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Seaward RM8
8 Decade Resistance Box, 0.01 ohms to 100 kohms

  • 8 Decades
  • Wide range: 0.01 ohm to 1 Mohm
  • Resistors: Rotary 2 pole in parallel, contacts silver plated brass with positive click mechanism.
  • Insulation: > 50,000 Megohm
  • Switches: Insulated will accept 4 mm banana plugs and spade tags.
  • Residual Resistance: < 0.1 ohm
  • Terminals: 2 binding posts will accept 4 mm banana plugs and spade tags. 1 terminal for connection to panel/earth
  • Test Voltage: 1 kV DC between terminals and panel
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Seaward RM8 Shown
Product Information
Datasheet 105 KB PDF
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The Seaward RM8 decade resistance box is designed to complement our range of resistance boxes, offering a very wide range 0.01 ohm to 1 Mega ohm in a compact and versatile unit.

The low decade steps of 0.01 ohm enable very high resolution, when simulating resistance values and the power rating is 1.0 watt per coil. The RM8 uses double pole switching to minimize the effects of contact resistance.

The lower value decades (0.01 and 0.1 ohm) are manufactured from Manganin resistance wire and the other decades from selected metal film resistors. This offers good stability combined with excellent load and temperature coefficients.

Housed in a hardwood case with metal panel the size is only 254 x 145 x 80mm and the connections are with 4mm binding posts that will accept spade or banana plugs.

Ordering Information
Model Description Buy Now Price
RM8 Seaward RM8 8 Decade Resistance Box, 0.01 ohms to 100 kohms Buy Now $895.00
Included Accessories
  • 1 - Decade box
  • 1 - User manual
Included