Product Catalogue Power Resistors - Ruhstrat GmbH

Single-tube slide resistors
High-class ceramic tubes and perfect windings are the basis of
the high quality of our resistors and they make a long service
life as well as a great reliability possible. By means of a layer
made of a special cementation the windings are mechanically
fixed and protected against mechanical impacts from outside.
Moreover, the heat conduction is improved. Operation can be
effected manually as well as by means of a motor. In case of
motor operation, Ruhstrat supplies the desired components individually
according to your specifications, with drive and limit
switches.
Single-tube slide resistors in basic version with 2 terminals,
with manual slider, without cover
winding support: ceramic
winding: CuNi 44
For the resistor’s winding we use round resistor wire or resistor
band with a low thermal coefficient of resistance. Our resistors
are outstandingly suitable for applications requiring a high resistance
accuracy over a broad temperature range. Thanks to
the high resistance accuracy, there are no tolerances concerning
the resistance values.
Size
L 1
mm
L 2
mm
L 3
mm
L 4
mm
B 1
mm
150 × 30 196 174 150 90 64
B 2
mm
Single hole bore
H
mm
D
mm
S
kg
SA
kg
120 30 0.80 0.90
200 × 30 246 224 200 140 64 120 30 0.85 0.95
200 × 40 246 224 200 140 76 128 40 1 1,2
300 × 40 346 326 300 240 76 128 40 1,1 1,5
400 × 60 450 430 400 340 85 55 148 60 2,5 3,1
500 × 60 550 530 500 440 85 55 148 60 3,2 3,5
600 × 60 650 630 600 540 85 55 148 60 4,9 5,7
400 × 120 475 440 400 320 150 112 217 120 5 6,1
500 × 120 575 540 500 420 150 112 217 120 6,8 8,2
600 × 120 675 640 600 520 150 112 217 120 8,6 10,3
800 × 120 875 840 800 720 150 112 217 120 12,2 14,5
table: dimensions and weights
12Power resistors
capacitance: DIN = 0,5 – 0,8 W/cm 2
MAX. = 0,7 – 1,0 W/cm 2
rated voltage
for air gaps and
creep distances: 600 V AC or DC
test voltage: 2.5 kV, resistor connection against
touchable parts, acc. to DIN/VDE 0110
fig.: type S in basic version
with 2 terminals, with manual slider, without cover
Ruhstrat GmbH · Leinetal / Auf der Mauer 1 · 37120 Bovenden
fig.: type S with 3 rd binding post
Accessories (optional)
• A
• P
• Sp
• SpK
• Q
• Mo
• B
phone +49 (0) 55 1 820 830 - 0 · fax +49 (0) 55 1 820 830 - 50
cover
3 rd binding post (for resistors to be used as voltage
dividers)
spindle drive with handle
spindle drive with bevel gear and handle
stepped winding
motor drive AC/DC
Base plate with rubber feet
fig.: type SSA
with 2 binding posts, with manual slider, with cover
e-mail: info@ruhstrat.com · www.ruhstrat.com