Oil & Gas

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Controllers best suited for oil & gas applications are listed below:

Model Phase Mode Voltage Current Highlights
1020 One Zero Cross 120-575 Vac 10-70 Amps Powered off of the 4/20mA loop, so no control transformer is required.
1021A One Zero Cross 120-575 Vac 10-70 Amps Accepts most commands.
1021B One Zero Cross 120-575 Vac 10-70 Amps Accepts most commands. Sync-guard smoothes out line current draw when multiple controllers are in use.
1027A One Zero Cross 120-575 Vac 50-160 Amps Accepts most commands. Features include: Sync-guard and Trans-guard.
1032A One Phase Angle 120-575 Vac 10-70 Amps Accepts most commands. Field adjustable current limiting.
3020 Three Zero Cross 120-575 Vac 10-70 Amps Powered off of the 4/20mA loop, so no control transformer is required.
3021A Three Zero Cross 120-575 Vac 10-70 Amps Accepts most commands.
3027 Three Zero Cross 120-575 Vac 85-750 Amps Accepts most commands. Features include: Sync-guardTrans-guard and on-board line fusing for most frame sizes.
3337 Three Zero Cross 208-575 Vac 200-750 Amps Accepts most commands. Features include: Sync-guardTrans-guardshorted SCR detection and on-board line fusing for most frame sizes.
FUSION Single Phase AC One Phase Angle or Zero Cross 24-600 Vac, 45-65 Hz
(Auto-Ranging)
50 - 1200 Amps 24 - 600 Vac. A microprocessor-based SCR controller operating both analog and digital interfaces. A phase angle or zero cross fired controller which linearly controls, with respect to the setpoint, the AC voltage, current, or true power applied to an electrical load. Control is achieved by means of a pair of inverse parallel SCRs.
FUSION Single Phase DC One Phase Angle or Zero Cross 24-600 Vac, 45-65 Hz
(Auto-Ranging)
45 - 1080 Amps 24 - 600 Vac. A microprocessor-based DC SCR controller operating both analog and digital interfaces. A phase angle fired controller which linearly controls, with respect to the setpoint, the DC voltage, current, or true power applied to an electrical load. Control is achieved by means of a half controlled SCR bridge.
FUSION Three Phase AC  Three Phase Angle or Zero Cross 24 - 600 Vac, 45 - 65 Hz
(Auto-Ranging)
50 - 1200 Amps 24 - 600 Vac. A microprocessor-based SCR controller operating both analog and digital interfaces. A phase angle or zero cross fired SCR controller which linearly controls, with respect to the setpoint, the AC voltage, current, or true power applied to a three phase electrical load. The 3 phase controller can be ordered in either 2 or 3 leg control with 2 leg being limited to zero cross firing. Control is achieved for 3 leg by three pairs of inverse parallel SCRs or in 2 leg by 2 pairs of inverse parallel SCRs.
FUSION Three Phase DC Three DC 24 - 600 Vac, 45 - 65 Hz
(Auto-Ranging)
60 - 1400 Amps Full Wave Rectified 24 - 600 Vac. A microprocessor-based DC SCR controller operating both analog and digital interfaces. A phase angle-fired controller which linearly controls, with respect to the setpoint, the DC voltage, current, or true power applied to an electrical load. Control is achieved by means of a six SCR bridge with freewheeling diode.
Compact FUSION Single Phase One Phase Angle, Zero Cross, Burst 24-600 Vac, 45-65 Hz
(Auto-Ranging)
10 - 160 Amps 24 - 600 Vac. A microprocessor-based SCR controller, operating with both analog and digital interfaces. Output is controlled linearly with respect to command signal and can be set to the average or RMS value of the voltage or current, as well as true instantaneous power or external feedback.
Compact FUSION Three Phase Three Phase Angle, Zero Cross, Burst 24-600 Vac, 45-65 Hz
(Auto-Ranging)
10 - 160 Amps 24 - 600 Vac. A microprocessor-based SCR controller operating both analog and digital interfaces. Can be ordered in either 2 or 3 leg control with 2 leg being limited to zero cross firing. Output is controlled linearly with respect to command signal and can be set to the average or RMS value of the voltage or current, as well as true instantaneous power or external feedback.

Learn more about firing modes here.

Learn more about load connections here.