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  1. Home
  2. Industrial Heaters
  3. Strip Heaters
  4. A Series Ring Heaters
A Series Ring Heaters

A Series Ring Heaters

C$116.00

Item# A-20-33/120

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 C$116.00
10-24 C$110.20
25-49 C$107.88
50-99 C$103.24
100-199 C$100.92
200+ C$98.60

In stock

Lead Time ( If not in Stock): 6 weeks
Add to Project List
A Series Ring Heaters A-20-33/120 A-20-33/120
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  • U.L. Component Recognized
  • CSA Certified
  • For Flat Surfaces
  • Rugged, Heavy Duty
  • APPLICATION
    •Tank Bottoms
    • Glue and Lead Melting Pots
    • Dies
    • Platens
    • Valve Flanges
    • Incubators
    • Hotplates
    • Vulcanizers
Data Sheet (PDF)

Product info

Form Factor
Ring
Power
300 W
Supply Voltage
120 Vac
Power Density
12 W/in2
Sheath Material
Chrome Steel
Heating Elements
3
Strip Dimension
3 31/32" OD
Max. Temperature
650°C (1200°F)
Termination
3 Terminals

Product Specs

  • Finned No
  • Maximum Operating Temperature 650°C (1200°F)
Product Details

FEATURES
Single-heat rings have two terminals for single wattage, ON-OFF switch or thermostat.

Three-heat rings have three terminals which split the total rated wattage into two equal circuits. By using a three-heat switch 1/4, 1/2 or full wattage may be obtained. Use the two equal circuits in parallel to obtain full wattage. Center terminal is common.

Refractory-insulated construction exclusively. By far the most rugged and best for long, dependable service.

Easy installation. The circular shape and the use of OMEGALUX™ utility clamps simplifies the use of ring heaters. Nesting rings to pack heat in a small area can be done by installing rings within each other. For examples: A-651, A-802 and A-903 provide 4050 watts within a 10 31/32" circle.

Utility clamps. Usually used in sets of 4 to clamp ring elements on flat surfaces. 5/16" flat-head machine screws are normally used, with head brazed or welded to work surface.

To order utility clamps, ask for Model No. 6018 Clamp.

SPECIFICATION
Power: 120 or 240V
Wattage: 125 to 1800 watts
Sheath Material: Chrome Steel
Max. Sheath Temperature: 1200°F



Single-Heat Element
Chrome Steel Sheath
Model No.		 Three-Heat Element
Chrome Steel Sheath
Model No.		 Dimensions-Inch (cm)
Watts W/In2† A B C
A-203/*A-20-33/*300123 31/32 (10)1 11/16 (4)5/16 (8)
A-204/*A-20-34/*400153 31/32 (10)1 11/16 (4)5/16 (8)
A-205/*A-20-35/*500193 31/32 (10)1 11/16 (4)5/16 (8)
A-304/*A-30-34/*450144 5/8 (12)2 1/4 (6)5/16 (8)
A-305/*A-30-35/*500154 5/8 (12)2 1/4 (6)5/16 (8)
A-306/*A-30-36/*550174 5/8 (12)2 1/4 (6)5/16 (8)
A-405/*A-40-35/*500125 7/16 (14)3 (8)5/16 (8)
A-406/*A-40-36/*660165 7/16 (14)3 (8)5/16 (8)
A-407/*A-40-37/*750185 7/16 (14)3 (8)5/16 (8)
A-504/*A-50-34/*400106 1/16 (15)4 5/16 (11)5/16 (8)
A-505/*A-50-35/*450116 1/16 (15)4 5/16 (11)5/16 (8)
A-506/*A-50-36/*500136 1/16 (15)4 5/16 (11)5/16 (8)
A-656/*A-65-36/*660126 1/8 (16)3 (9)5/16 (8)
A-657/*A-65-37/*750146 1/8 (16)3 (9)5/16 (8)
A-651/*A-65-31/*1000196 1/8 (16)3 (9)5/16 (8)
A-605/*A-60-35/*500116 19/32 (17)4 1/2 (11)5/16 (8)
A-606/*A-60-36/*660146 19/32 (17)4 1/2 (11)5/16 (8)
A-607/*A-60-37/*750166 19/32 (17)4 1/2 (11)5/16 (8)
A-705/*A-70-35/*55097 7/16 (19)5 5/16 (13)5/16 (8)
A-706/*A-70-36/*660117 7/16 (19)5 5/16 (13)5/16 (8)
A-707/*A-70-37/*750137 7/16 (19)5 5/16 (13)5/16 (8)
A-808/*A-80-38/*880148 3/8 (21)6 3/16 (16)5/16 (8)
A-801/*A-80-31/*1050168 3/8 (21)6 3/16 (16)5/16 (8)
A-802/*A-80-32/*1250198 3/8 (21)6 3/16 (16)5/16 (8)
A-901/*A-90-31/*10001010 31/32 (28)8 1/2 (22)5/16 (8)
A-902/*A-90-32/*15001610 31/32 (28)8 1/2 (22)5/16 (8)
A-903/*A-90-33/*18001910 31/32 (28)8 1/2 (22)5/16 (8)
/* Designate voltage. Insert 120 for 120 Vac or 240 for 240 Vac. Lower wattages down to
125 watts and smaller outside diameters are also available. Contact OMEGALUX.

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