The C1P is a proportional, infinitely variable power controller capable of delivering 1-98% of the applied line voltage to the directly connected electric heaters. This is accomplished by phase angle firing a TRIAC. The C1P will not control transformers or motors.
Unit of Measure


Voltage Designations

N/A 208 to 240 VAC 50/60 Hz



Input Signal

N/A 4-20 mA (1.5 V) 75 Ohms

Supply Voltage

N/A 120/240 VAC


N/A 50/60 Hz

Operating Temperature (Ambient)

N/A 0 to 50 ºC122 ºF

Fuse Requirements (TRIAC Protection)

N/A Semi-conductor/ rectifier I2T

Response Time

N/A 10 ms

Control Method

N/A Phase Angle, Proportional

Output Voltage

N/A 1 to 98% of supply voltage

Input Isolation

N/A 2500 V


Voltage Limit

N/A Use calibration pot to reduce max. output voltage.

Manual Control

N/A Use Avatar MAP. Isolated Potentiometer.

Linear 0-5 or 0-10 VDC Analog Signal

N/A Use Avatar MAI.

Soft Start

N/A S-1 Second

Electrical Connections

N/A Check the Avatar serial tag and verify the correct voltage/ ampere ratings and input control signal for your application. Wiring must be performed in accordance with any and all applicable local and national codes. Use a minimum wire size of 12 AWG for a 20 amp C1P and a minimum of 10 AWG for a 30 amp C1P. For best results keep control signal and power wires separated.


N/A All Avatar Instruments products carry a full five year, from date of purchase, parts and labor warranty against component failure and defects in workmanship. In the event your controller fails to perform properly, contact Avatar to obtain a return authorization number. Controllers sent to Avatar for warranty service that have no apparent defect will be treated as a standard repair and a $50.00 charge will be applied. Avatar will repair or replace any unit that failed due to defective parts or assembly. This warranty DOES NOT cover damage due to shipping, abuse, misapplication or operation beyond specified rating. Furthermore, fuses & improperly fused TRIACs are NOT COVERED by this warranty. Avatar is not responsible for any subsequent or other damage experienced in use of this device.



N/A The C1P takes a 4-20 mA input signal from a front-end controller and varies the voltage applied to the electric heaters (see "WIRING DIAGRAM"). At 4 mA input, the C1P will start applying voltage to the heaters, at 12 mA the heaters will have approximately 50% of the line voltage applied to them, and at 20 mA, 98% of the line voltage will be applied to the heaters. Increasing the mA signal increases the output voltage. The C1P is a POWER CONTROLLER; it CANNOT create more voltage or current. There is no "tuning" or "tuning adjustments". TROUBLESHOOTING TIP: Overall process control results are set by the dynamic characteristics of the heaters, transfer medium, sensor, and the tuning of the front-end controller, not the power controller.