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PDFs and Datasheets 210 Series Datasheet

210 Series Datasheet

Dividohm® Vitreous Enamel Adjustable Power 

Res 210 product image

 

Features

  • Terminals suitable for soldering or bolt connection.
  • Adjustable lug supplied
  • High wattage applications
  • All-welded construction
  • Rugged lead free vitreous enamel coating.
  • Flame resistant coating
  • Additional adjustable lugs available
  • RoHS compliant product available. Add “E” suffix to part number to specify

 

Choose Ohmite’s 210 Type adjustable resistors for applications requiring settings at different resistance values. These wirewound resistors are equipped with an adjustable lug, making them ideal for adjusting circuits, obtaining odd resistance values and setting equip ment to meet various line voltages. 210 Type resistors feature a hollow core to permit secure fastening with spring-type clips or thru bolts with washers. They also offer the durability of lead free vitreous enamel coating and all-welded construction. Mounting brackets not included with resistors

Series Specifications

Wattage: 12

Ohms: 1.0-10K

Core Code: D

Voltage: 565

Standard Terminal: 57

Wattage: 25

Ohms: 1.0-25K

Core Code: K

Voltage: 625

Standard Terminal: 40

Wattage: 50

Ohms: 1.0-100K

Core Code: K

Voltage: 1625

Standard Terminal: 40

Wattage: 75

Ohms: 1.0-100K

Core Code: K

Voltage: 2625

Standard Terminal: 40

Wattage: 100

Ohms: 1.0-100K

Core Code: M

Voltage: 2845

Standard Terminal: 40

Wattage: 175

Ohms: 1.0-100K

Core Code: P

Voltage: 3595

Standard Terminal: 46

Wattage: 225

Ohms: 1.0-100K

Core Code: P

Voltage: 4595

Standard Terminal: 46

Wattage: 500

Ohms: 1.5-15K

Core Code: S

Voltage: 4970

Standard Terminal: 45

Wattage: 1000

Ohms: 3.0-27.7K

Core Code: S

Voltage: 8900

Standard Terminal: 45

 

Other sizes available; contact Ohmite. Also available in low cost Centohm or Silicone coating; contact Ohmite.

Characteristics

10% to 90% of full value. Wattage is proportional to this adjusted resistance value.

ead free vitreous enamel. Large models (500 watts and up) are supplied in Silicone Ceramic. Also available in low-cost Centohm coating; Consult factory.

Tubular ceramic.

Solder coated radial lug. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu

Nickel plated steel. (Screwdriver type adjustable lug supplied standard. Other types, including silver contact units, available.)

Linearly from 100% @ +25°C to 0% @ +350°C.

±10% (K)

Based on 25°C free air rating. The stated wattage rating applies only when the entire resistance is in the circuit. Setting the lug at an intermediate point reduces the wattage rating by approximately the same proportion. Example: If the lug is set at half resistance, the wattage is reduced by approx. one-half.

10 times rated wattage for 5 seconds.

±260 ppm/°C

1000 VAC: 12 to 100 watt rating. 3000 VAC: 175 and 225 watt rat-ing (measured from terminal to mounting bracket)

To calculate, use the formula √P/R.

see https://www.ohmite.com/assets/docs/hardware_resistor.pdf

 

Power limitations for high resistance values: When resistance exceeds the resistance values listed below, derate the Power Rating by 25% to improve reliability:

Power rating        Resistance Value

12W                           4,500Ω  

25W                           9,000Ω

50W                           20,000Ω

75W                           35,000Ω

100W                         50,000Ω

No power  derating necessary for ratings  higher than  100W.

Dimensions

(in. / mm) 

Wattage: 12

L: 1.75 / 44.4

D: 0.313 / 7.94

C: 0.188 / 4.76

Core Code*: D

Std. Term.**: 57

Wattage: 25

L: 2.0 / 50.8

D: 0.562 / 14.3

C: 0.313 / 7.94

Core Code*: K

Std. Term.**: 40

Wattage: 50

L: 4.0 / 101.6

D: 0.562 / 14.3

C: 0.313 / 7.94

Core Code*: K

Std. Term.**: 40

Wattage: 75

L: 6.0 / 152.4

D: 0.562 / 14.3

C: 0.313 / 7.94

Core Code*: K

Std. Term.**: 40

Wattage: 100

L: 6.5 / 165.1

D: 0.750 / 19.1

C: 0.50 / 12.7

Core Code*: M

Std. Term.**: 40

Wattage: 175

L: 8.5 / 215.9

D: 1.125 / 28.6

C: 0.75 / 19.1

Core Code*: P

Std. Term.**: 46

Wattage: 225

L: 10.5 / 266.7

D: 1.125 / 28.6

C: 0.75 / 19.1

Core Code*: P

Std. Term.**: 46

Wattage: 500

L: 12.0 / 304.8

D: 2.50 / 63.5

C: 1.75 / 44.5

Core Code*: S

Std. Term.**: 45

Wattage: 1000

L: 20.0 / 508.0

D: 2.50 / 63.5

C: 1.75 / 44.5

Core Code*: S

Std. Term.**: 45

 

* https://www.ohmite.com/assets/docs/200-210-270-custom.pdf
** https://www.ohmite.com/assets/docs/terminals.pdf

Res 210 Dimensions

Ordering Information

Res 210 Order Info

 

Made-to-order Parts 

Res 210 Parts Order Info

 

Standard Values

Part number chart.

See 270 series custom core and terminal info

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