AC Power Supply Module Type 1 (ACP-1)

Features and Benefits

  • 25W 110 VAC Power Supply
  • Fully Sealed Enclosure (NEMA 4X, 6, 13 Protection)
  • -40°C to +65°C (-40°F to +149°F) Operating Range
  • MIL-S-901D Grade A for High Impact Shock
  • MIL-STD-167B for Vibration
  • MIL-STD-461E for Electro-Magnetic Interference (EMI)
  • MIL-STD-1399 (See Specifications) Section 300 Voltage Spike
  • Supports Hot Swapping
  • Multiple Modules Can be Paralleled to Provide Load Sharing, Uninterrupted Power During Hot Swap, and/or Redundant Power Sources

The Chameleon 25W AC Power Module (ACP-1) filters, pre-regulates, and distributes electrical power to other Chameleon modules connected to it.  Multiple power modules attached to each other and fed from different power sources can provide seamless redundancy, reducing susceptibility to power outages, or providing load sharing to increase the available power.  Power modules on the same node are always online—if one should lose input power, another will instantaneously compensate and deliver uninterrupted power to all loads.
ACP-1 units are hot swappable: should the need arise to replace one, simply swap the front panel (with attached power board) and the unit is back online—there is no need to shut off the power. When the module is swapped out, all storage capacitors are automatically discharged to prevent shocking hazard. The module also features input circuit fusing and automatic output over-current shutdown.

As with all Chameleon modules, the ACP-1 offers unequaled ruggedness.  It is specifically designed for sustained operation in severe environments, including those characterized by extreme shock, vibration, electro-magnetic interference, temperature, and/or humidity.  Its fully-sealed enclosure (sealing end-caps not pictured) ensures long-lasting operation in the grimiest settings.  In fact, Chameleon modules can operate fully submerged.

Operating Ambient Temperature Range -40°C to 65°C
Storage/Transport Ambient Temperature Range -40°C to 85°C
High Impact Shock MIL-S-901D, Grade A
Mechanical Vibration MIL-STD-167B, 0-50Hz
Electro-Magnetic Interference MIL-STD-461E
Facial/Housing Protection NEMA 1,2,4,4X,5,6,12,12K,13
Input Voltage Range 75-123VAC
Input Frequency 40 to 400Hz
Input Spike Tolerance 1000V  (2Ω source impedance)
Interface Standard Subset of MIL-STD-1399. See KB Article here for details.
Output Power 25 Watts
Output Isolation (Primary to Secondary) 1500 VAC
Maximum inrush current (115 VAC at Full Load) 12 A RMS for 5 ms
Maximum steady state input power (115 VAC at Full Load) 35 Watts
Power Factor (115 VAC at Full Load) 0.63
Turn-on time at 90 VAC 40 ms
Hold-up time at 90 VAC 30 ms
Input Fuse 1A rating, I2T=2.01 A2-sec
Supported Cable Diameters Two glands 0.24”-0.47”; two glands 0.16”-0.31”
Supported Wire Gauges 16-28 AWG
Status Readouts Power ON LED Indicator
Weight 1.5 lbs
Front Panel Dimensions 2.5” W x 6” L
Enclosure Height 3″ H

The following part numbers can be used when ordering the AC Power Supply Module Type 1 (ACP-1).

The following base module part numbers include the enclosure with EMI wiring glands, active board, and wiring hub:

Fairmount Part Number


ACP-1 or 01012-001

Chameleon 25W AC Power Module (Type-1)


Spare/Replacement Parts:

Fairmount Part Number


11015-200 Chameleon 25W AC Power Module (ACP-1) Active Board and Half-Size Cover — Replacement faceplate for ACP-1 and ACP-1PA
11016-100 Chameleon 25W AC Power Module (ACP-1) Wiring Hub Assembly — Replacement W/H for ACP-1