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210 Series
D L
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. * Thumb-screw-adjustable lug available (Part No. 2160) for 1.125" core resistors. * RoHS compliant product available. Add "E" suffix to part number to specify. Dimensions (in. / mm) D C 0.313 / 7.94 0.188 / 4.76 0.562 / 14.3 0.313 / 7.94 0.562 / 14.3 0.313 / 7.94 0.562 / 14.3 0.313 / 7.94 0.750 / 19.1 0.50 / 12.7 1.125 / 28.6 0.75 / 19.1 1.125 / 28.6 0.75 / 19.1 2.50 / 63.5 1.75 / 44.5 2.50 / 63.5 1.75 / 44.5 Core Code D K K K M P P S S Voltage 565 625 1625 2625 2845 3595 4595 4970 8900 standard terminal 57 40 40 40 40 46 46 45 45
Dividohm(R) Vitreous enamel adjustable Power
C
series D12 D25 D50 D75 D100 D175 D225 D500 D1000
Wattage 12 25 50 75 100 175 225 500 1000
Ohms 1.0-10K 1.0-25K 1.0-100K 1.0-100K 1.0-100K 1.0-100K 1.0-100K 1.5-15K 3.0-27.7K
L 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
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 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 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.
ordering info
Coating Blank = Vitreous C = Centohm S = Silicone RoHS Compliant
sPeCiFiCatiONs
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.
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 contact units, available.) Derating: Linearly from 100% @ +25C to 0% @ +350C. Electrical Tolerance: 10% (K) Power rating: Based on 25C 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 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 rating (measured from terminal to mounting bracket) To calculate max. amps: use the formula P/R. See page 36 for mounting hardware
made-to-order
Core Diameter See "Core and Terminal Selection" Terminal Type See "Resistor Terminals for Tubular Cores" RoHS Compliant
Ohms 1R0 = 1 250 = 250 1K0 = 1,000 25K = 25,000 25K5 = 25,500
Coating Wattage 210 = Vitreous 410 = Silicone Ceramic 610 = Centohm Ohms R500 = 0.500 1R00 = 1 250R = 250 1K00 = 1,000 25K0 = 25,000 25K5 = 25,500 Tolerance J = 5% K = 10%
Series Wattage Tolerance J = 5% K = 10%
See website for custom core and terminal info
Power limitations for high resistance values: When resistance exceeds the resistance values listed below, derate the Power Rating by 25% to improve reliability: Power Resistance No power rating value derating 12W 4,500 necessary for 25W 9,000 ratings higher 50W 20,000 than 100W. 75W 35,000 100W 50,000
S ta n d a r d pa rt n u m b e r S f o r 2 1 0 S e r i e S
D1000K---1000 D1000K---1000 Wattage D100K--- 100 D225K--- 225 D175K--- 175 D500K--- 500 12 25 50 75 Ohmic value Part No. Prefix Suffix Wattage D100K--- 100 D175K--- 175 D500K--- 500 D225K--- 225 D12K--- 12 D25K--- 25 D50K--- 50 D75K--- 75 Ohmic value Part No. Prefix Suffix ---150E ---200E ---250E ---300E ---400E ---500E ---750E ---800E ---1K0E ---1K25E ---1K5E ---2K0E ---2K5E Wattage D100K--- 100 Ohmic value Part No. Prefix Suffix ---3K0E ---4K0E ---5K0E ---6K0E ---7K0E ---7K5E ---10KE ---12KE ---15KE ---20KE ---25KE ---50KE ---100KE D175K--- 175 D12K--- 12 D50K--- 50 D225K--- 225 D25K--- 25 D75K--- 75
D12K---
D25K---
D50K---
1.0 ---1R0E 2 ---2R0E 3 ---3R0E 4 ---4R0E 5 ---5R0E 7.5 ---7R5E 10 ---10RE 15 ---15RE 20 ---20RE 25 ---25RE 50 ---50RE 75 ---75RE 100 ---100E
D75K---

150 200 250 300 400 500 750 800 1,000 1,250 1,500 2,000 2,500

3,000 4,000 5,000 6,000 7,000 7,500 10,000 12,000 15,000 20,000 25,000 50,000 100,000

= Standard values; check availability using the worldwide inventory search at www.ohmite.com 32
50K and 100K resistance values involve very fine resistance wire and should not be used in critical applications without burn-in and/or thermal cycling.
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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