TEMPCO Electric Heater Corporation
Temperature Control

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SCR Power Control "B" Series  ― Single Phase 60 through 1200 Amp

 

Specifications
Command Signals: 4-20mA; 0-5VDC; 0-10VDC; potentiometer
Control Mode: Distributive Zero Cross; Phase Angle Firing
load current
Zero Cross or Phase Angle Fire:  60, 90, 120, 180, 225, 350, 500, 650, 500, 800, 1000 or 1200 Amps
Line Voltage: 120, 240, 480, or 575 VAC; +10% -20% 50/60 Hz
Zero and Span: Factory pre-set. User adjustable over a range of 20% of span.
Transient Voltage and dv/dt: 200 volts/microsecond minimum. Uses a dv/dt snubber and a metal oxide varistor (MOV).
control range
Zero Cross: 0 to 99.5% of line voltage
Phase Angle Firing: 0 to 97% of line voltage
linearity
Zero Cross: Linear with respect to the command signal
Phase Angle Firing: RMS load voltage is linear within 2% of the command signal.
 temperature
 Operating: +32 to 122°F (0 to +50°C)
 Storage: 14 to +158°F (-10 to +70°C)
Cooling: 60 amp convection, all others fan cooled
Mounting: Panel mount with heat sink fins vertical
 dimensions
60 through 225 Amp units:
16.25"H×9.5"W×9.25"D
350 through 500 Amp units:
14.75"H×20.125"W×8.5"D
600 amp units:
16.75"H×23"W×11.5"D
800 through 1200 amp units:
14.75"L×20.125"W×8.5"D
 

weight
60 through 225 Amp units: 22 lbs
350 through 500 Amp units: 24 lbs
600 amp units: 47 lbs
800 through 1200 amp units: 71 lbs
"B" Series-- Single Phase 60 through 1200 Amp
The "B" Series SCR Power Controls are a compact and economical power control solution for industrial applications that require high reliability and long life. The fast solid state switching provides superior performance over relays, contactors and other slower cycling controllers by reducing temperature variations associated with the longer on-off cycles of those devices. The result is a more precise control of the heating process and extended heater life.

Design Features
Zero Cross Units
 Conservative Thermal Design
 Compact Size
 Voltage Squared Linearity
 Line Voltage Protection
  Includes Semiconductor I2T Fuses
 Diagnostic Indicators
 Multi-turn Zero & Span Adjustments
 UL, cUL , Ce Compliant
 
Common Configurations
240 VAC, 1-Phase; 4-20 mA input:
Includes Over Temperature Thermostat ― N.O.
 for controls 90 Amp and over.
Load
 Current		 Part Number
Zero Cross		 Part Number
 Phase Angle
60 Amp SRS03101 SRS04101
90 Amp SRS03102 SRS04102
120 Amp SRS03103 SRS04103
Common Configurations
240 VAC, 1-Phase; 4-20 mA input:
Includes Over Temperature Thermostat ― N.O.
 for controls 90 Amp and over.
Load
 Current		 Part Number
Zero Cross		 Part Number
 Phase Angle
180 Amp SRS03104 SRS04104
225 Amp SRS03105 SRS04105
350 Amp SRS03106 SRS04106

Potentiometer Kit (ordered separately): 5KW potentiometer and knob Part Number: SRS99001

How To Order