Model ZF3 SCR Power Control (15-70A) SSR Design

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ZF3, Three Leg, Three Phase, Zero Fired, 15-70A for Resistive Loads
  • $1038.00

ZF3 SCR Power Controls (Three Leg, Three Phase, 15-70 Amps, SSR Type)

ZF3 series SCR power controls are three phase, three controlled leg, zero-fired solid state relay power controls designed to deliver maximum power control with all the reliability of much larger units. Zero fired units turn on and off full sine waves rapidly for precise power control. The controls use variable time base for very high output resolution.


AC Voltage Input

AC Voltage Output

For RESISTIVE Loads Only

ZERO FIRED Variable Time Base

Three Phase, Three Leg Control

24VAC Required to Power Electronics


Shipment in 1-2 weeks (Expedited Delivery Possible).


Load Type: Resistive Only (Not for transformer or inductive loads)
Control Method: Zero Firing of back to back SCRs
Voltage Ratings: Models available for up to 600VAC
Current Ratings: 15-70 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
Heat Sink: Electrically Isolated
Power Source Requires a 24VAC power source for electronics
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


ZF3 15-40A Dimensions
ZF3 70A 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
      13 lbs
    • SKU
      ZF3 SSR 15-70A
    • Mnf#/Vendor#
      ZF3 SSR 15-70A
  • Voltage
    (120) 120 VAC, (240) 208 or 240 VAC, (400) 400 VAC, (480) 480 VAC
  • Current Rating
    (15) 15 Amps, (15-FK) 15 Amps with Fuse Kit, (25) 25 Amps, (25-FK) 25 Amps with Fuse Kit, (40) 40 Amps, (40A-FK) 40 Amps with Fuse Kit, (70) 70 Amps, (70-FK) 70 Amps with Fuse Kit
  • Thermostat Option
    None, (NO) N.O. Thermostat, (NC) N.C. Thermostat
  • 24 VAC Transformer
    None, (TX) Include 24 VAC Transformer
  • Command Signal Input
    (01) 4-20mA (Requires 24 VAC), (02) 0-10 VDC (Requires 24 VAC), (03) 0-5 VDC (Requires 24 VAC), (05) Manual Pot Input (Requires 24 VAC and 5K Pot)
  • Manufacturer
    Ametek HDR
  • Made In USA
  • Agency Listing
    • UL
    • cUL
    • CE
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