861 Power Controller
From Computer History Wiki
The 861 Power Controller provides line AC power distribution, and also allows remote power control (via DEC's Remote Switching Control Bus).
It is designed to fit into a 19" cabinets such as an H960 rack, and requires 5-1/4" of rack space.
There are several models of the 861, which vary in the input voltage, plug, etc:
- 861-A - 110V two-phase, 4-prong twist plug NEMA L14-20P
- 861-B - 220V single-phase, 3-prong twist plug NEMA L6-20P
- 861-C - 110V single-phase, 3-prong twist plug NEMA L5-30P
- 861-D - 110V three-phase, 5-prong twist plug NEMA L21-30P
- 861-E - 220V three-phase, no cable
- 861-F - 110V single-phase, 3-prong standard plug (limited current)
In addition to the Remote Switching Control Bus, the unit may be controlled by a 'Local'/'Off'/'Remote' switch (the last turning control over to the Control Bus).
