210 Series
Dividohm Vitreous Enamel
Adjustable Power
FeatureS
Terminals suitable for soldering or bolt connection.
Choose Ohmites 210 Type adjustable resistors for
Adjustable lug supplied applications requiring settings at different resistance
values. These wirewound resistors are equipped with
High wattage applications
an adjustable lug, making them ideal for adjusting
All-welded construction
circuits, obtaining odd resistance values and set-
Rugged lead free vitreous enamel coating.
ting equip ment to meet various line voltages. 210
Type resistors feature a hollow core to permit secure
Flame resistant coating
fastening with spring-type clips or thru bolts with
Additional adjustable lugs available
washers. They also offer the durability of lead free
RoHS compliant product available. Add E suffix to
vitreous enamel coating and all-welded construction.
part number to specify
Mounting brackets not included with resistors.
SerieS SPeciFicatiONS
Series Wattage Ohms Core Code Voltage Standard Terminal
D12 12 1.0-10K D 565 57
D25 25 1.0-25K K 625 40
D50 50 1.0-100K K 1625 40
D75 75 1.0-100K K 2625 40
D100 100 1.0-100K M 2845 40
D175 175 1.0-100K P 3595 46
D225 225 1.0-100K P 4595 46
D500 500 1.5-15K S 4970 45
D1000 1000 3.0-27.7K S 8900 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
Adjustability
resistance value.
Lead free vitreous enamel. Large models (500 watts and up) are
Coating
supplied in Silicone Ceramic. Also available in low-cost Centohm
coating; Consult factory.
Tubular ceramic.
Core
Terminals Solder coated radial lug. RoHS solder composition is 96% Sn,
Power limitations for high resis-
3.5% Ag, 0.5% Cu
tance values: When resistance
Adjustable Nickel plated steel. (Screwdriver type adjustable lug supplied
exceeds the resistance values listed
terminal standard. Other types, including silver contact units, available.)
below, derate the Power Rating by
25% to improve reliability:
Derating Linearly from 100% @ +25C to 0% @ +350C.
Power Resistance No power
Tolerance 10% (K)
rating value derating neces-
Power rating Based on 25C free air rating. The stated wattage rating applies
sary for ratings
12W 4,500
only when the entire resistance is in the circuit. Setting the lug at
higher than
25W 9,000
an intermediate point reduces the wattage rating by approximately
100W.
50W 20,000
the same proportion. Example: If the lug is set at half resistance,
the wattage is reduced by approx. one-half. 75W 35,000
100W 50,000
Overload 10 times rated wattage for 5 seconds.
260 ppm/C
Temperature
coefficient
Dielectric 1000 VAC: 12 to 100 watt rating. 3000 VAC: 175 and 225 watt rat-
withstanding ing (measured from terminal to mounting bracket)
voltage
Max. amps To calculate, use the formula P/R.
1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com 109
210 Series
Dividohm Vitreous Enamel
Adjustable Power
dimeNSiONS
(in. / mm)
Series Wattage L D C Core Code Standard Terminal
D12 12 1.75 / 44.4 0.313 / 7.94 0.188 / 4.76 D 57
D25 25 2.0 / 50.8 0.562 / 14.3 0.313 / 7.94 K 40
D50 50 4.0 / 101.6 0.562 / 14.3 0.313 / 7.94 K 40
D C
D75 75 6.0 / 152.4 0.562 / 14.3 0.313 / 7.94 K 40
D100 100 6.5 / 165.1 0.750 / 19.1 0.50 / 12.7 M 40
L
D175 175 8.5 / 215.9 1.125 / 28.6 0.75 / 19.1 P 46
D225 225 10.5 / 266.7 1.125 / 28.6 0.75 / 19.1 P 46
D500 500 12.0 / 304.8 2.50 / 63.5 1.75 / 44.5 S 45
D1000 1000 20.0 / 508.0 2.50 / 63.5 1.75 / 44.5 S 45
OrderiNg iNFOrmatiON
Coating
Made-to-order Parts
Blank =Vitreous
C= Centohm RoHS Compliant
Core Diameter Terminal Type
S= Silicone
See Core and See Resistor Terminals
Terminal Selection for Tubular Cores RoHS Compliant
See 270 series custom core
Series Wattage Tolerance Ohms
and terminal info
J= 5% 1R0 = 1
Tolerance
Coating Wattage Ohms
K= 10% 250 = 250
J = 5%
210 = Vitreous R500 = 0.500
K = 10%
1K0 = 1,000
410 = Silicone Ceramic 1R00 = 1
25K = 25,000
610 = Centohm 250R = 250
25K5 = 25,500
1K00 = 1,000
25K0 = 25,000
25K5 = 25,500
Standard Values
Wattage Wattage Wattage
Part No. Part No. Part No.
Prefix Prefix Prefix
Suffix
Suffix Suffix
1.0 1R0E 150 150E 3,000 3K0E
2 2R0E 200 200E 4,000 4K0E
3 3R0E 250 250E 5,000 5K0E
4 4R0E 300 300E 6,000 6K0E
5 5R0E 400 400E 7,000 7K0E
7.5 7R5E 500 500E 7,500 7K5E
10 10RE 750 750E 10,000 10KE
15 15RE 800 800E 12,000 12KE
20 20RE 1,000 1K0E 15,000 15KE
20,000 20KE
25 25RE 1,250 1K25E
50 50RE 1,500 1K5E 25,000 25KE
75 75RE 2,000 2K0E 50,000 50KE
100 100E 2,500 2K5E 100,000 100KE
50K and 100K resistance values involve very fine resistance wire and should not be
= S tandard values; check availability at
used in critical applications without burn-in and/or thermal cycling.
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110 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com
Ohmic value
D12K 12
D25K 25
D50K 50
D75K 75
D100K 100
D175K 175
D225K 225
D500K 500
D1000K1000
Ohmic value
D12K 12
D25K 25
D50K 50
D75K 75
D100K 100
D175K 175
D225K 225
D500K 500
D1000K1000
Ohmic value
D12K 12
D25K 25
D50K 50
D75K 75
D100K 100
D175K 175
D225K 225