Omega Products SCR19P-H-12-125-S120 User Manual
SCR Power Controllers
For Electrical Resistance Heaters
125, 200, 250 Amp
SCR19-H and
SCR39-H Series
Starts at
$
1048
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
2
I
T Fusing
Optically Isolated
4 to 20 mA Control
Signal Input
Fan Cooled
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
(radio frequency interference)
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.
Dimensions: mm (in)
Model No. Height Width Depth
SCR19Z-H 222.25 (8.750) 135.12 (5.320) 370.84 (14.6)
SCR19P-H 222.25 (8.750) 135.12 (5.320) 370.84 (14.6)
SCR39Z-H 222.25 (8.750) 287.02 (11.3) 370.84 (14.6)
SCR39P-H 222.25 (8.750) 394.46 (15.530) 370.84 (14.6)
Note: When fuses are added to unit, add 83 mm (3.3") to height.
SCR39Z-H-48-250, $1939, shown smaller than actual size.
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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.
P
Extended Warranty
Program
SM
Specifications
Supply Voltage: 120 to 600 Vac
Frequency: 50 to 60 Hz
Current Rating: 125 to 250 A
Input Control Signal Isolation:
2500 Vac
Transient Voltage Protection:
Inherent built-in immunity
Ambient Temperature: 0 to 50°C
(32 to 122°F)
Load: Resistive
SCR39Z-H: 1-phase, 2-leg
control for 3-wire delta, 3-phase
ungrounded wye
SCR19Z-H: 1-phase, 1-leg control
SCR39P-H: 3-phase, 3-leg half
control for 3-wire delta or 3-phase
ungrounded wye
SCR19P-H: 1-phase, 1-leg control
Diagnostic Indicators: Shorted or
open SCR
Cooling: Fan cooled, requires 120 Vac
control voltage
Single-Phase Load
Current (Amps) Equation
Total Amps = Total Watts (Load)
(**) Soft Start or Voltage Limit
Code Price Description
S9 $57 Soft start 9 seconds
S15 57 Soft start 15 seconds
(*) Specify Line Voltage
Code Description
12 120 Vac
20 208 Vac
24 240 Vac
48 480 Vac
S30 57 Soft start 30 seconds
S60 57 Soft start 60 seconds
S120 57 Soft start 120 seconds
V 57 Voltage limit
X0No soft start or
voltage limit
MOST POPULAR
Phase-Angle Firing Models
MODELS HIGHLIGHTED!
To Order (Specify Model Number)
Model No. Price Current Load (A) Weight kg (lb)
Single-Phase Models
SCR19P-H-(*)-125-(**) $1048 125 6.1 (13.5)
SCR19P-H-(*)-200-(**) 1127 200 6.4 (14.0)
SCR19P-H-(*)-250-(**) 1185 250 6.4 (14.0)
3-Phase Models
SCR39P-H-(*)-125-(**) $2182 125 16.1 (35.5)
SCR39P-H-(*)-200-(**) 2279 200 16.8 (37.0)
SCR39P-H-(*)-250-(**) 2477 250 16.8 (37.0)
All phase-angle models come complete with 1 fuse per SCR line controlled, and operator’s
manual.
Ordering Examples: SCR19P-H-24-125-S30, 125 A, 240V single-phase-angle model with a
30 second soft start option, $1048 + 57 = $1105. OCW-3, OMEGACARESMextends standard
2-year warranty to a total of 5 years ($276), $1105 + 276 = $1381.
SCR39P-H-48-200-S9, 200 A, 480V three-phase-angle model with a 9 second soft start option,
$2279 + 57 = $2336.
Volts (Line Voltage)
Three-Phase Load
Current (Amps) Equation
Total Amps = Total Watts (Load)
1.73 x Volts (Line Voltage)
Also See
SCR19/SCR39
Series Visit
omega.com/scr19
OMEGACARESMextended warranty program
is available for models shown on this page.
Ask your sales representative for full details
when placing an order. OMEGACARE
covers parts, labor and equivalent loaners.
Zero-Voltage Switching Models
Model No. Price Current Load (A) Weight kg (lb)
120 to 480V, Single-Phase Models
SCR19Z-H-48-125 $1100 125 6.1 (13.5)
SCR19Z-H-48-200 1184 200 6.4 (14.0)
SCR19Z-H-48-250 1243 250 6.4 (14.0)
120 to 480V, 3-Phase Models
SCR39Z-H-48-125 $1690 125 12.5 (27.0)
SCR39Z-H-48-200 1815 200 12.5 (27.5)
SCR39Z-H-48-250 1939 250 12.5 (27.5)
All zero-voltage models come complete with 1 fuse per SCR line controlled, and operator’s
manual.
Ordering Examples: SCR19Z-H-48-250, 250 A, 120-480V, single-phase zero-voltage
model, $1243.
SCR39Z-48-125, 125 A , 120-480V, three- phase, zero-voltage model, $1690. OCW-1,
OMEGACARE
$1690 + 150 = $1840.
SM
extends standard 2-year warranty to a total of 3 years ($150),
Replacement Fuses for SCR19-H, SCR39-H Series (120 to 480 Vac)
Model No. Price Current (A)
SCR-210A044U01 $198 125
SM
SCR-210A046U01 174 200
SCR-210A045U01 253 250
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