Model PF3 SCR Power Control (350-500A)

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PF3, Three Phase, Phase Angle Control, 350-500A for Resistive, Transformer and Inductive Loads

  • $6270.00

PF3 SCR Power Controls, Phase Angle (Three Phase, 350-500 Amps)

PF3 series SCR power controls are three phase, phase angle fired SCR power controls designed to deliver maximum power control with very high reliability. Phase angle fired units delay the turn on point in each half cycle of the sine waves for precise power control. This model can be used with resistive, inductive and transformer coupled loads. When the optional current limiting is utilized this model can be used with heaters that have a significant change in resistance during heat up. Other common applications for this model include IR heating and vibratory feeders.


AC Voltage Input

AC Voltage Output


Phase Angle Fired

Can Be Used with Infra-Red Heaters and to control Vibratory Feeders

Suitable for 3 Phase 3 or 4 Wire Systems


Shipment in 2 weeks (Expedited Delivery Possible).


Load Type:Resistive, Inductive and Transformer Loads
Control Method: Phase Angle Firing of back to back SCRs
Voltage Ratings:Models available for up to 600VAC
Current Ratings: 350-500 Amps
Command Signals:Most standard process signals are supported
Isolation:2500V RMS from power circuit to command signal and ground
Bias and Gain Adjustments: Multi-turn

Ambient Temperature Range:0-50 Degrees C Operating, 0-70 Degrees C Storage
Relative Humidity:0-95% Non-condensing

Agency Approvals:UL, cUL Listed, CE Compliant
Warranty:5 Years


PF3 SCR Power Control 350-500A Dimensions

Additional Information

Click Here to Download Product Manual

Click to contact ISE with application assistance, product selection help or models not listed.   Additional models are available.

    • Weight
      75 lbs
    • SKU
      PF3 350-500A
    • Mnf#/Vendor#
      PF3 350-500A
  • Voltage
    (120) 120 VAC, (240) 208 or 240 VAC, (400) 400 VAC, (480) 480 VAC, (575) 575 VAC
  • Current Rating
    (350) 350 Amps, 350-LG) 350 Amps with Line and Load Lugs, (500) 500 Amps, (500-LG) 500 Amps with Line and Load Lugs
  • Thermostat Option
    (NO) N.O. Thermostat, (NC) N.C. Thermostat
  • Options
    None, (CL) Current Limit and Over Current Trip, (OC) Over Current Trip, (CR) RMS Current Regulation, (PR) RMS Power Regulation
  • SCR Failure Alarm
    None, (SF) Include SCR Failure Alarm
  • Load Unbalance Alarm
    None, (UB) Include Load Unbalance Alarm
  • Command Signal Input
    (01) 4-20mA, (02) 0-10 VDC, (03) 0-5 VDC, (05) Manual Pot Input (Requires 5K Pot)
  • Manufacturer
    Ametek HDR
  • Made In USA
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