Heater/Load
Type
|
Heater/Load
Characteristics
|
Control Type
|
Typical
Applications
|
Model
Number
|
Constant Resistance
Elements. Immersion heaters.
|
Slow Response |
On/Off
Zero Voltage
Switched |
Large
tank heating and mechanical relay replacement. |
A1Z
A3Z
A6Z
R1
CZ |
| Medium
wave infrared, ceramic, cartridge, duct, strip, and band heaters.
Platens. |
Faster
response, Constant resistance heaters only. |
Zero
Voltage Switched |
Thermoforming,
textiles, industrial furnaces and ovens, extruders, kilns, chemical
process heating, fast water heat. |
A1Z
A3Z
CZ
D1P |
| Open
coil/wire heaters. Medium wave IR quartz. IR panels. |
Fastest,
most precise response. |
Phase Angle Fired |
Paper
and pulp drying, packaging machines, pharmaceutical processes, infrared
ovens & dryers. |
A1P
C1P
A3P
D1P
2CP-8CP |
Silicon Carbide
heaters. |
Load changes in resistance with age.
High temperature elements. |
Phase Angle Fired
with Current Limit Option |
High
temperature ovens and furnaces, glass, ceramics and high temperature
alloys. |
A1P-CL
A3P-CL |
| Tungsten
(T-3) lamps and heaters. Short wave IR elements. Molybdenum heaters. |
High
inrush currents
High hot: cold resistance ration
Tungsten 14:1
Molybdenum 20:1
Graphite: 20:1 |
Phase Angle Fired
with Soft Start option |
High
speed paper and ink dryers, high temperature IR heating, high
temperature materials processing. |
A1P-Sxx
A3P-Sxx
C1P-S
2CP-S-8CP-S |
| Transformer
coupled loads. Primary driving. Inductive heater loads. |
Inductive
loads. |
Phase Angle Fired with Soft Start
option. Current limit option. |
Used
with transformer-coupled to drive low voltage elements. |
B1P
B2P
B3P |
