AMR PEMCO vs. Traditional Molded Case CB’s


Increased Safety

  • Reliability of vacuum contactor – No arcing across contacts
  • Password Protected
  • Operating parameters set by foreman
  • Alerts personnel of hazardous conditions
  • Proven to withstand harsh environmental conditions
  • Low voltage and easily configurable (4 button keypad, 4×20 LCD) control unit
  • Electrical lockout for repair and maintenance – Employee shortcuts avoided
  • Customized setting and parameters – Magnetic and thermal fault settings, etc.
  • Ground fault detection – prevents electric shock from “hot” frame of equipment
  • Monitoring of “stuck pole (bottle)” reduces chance of injury


Cost and Time Savings

  • Reduction in maintenance downtime – remote electrical lockout capability
  • Eliminates molded case circuit breaker replacement – Rated for 1 million trips useful life
  • Increased trip accuracy leads to decreased troubleshoot time
  • Eliminates nuisance tripping
  • Prevents equipment damage – Phase loss and under-voltage monitoring
  • Reduction in spare parts inventory

Remote Capabilities

  • Compatible with Modbus and other PLC digital I/O
  • Labor savings in pinpointing problems and resuming production
  • Data Logging
    • Start amperage and voltage requirements
    • Fault history date and time stamp
    • Record of hours closed
    • Provides accountability for downtime
    • Over-current conditions
    • Predictable maintenance vs. unscheduled downtime
    • Spare channels for customer specifications

Specifications300 A Version450 A Version550 A Version
Load Current Range 10-300 A100-450 A100-550 A
Current Ranges10-30A, 30-90A, 100-300A100-300A, 150-450A100-300A, 200-550A


  • True ground fault function test.
  • Wide range of operating currents: 10-550 amps FLC, up to 16 times magnetic.
  • Saves fault history that can be downloaded to your personal computer.
  • Easy to configure– Four button keypad, 4×20 LCD with user-friendly menus.
  • Displays motor operating parameters- current, voltage, and phase angle.
  • Communicates with monitoring and control systems either by discrete channels or addressable RS-485.
  • Accurate and easily set trip values.


Enclosure Dimensions:5.5″W x 6.625″H x 4.625″D
(139.7mm x 168.28 x 117.48)
Enclosure Rating:Panel Mount, Powder Coated Aluminum
Unit Weight:3 lbs (1.36 kg)
Control Voltage:90-130 VAC
Operating Voltage:480-1000 VAC
Backup Battery:No
Interrupting Current:100,000 Amps
Operating Current:10-550 Amps
Operating Temperature:-40 to 135 F
Thermal Trip Time Accuracy:+/-10%
Instantaneous (Mag) Trip Range: 2x to 16x (x=Continuous Current)
Magnetic Trip Accuracy:+/-10%
Ground Fault Protection:Adjustable from 1-25 Amps in 0.1 A icrements
Low Control Voltage:Three phase circuit opens when control voltage if 80-85 VAC
Low Three Phase Voltage:Adjustable from 1-50%
Phase Current Imbalance:Adjustable from 1-50%
Low Phase Voltage Delay:Adjustable from 1-5 seconds
Phase Current Imbalance Delay:Adjustable from 1-5 seconds
Display:4 line x 20 character LCD with LED indicators
Communication Protocols:RS-485 @ 38.4 kBd, Modbus, or Stand Alone
Address Range:0-255
Close Switch:2 second hold with adjustable 0-10 second contactor close delay
Other Notes:User configurable parameters vial local display and four position keypad
security key switch
Warranty:180 Days

Head Office

PO Box 234
12187 N Scenic Highway
Rocky Gap, VA 24366

T:  +1-800-541-5583
F:  +1-276-928-1815

Hours of operation:
Monday - Friday
8:00AM - 4:30PM EST

Bluefield Facility

1960 Valley Dale Street
Bluefield, VA 24605-9454

GPS > 700 Fincastle Tnpk

T:  +1-800-428-7800
P:  +1-276-326-2611

Hours of operation:
Monday - Friday
8:00AM - 5:00PM EST

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