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.)
F e a t u r e s
• Terminals suitable for soldering
or bolt connection.
210 Series
adjꢅꢁꢃꢄblꢀ Powꢀꢂ
®
• 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.
Dividohm Viꢃꢂꢀoꢅꢁ enꢄmꢀl
Derating: Linearly from 100% @
+25°C to 0% @ +350°C.
Electrical
D
C
L
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.
• RoHS compliant product avail-
able. Add “E” suffix to part num-
ber to specify.
Dimꢀnꢁionꢁ (in. / mm)
Coꢂꢀ
sꢃꢄndꢄꢂd
sꢀꢂiꢀꢁ Wꢄꢃꢃꢄgꢀ
Ohmꢁ
1.0-10K
1.0-25K
L
D
C
Codꢀ Volꢃꢄgꢀ tꢀꢂminꢄl
D12
12
25
1.75 / 44.4
2.0 / 50.8
4.0 / 101.6
6.0 / 152.4
6.5 / 165.1
8.5 / 215.9
10.5 / 266.7
12.0 / 304.8
20.0 / 508.0
0.313 / 7.94
0.562 / 14.3
0.562 / 14.3
0.562 / 14.3
0.750 / 19.1
1.125 / 28.6
1.125 / 28.6
2.50 / 63.5
2.50 / 63.5
0.188 / 4.76
0.313 / 7.94
0.313 / 7.94
0.313 / 7.94
0.50 / 12.7
0.75 / 19.1
0.75 / 19.1
1.75 / 44.5
1.75 / 44.5
D
K
K
K
M
P
P
S
S
565
625
57
40
40
40
40
46
46
45
45
D25
D50
D75
D100
D175
D225
D500
50
75
100
175
225
500
1.0-100K
1.0-100K
1.0-100K
1.0-100K
1.0-100K
1.5-15K
1625
2625
2845
3595
4595
4970
8900
D1000 1000
3.0-27.7K
Other sizes available; contact Ohmite. Also available in low cost Centohm or Silicone coating; contact Ohmite.
Choose Ohmite’s 210 Type adjustable resistors for applications
s P e C ꢆ F ꢆ C a t ꢆ O N s
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.
Adjustability is 10% to 90% of full
value. Wattage is proportional to
this adjusted resistance value.
Material
Coating: Lead free vitreous
enamel.
See page 36
for mounting hardware
Core: Tubular ceramic.
Power limitations for high resis-
tance values: When resistance
exceeds the resistance values listed
below, derate the Power Rating by
25% to improve reliability:
o r d e r i n g i n f o
m a d e - t o - o r d e r
Coating
Core Diameter Terminal Type
See “Core and See “Resistor Terminals
Terminal Selection” for Tubular Cores”
Blank = Vitreous
C = Centohm
S = Silicone
RoHS Compliant
RoHS Compliant
Power Resistance
No power
derating
necessary for
ratings higher
than 100W.
� ꢀ ꢁ ꢂ ꢁ ꢃ ꢄ ꢁ ꢂ ꢅ ꢁ ꢁ ꢆ ꢇ
� ꢀ ꢁ ꢂ ꢃ ꢄ ꢄ ꢅ
rating
12W
value
Tolerance
5%
K = 10%
Coating
Wattage
Ohms
J
=
4,500Ω
9,000Ω
20,000Ω
35,000Ω
50,000Ω
Series Wattage Tolerance Ohms
210 = Vitreous
410 = Silicone Ceramic
610 = Centohm
R500 = 0.500 Ω
J = 5%
1R0 = 1 Ω
1R00 = 1 Ω
25W
250R = 250 Ω
1K00 = 1,000 Ω
25K0 = 25,000 Ω
25K5 = 25,500 Ω
K = 10% 250 = 250 Ω
50W
1K0 = 1,000 Ω
25K = 25,000 Ω
See website for custom
core and terminal info
75W
25K5 = 25,500 Ω
100W
S ta n d a r d p a r t n u m b e r S f o r 2 1 0 S e r i e S
Wꢄꢃꢃꢄgꢀ
Wꢄꢃꢃꢄgꢀ
Wꢄꢃꢃꢄgꢀ
Pꢄꢂꢃ No.
Prefix
Suffix
Pꢄꢂꢃ No.
Prefix
Suffix
Pꢄꢂꢃ No.
Prefix
Suffix
1.0 –––1R0E
150 –––150E
200 –––200E
250 –––250E
300 –––300E
400 –––400E
500 –––500E
750 –––750E
800 –––800E
1,000 –––1K0E
1,250 –––1K25E
1,500 –––1K5E
2,000 –––2K0E
2,500 –––2K5E
3,000 –––3K0E
4,000 –––4K0E
5,000 –––5K0E
6,000 –––6K0E
7,000 –––7K0E
7,500 –––7K5E
10,000 –––10KE
12,000 –––12KE
15,000 –––15KE
20,000 –––20KE
25,000 –––25KE
50,000 –––50KE
100,000 –––100KE
2
3
4
5
–––2R0E
–––3R0E
–––4R0E
–––5R0E
7.5 –––7R5E
10 –––10RE
15 –––15RE
20 –––20RE
25 –––25RE
50 –––50RE
75 –––75RE
100 –––100E
= Standard values; check availability using the worldwide inventory
50KΩ and 100KΩ resistance values involve very fine resistance wire and should not be
used in critical applications without burn-in and/or thermal cycling.
search at www.ohmite.com
32
Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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