Simplex 4081-9004 — end-of-line resistor harness, 6.8 kΩ, 1/2 W, 5% tolerance (reference number 733-886).
A Class B field circuit is supervised by a resistor at the far end of the run: the panel pushes a small current through it, so a broken conductor shows up as an open-circuit trouble. This harness puts that resistor on stripped, crimped leads so it can be landed on the last device rather than twisted in bare. The resistance a circuit needs is fixed by the panel's field wiring specification, so confirm the value on the drawings before ordering.
- 6.8 kΩ, 1/2 W, 5% tolerance; Class B end-of-line use
- Overall length about 9-1/2" (241 mm); leads 7" (178 mm)
- 18 AWG, 600 V black insulation; leads stripped 0.5" (13 mm) and tinned
- Resistor leads crimped to the wires and covered with heat shrink
- UL Listed to Standard 864
Check the value twice: 4081-9008 is the 10 kΩ harness, and every 1 W part in the 4081 series is a different resistance — there is no 6.8 kΩ 1 W version.
