

Input
Current

Input
Volts

Output
Current

Output
Volts

Height

Width

Depth

Weight

93-ACMC50I-B

50A

180-255VAC
50/60Hz

50A

180-255VAC
50/60Hz

12"

15"

16"

70 lbs.

93-ACMC100I-B

100A

180-255VAC
50/60Hz

100A

180-255VAC
50/60Hz

17"

20.5"

185"

100 lbs.

97-001743-A

50 Amp Strain Relief Kit

97-001715-A

100 Amp Strain Relief Kit

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Automatic A/B Selector Switch A/B Selector Switches
 


A/B Selector Switches automatically sense the location of the power source: port, starboard, fore or aft. The unit selects the AC connection and locks out a second power source. Units both electronically and mechanically lock out a secondary source. 93 units feature an aluminum housing, while 9R units feature a fiberglass housing that does not need to be grounded. 1-year limited warranty.

Benefits:

  • Easy to Install
    Flange mounted with top-side AC terminals.

  • Mechanical A to B Lockout
    Mechanically interlocked to inhibit simultaneous operation

  • Electrical A to B Lockout
    Components are electrically locked-out to inhibit simultaneous operation.

  • Up to 50 Amps Per Input
    Each input is rated to accommodate three wires plus ground at 50 Amps at 120 or 240VAC.
Specifications

Model Number

Input
Current

Input
Volts

Output
Current

Output
Volts

Height

Width

Depth

Weight

9R-ABSEL30/50-D

30/50A

120 VAC

30/50A

120 VAC

7"

13"

10"

25 lbs.

9R-ABSEL50I-D

50A

220 VAC

50A

220 VAC

7"

13"

10"

25 lbs.

93-ABSEL100I-B

100A

220 VAC 100A 220 VAC 12" 16" 15" 90 lbs.

97-001715-A

100 Amp Strain Relief Kit


Use in Conjunction with Charles C-Power®
AC Master Control for Totally Automatic AC Input




Builder's Requirements

Maximize AC input capabilities and flexibility.

  1. Automatic selection of first in (fore or aft) connection with auto lock out of second source.
  2. Electrically isolate the yacht from the dock.
  3. Boost 208 dock voltage to 230 volts.
  4. Supply 220 volts to the panel from 110 volt input.
  5. Sense AC input sources and direct power to the panel.
  6. Do all of the above automatically without manual switchgear.

Charles Solution:

  1. Install one 93-ABSEL501-A to automatically select the 220V50 amp input and one 93-ABSEL30/50 to automatically select the 110V 30 amp input.
  2. One 93-ISOBOOST50-A on the 220V input and one 93-IXFMR3/8-A on the 110V input accomplish these requirements.
  3. A 93-IXFMR3/8I can be wired for 110V 30 amp in and 220V 15 amp out.
  4. The 93-ACMC50I-A senses AC input and directs the current to the panel.
 

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