Electric Duct Heater Scr Control

Price electric coils are factory mounted etl listed to meet electrical safety standards and comply with dual designation csa 236 ul 1995.

Electric duct heater scr control.

Indeeco s attention to detail and rigorous testing give worldwide customers premium products that they receive quickly and at a fair price. Automatic reset thermal safety switch for primary over temperature protection. This gives smooth infinitely variable application of power to the heaters. Thermolec electric duct heaters are designed for use in all forced air commercial and industrial hvac systems.

Since the scr is solid state it. The scr control can deliver electrical power to heaters in several ways. Scr power controllers are designed for an accurate and cost effective way to modulate electric heat. Fuses to protect each circuit in any heater drawing more than 48 amps.

Upon restoration of power the step sequence resumes. Scr pictured solid state relays are used to provide continuous modulation. Power and control terminal boards. Our heaters and controls range from standard duct heaters to the most sophisticated custom designed comprehensive systems.

Viconics r820 scr power controller has been designed for safe and reliable control of electric heat loads. Useful for electric reheat and supplemental electric duct heaters. This duct heater features. These controls proportionally turn on a percentage of each power line half cycle.

Manual reset thermal safety switch for secondary over temperature protection. An electronic step controller provides electronic sequencing control of an electric duct heater up to 12 steps. When interruption of power occurs all stages cycle off. Capacity and stages are dependent on voltage phase and heater dimensions.

Standalone coils supplied as duct heaters are certified in compliance with ul 1996. A transformer with any overcurrent protection required by ul or the nec to supply the internal control circuit of 120 volts per heater with a step controller for vernier control and 24 volts for all other heaters with scr control. Their applications vary from a partial or auxiliary nature to being the major or principal heat source in a building. A silicon controlled rectifier scr is a solid state switching device which can provide fast infinitely variable proportional control of electric power.

Scr power control in depth. Phase angle fired zero voltage switched and on off control.