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SCR Power Controllers for Electrical Resistance Heaters

SCR19 and SCR39 Series   
SCR Power Controllers for Electrical Resistance Heaters
SCR19 and SCR39 Series:SCR Power Controllers for Electrical Resistance Heaters
$300.00  SCR19Z-24-040
2 year warranty NEW! OmegaCare
Zero Crossing or Phase Angle Fired
Single or Three 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 Control Signal Input

View related products - Temperature and Process Controllers and Power Switching Devices

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The SCR19 Series Power Controllers are designed to proportion electric power to resistive loads only, such as ovens, furnaces, heat sealers, etc. (NOTE: They are not designed to drive transformers or any inductive load.) The controllers consist of power semi-conductors (SCRs), properly-sized heat sinks, trigger circuitry, and fuses supplied on panels for surface mounting. The power controller accepts a 4 to 20 mA dc output from a temperature controller or can be supplied with manual option using a remote potentiometer.

The SCR19 Series controllers offers two methods of proportional control – Zero-voltage-switched and Phase-angled-fired. With the Zero-voltage-switching mode, the controller switches on complete cycles of the ac supply voltage. The trigger circuit is designed to turn on the SCRs as close as possible to the point where the AC sine wave crosses through zero. In effect, the line voltage is turned on and off and applied to the heaters in whole cycles. With an input of 4 to 20 mA, the output will be off below 4 mA and full on at 20 mA. Proportioning action is obtained by varying the number of cycles on to the number of cycles off. The output will vary from one cycle on and nine cycles off at low input, to all cycles on at maximum input. This output is integrated by the heaters which produce a smoothly proportioning heat output that varies directly with the input signal. With the Phase-angle-fired mode, the power to the load is controlled by governing the point of turn on (firing) of each half cycle of the full AC sine wave.

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 Part Number   Availability   Price   Description    Qty.
Click to expand/minimize a list of what others bought with the SCR19Z-12-040  SCR19Z-12-040 In Stock   $308.00    SCR, Zero-Voltage-Switching, 120V, 40A  
Click to expand/minimize a list of what others bought with the SCR19Z-24-040  SCR19Z-24-040 1 Week   $300.00    SCR, Zero-Voltage-Switching, 240V, 40A  
    SCR19Z-48-040 1 Week   $315.00    SCR, Zero-Voltage-Switching, 480V, 40A  
    SCR19Z-24-060 In Stock   $310.00    SCR, Zero-Voltage-Switching, 240V, 60A  
    SCR39Z-24-060 4 Weeks   $595.00    SCR, 3-phase, Zero-Voltage-Switching, 240V, 60A  
    SCR39Z-48-060 In Stock   $630.00    SCR, 3-phase, Zero-Voltage-Switching, 480V, 60A  
    SCR19P-24-040-S15 4 Weeks   $370.00    SCR, Phase-Angle-Switching, 240V, 40A, 15 sec soft start circuit  
    SCR19P-24-080-S9 In Stock   $396.00    SCR, Phase-Angle-Switching, 240V, 80A, 9 sec soft start circuit  
Click to expand/minimize a list of what others bought with the SCR-210A015U01  SCR-210A015U01 4 Weeks   $66.00    Replacement Fuse, 40 A  
    SCR-210A012U01 4 Weeks   $86.00    Replacement Fuse, 60 A  
    SCR-210A014U01 4 Weeks   $80.00    Replacement Fuse, 80 A  
    SCR19Z-M 4 Weeks   $100.00    Manual remote pot for 120V SCR19/39 models  
    SCR19Z-M-220 3 Weeks   $100.00    Manual remote pot for 240V SCR19/39 models  
    SCR19Z-M-480 3 Weeks   $100.00    Manual remote pot for 480V SCR19/39 models  

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 Note: Comes with complete operator’s manual
 Ordering Example: (1) SCR19Z-24-040 SCR, Zero-Voltage-Switching, 240V, 40A, $300.00
 Part Number Builder
(1) (2) (3) (4) (5)   

Option Descriptions
(1) Single or 3 Phase
1 for Single Phase
3 for 3 Phase
(2) Method
Z for Zero-Voltage Switching
P for Phase-Angle Firing
(3) Voltage
-02 for 24 Vac for single phase only
-12 for 120 Vac for single phase only
-20 for 208 Vac for phase angle firing
-24 for 240 Vac
-48 for 480 Vac
(4) Current
-040 for 40 Amps
-060 for 60 Amps
-080 for 80 Amps
(5) Phase-Angle Firing Items
for Zero-Voltage Switching leave field blank
-S9 for the STANDARD Soft start 9 seconds
-S15 for Soft start 15 seconds
-S30 for Soft start 30 seconds
-S60 for Soft start 60 seconds
-S120 for Soft start 120 seconds
-V for Voltage limit
 NOTE: All combinations may not be valid, check spec sheet for valid part numbers.

Keywords:SCR Power Controllers for Electrically Heated Processes, shear strain strain gage installation

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