The R series controllers are available in three configurations.
R1 - single phase control
R2 - three phase two legs controlled, comprised of (1) R1 and (1) R slave.
R3 - three phase three legs controlled, comprised of (1) R1 and (2) R slaves.

The R1 is a proportional, zero voltage switched power controller capable of delivering 1-98% of the applied line voltage to the directly connected electric heaters. This is accomplished by varying the percentage of AC voltage cycles conducted by an SSR. The R series will not control transformers or motors.
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Item #

Item Name

Input Signal

Supply Voltage

Load

Phase

R1-48-15 N/A R1-48-15 Series On-Off Solid State Contactor SCR Power Controller N/A 4-32 VDC N/A 48 to 480 VAC 50/60 Hz N/A 15 AMPS N/A 1
R2-48-15 N/A R2-48-15 Series On-Off Solid State Contactor SCR Power Controller N/A 4-32 VDC N/A 48 to 480 VAC 50/60 Hz N/A 15 AMPS N/A 3
R3-48-15 N/A R3-48-15 Series On-Off Solid State Contactor SCR Power Controller N/A 4-32 VDC N/A 48 to 480 VAC 50/60 Hz N/A 15 AMPS N/A 3
R1-48-25 N/A R1-48-25 Series On-Off Solid State Contactor SCR Power Controller N/A 4-32 VDC N/A 48 to 480 VAC 50/60 Hz N/A 25 AMPS N/A 1
R2-48-25 N/A R2-48-25 Series On-Off Solid State Contactor SCR Power Controller N/A 4-32 VDC N/A 48 to 480 VAC 50/60 Hz N/A 25 AMPS N/A 3
R3-48-25 N/A R3-48-25 Series On-Off Solid State Contactor SCR Power Controller N/A 4-32 VDC N/A 48 to 480 VAC 50/60 Hz N/A 25 AMPS N/A 3
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1