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Control Panel

The Series 7550 is a family of self contained control panels that provide a complete control system designed for accurate and safe control of our inline air heaters.
These control panels contain a proprietary microprocessor based Process Controller and solid state relay, which uses rapid response technology to provide accurate air temperature control.
The control system also has an independent high limit controller that de-energizes the built-in safety contactor if an unexpected condition attempts to overheat the heating element.

Watch a video demonstrating proper wiring of this product

Control Panel Wiring Demonstration

Watch a video showing how to wire a Heat Torch to this product

How to Wire a Heat Torch to a 7550 Series...

Watch a video demonstrating the Contol Panel's auto tune feature

Process Controller Auto Tune Demonstration

Build Your Own Temperature Control Panel

The builder below will allow you to select options for a Control Panel. If you are uncertain if a Control Panel is the right solution for your needs, please learn about our other product offerings on our Standard Air Heaters page.

Watch a video demonstration of this tool

Builder Your Own Heater Tool Demonstration

Amps

--
20
40
80 (40x2)
90 (45x2)

Panel No.

--
7550-A20
7550-A40
7550-B20
7550-B40
7550-C20
7550-C40
7550-D20
7550-D40
7550-E20
7550-E20-899 (TAT)
7550-E40
7550-E40-2
7550-E45-2
7550-G40

Voltage

--
277
380
480
120/208/240
208/240

Phase

--
single
three

Wattage

--
5.5
9.6
11
16.6
19.2
26.2
33.2
66.4
74.7
7.1 / 8.3
14.3 / 16.6
2.4 / 4.16 / 4.8
4.8 / 8.32 / 9.6

Hertz

--
60
50 / 60

Part Number: ? - ? - ? - ? - ? - ?

Control Panel - General Product Specifications

Model No.	Line Voltage	Current	Phase
7550-A20	120/208/240	20 AMPS	1
7550-A40	120/208/240	40 AMPS	1
7550-C20	277	20 AMPS	1
7550-C40	277	40 AMPS	1
7550-D20	480	20 AMPS	1
7550-D40	480	40 AMPS	1
7550-B20	208/240	20 AMPS	3
7550-B40	208/240	40 AMPS	3
7550-E20	480	20 AMPS	3
7550-E40	480	40 AMPS	3

Recommended Fusing

These ultra fast blow fuses are recommended as protection for the power circuits within the controller. The power circuits contain Solid State Relays (SSRs) that are sensitive to any overcurrent or short circuit conditions. Standard fusing will not open quickly enough to protect the SSRs.

If these recommended fuses are not used and the heater power is shorted internally or to ground, it is probable that the SSRs will fail in a permanently closed state. After appropriate repairs, and upon restarting the controller, the result will be power continuously applied to the heater causing a runaway heat output condition if the SSRs have not been replaced. Using the recommended fusing should prevent this.

These fuses must be appropriately installed in series with the incoming power to the controller. Contact the fuse supplier or their distributor for installation details.

Contact Information

Edison
1-510-601-4051
www.EdisonFuseGear.com

Ferraz-Shamut
1-800-739-9145
1-918-665-6888
www.ferrazfuses.com

Controller Part Number	# Fuses Required	SSR P/N	Edison Semiconductor Fusing	Ferraz Semiconductor Fusing
7550-E45-2	6	D4850		A50QS50
7550-E40-2	6	D4850		A50QS50
7550-E40	3	D4850		A50QS50
7550-E20	3	D4825	E50SF25
7550-B40	2	D2450	E25S50	A30QS50
7550-B20	2	D2425		A30QS25
7550-A40	2	D2450	E25S50	A30QS50
7550-A20	2	D2425		A30QS25

Control Panel - Dimensioned Drawing

What Now?

Feel free to contact us and tell us about your heating needs.

Make use of our tools and resources aimed at helping you make an informed decision.

Watch a video demonstrating how to properly wire your Control Panel

Calculate the electrical power, flow rate or temperature requirement as follows:

SCFM = airflow in standard cubic feet per minute

ΔT = temperature rise in degrees F from the inlet to the exhaust

Watts = SCFM x ΔT/3

Fill in two values to determine the third.

Single Phase Unit

Line Current= Wattage / Voltage

Three Phase Unit

Line Current = Wattage / (Voltage * √3)

°F = ( ( ( °C * 9) / 5 ) + 32 )

°C = ( ( ( °F - 32) * 5 ) / 9 )