32

L

D

C

Fea tures

• Terminals suitable for soldering

or bolt connection.

• Adjustable lug supplied.

• High wattage applications.

• All-welded construction.

• Rugged lead free vitreous enam-

el coating.

• Flame resistant coating.

• Thumb-screw-adjustable lug

available (Part No. 2160) for

1.125” core resistors.

• RoHS compliant product avail-

able. Add “E” suffix to part num-

ber to specify.

Dimensions (in. / mm)

Core

standard

series

Wattage

Ohms

L

D

C

Code

Voltage

terminal

D12

12

1.0-10K

1.75 / 44.4

0.313 / 7.94

0.188 / 4.76

D

565

57

D25

25

1.0-25K

2.0 / 50.8

0.562 / 14.3

0.313 / 7.94

K

625

40

D50

50

1.0-100K

4.0 / 101.6

0.562 / 14.3

0.313 / 7.94

K

1625

40

D75

75

1.0-100K

6.0 / 152.4

0.562 / 14.3

0.313 / 7.94

K

2625

40

D100

100

1.0-100K

6.5 / 165.1

0.750 / 19.1

0.50 / 12.7

M

2845

40

D175

175

1.0-100K

8.5 / 215.9

1.125 / 28.6

0.75 / 19.1

P

3595

46

D225

225

1.0-100K

10.5 / 266.7

1.125 / 28.6

0.75 / 19.1

P

4595

46

D500

500

1.5-15K

12.0 / 304.8

2.50 / 63.5

1.75 / 44.5

S

4970

45

D1000

1000

3.0-27.7K

20.0 / 508.0

2.50 / 63.5

1.75 / 44.5

S

8900

45

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

Terminals: Solder coated radial

lug. RoHS solder composition is

96% Sn, 3.5% Ag, 0.5% Cu

Adjustable terminal: Nickel

plated steel. (Screwdriver type

adjustable lug supplied standard.

Other types, including silver con-

tact units, available.)

Derating: Linearly from 100% @

+25°C to 0% @ +350°C.

Electrical

Tolerance: ±10% (K)

Power rating: Based on 25°C

free air rating. The stated watt-

age rating applies only when the

entire resistance is in the circuit.

Setting the lug at an intermediate

point reduces the wattage rat-

ing by approximately the same

proportion. Example: If the lug is

set at half resistance, the watt-

age is reduced by approximately

one-half.

Overload: 10 times rated wattage

for 5 seconds.

Temperature coefficient:

±260 ppm/°C

Dielectric withstanding voltage:

1000 VAC: 12 to 100 watt rating.

3000 VAC: 175 and 225 watt rat-

ing (measured from terminal to

mounting bracket)

To calculate max. amps: use the

formula

√P/R.

Power limitations for high resis-

tance values: When resistance

exceeds the resistance values listed

below, derate the Power Rating by

25% to improve reliability:

Power

Resistance

rating

value

12W

4,500

Ω

25W

9,000

Ω

50W

20,000

Ω

75W

35,000

Ω

100W

50,000

Ω

No power

derating

necessary for

ratings higher

than 100W.

See page 36

for mounting hardware

Choose Ohmite’s 210 Type adjustable resistors for applications

requiring settings at different resistance values. These wire-

wound resistors are equipped with an adjustable lug, making

them ideal for adjusting circuits, obtaining odd resistance values

and setting equipment 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.

210 Series

adjustable Power

St andard p ar t number S for 210 Serie S



= Standard values; check availability using the worldwide inventory

search at www.ohmite.com

















































































































































































































































































































































Wattage

Wattage

Wattage

Part No.

Prefix 

Suffix

Part No.

Prefix 

Suffix

Part No.

Prefix 

Suffix

m ade-to-order

See website for custom

core and terminal info

ordering inf o

��������

Tolerance

J= 5%

K= 10%

Ohms

1R0 = 1

Ω

250 = 250

Ω

1K0 = 1,000

Ω

25K = 25,000

Ω

25K5 = 25,500

Ω

RoHS Compliant

Series Wattage

Coating

Blank =Vitreous

C= Centohm

S= Silicone

50K

Ω and 100KΩ resistance values involve very fine resistance wire and should not be

used in critical applications without burn-in and/or thermal cycling.

� � � � � � � � � � � � � �

Tolerance

J = 5%

K = 10%

Core Diameter

See “Core and

Terminal Selection”

Ohms

R500 = 0.500

Ω

1R00 = 1

Ω

250R = 250

Ω

1K00 = 1,000

Ω

25K0 = 25,000

Ω

25K5 = 25,500

Ω

RoHS Compliant

Coating

210 = Vitreous

410 = Silicone Ceramic

610 = Centohm

Wattage

Terminal Type

See “Resistor Terminals

for Tubular Cores”

sP e C i F i C a ti ON s

Adjustability is 10% to 90% of full

value. Wattage is proportional to

this adjusted resistance value.

Material

Coating: Lead free vitreous

enamel.

Core: Tubular ceramic.