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SCR Power Controllers

Item# SCR19P-H-12-125

SCR Power Controllers SCR Power Controllers
The SCR19-H and SCR39-H Series power controllers are designed to proportion electric power to resistive loads only, such as ovens, furnaces, heat sealers, etc. The controllers consist of power semi-conductors (SCRs), properly sized heat sinks, trigger circuitry, and fuses supplied on panels for surface mounting. (Note: They are not designed to drive transformers or any inductive load.) The power controller accepts a 4 to 20 mAdc output from a temperature controller.

Zero Voltage Switched Models
The SCR19Z-H and SCR39Z-H SCR power controllers are zero crossover fired, high-power solid state switched devices. Zero crossover firing eliminates the RFI generation associated with mechanical relays. With zero crossover firing, the output appears as bursts of full sine waves of line voltage which provides excellent regulation to the load.

Phase Angle Fired Models
The SCR19P-H and SCR39P-H SCR phase-angle fired power controllers turn on each SCR for a controlled portion of a half-cycle of the line voltage. The effective line voltage is determined by the portion of the line voltage delivered, which is proportional to the input control signal. Additionally, the voltage is regulated as the line voltage changes.
SCR19P-H-12-125
  • Zero Crossing or Phase-Angle Fired
  • Diagnostic LED Indicators
  • Single- or 3-Phase Load Switching
  • Extends Heater Life -- Reduces Thermal Shock
  • No Maintenance -- All Solid State Components
  • Close Control of Low Mass Heaters
  • Phase Angle with Soft Start for High Inrush Heaters
  • No Relay Noise--Contact Arc Noise Eliminated
  • Semiconductor I²T Fusing
  • Optically Isolated 4 to 20 mA Control Signal Input
  • Fan Cooled
Current Rating
Supply Voltage
Features
Quantity Price each
1-9 $1,110.00
10-24 $1,054.50
25-49 $1,032.30
50-99 $987.90
100-199 $965.70
200+ $943.50

In stock

Lead Time ( If not in Stock): 4 weeks

Product Specs

  • Maximum Ambient Temperature 50 {C} (122 {F})
  • Maximum Input Current 125 to 250 A
  • Minimum Ambient Temperature 0 {C} (32 {F})
  • Over Voltage Protection Inherent built-in immunity
  • Supply Frequency 50 to 60 Hz

The SCR19-H and SCR39-H Series power controllers are designed to proportion electric power to resistive loads only, such as ovens, furnaces, heat sealers, etc. The controllers consist of power semi-conductors (SCRs), properly sized heat sinks, trigger circuitry, and fuses supplied on panels for surface mounting. (Note: They are not designed to drive transformers or any inductive load.) The power controller accepts a 4 to 20 mAdc output from a temperature controller.

Zero Voltage Switched Models
The SCR19Z-H and SCR39Z-H SCR power controllers are zero crossover fired, high-power solid state switched devices. Zero crossover firing eliminates the RFI generation associated with mechanical relays. With zero crossover firing, the output appears as bursts of full sine waves of line voltage which provides excellent regulation to the load.

Phase Angle Fired Models
The SCR19P-H and SCR39P-H SCR phase-angle fired power controllers turn on each SCR for a controlled portion of a half-cycle of the line voltage. The effective line voltage is determined by the portion of the line voltage delivered, which is proportional to the input control signal. Additionally, the voltage is regulated as the line voltage changes.

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