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ac Resistance
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In the
GenRad
Tradition...
In the GenRad Tradition
The World Leader in Metrology since 1915



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the USA

Manual Two-terminal Resistance Substitution Box

RS Series Digital Resistance Substitution Box
Data Sheet

The RS Resistance Substitution Box is the most commonly used decade box on the market today. The RS Series Resistance Substitution Box is not only easier to use, but it is also priced lower than all of its competiton.

The RS Series resistance substitution box are an economical, indispensable collection of tools with a variety of uses in engineering, design, troubleshooting, or service fields.

RS-200 Resistance Substitution Box

If you have additional needs such as a translation table, consider the microprocessor controlled ohmSource.

Best Resistance Substitution Box Value Available

  • Accurate .01% to 1%
  • Broad choice of standard and optional models with many powerful features
  • Compact, convenient, and rugged
  • Panel Mounting, Shielded Case and Fuse Protection options available

These are our most popular models. Refer to the RS Resistance Substitution Box Data sheet and specs (.PDF Format) for a full list of versions and options.

Model
RS-200
RS-201
RS-200W
RS-201W
RS-200-2W
RS-201W-2W
RS-RTD
Type
Basic Resistance
Precision Resistance
Wide Range Resistance
Wide Range
Precision
Resistance
High Power Resistance
High Power
Wide Range Resistance
RTD Simulator
Accuracy*
±(1%+25 mΩ)
±(0.1%+25 mΩ)*
±(1%+36 mΩ)
±(0.1%+36 mΩ)*
±(1%+25 mΩ)
±(0.1%+36 mΩ)*
±(0.1%+25 mΩ)*
Decades
7
9
7
9
6
Range
0 - 9,999,999 Ω
0 - 99,999,999.9Ω
0 - 9,999,999 Ω
0 - 99,999,999.9Ω
0 - 9,999.99 Ω
Resolution
1 Ω
0.1 Ω
1 Ω
0.1 Ω
0.01 Ω
Components
Metal fi lm resistors; Manganin wire ≤ 0.9 Ω
Ratings
0.5 W**
2W
0.5W
Residual
0.3 Ω (0.04 Ω/dec.), typical
≤0.5 Ω (≤0.056 Ω/decade)
≤0.39 Ω
≤0.5 Ω
≤0.34 Ω
Physical
A
B
A
B
A
A
8.1 x 7.9 x 5.6 cm; 184 g (3.2 x 3.1 x 2.2 in; 6.5 oz.)
B
12 x 7.9 x 5.6 cm; 235 g (4.7 x 3.1 x 2.2 in; 8.3 oz.)
 *Accuracy: After subtraction of residual impedance: traceable to SI. For 0.1% models accuracy is 0.2 % for ≤ 9 Ω & ≥ 10 MΩ

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