Page 5
Optima 820 Series
1.5 General Description
The Optima 833 Series (model numbers MPD 833XXX) is a family of fifteen power distribution units (PDUs) designed for
use with 120/208 Vac 3
-phase
supply power.
Each PDU receives mains power through a NEMA L21-30P inlet located on either the front or rear panel depending on the
model. Power is distributed as 120 and/or 208 Vac through eight branch circuits, each outfitted with a variety of optional
outlets.
All models include an EMI filter, surge suppression, and remote-EPO feature. All models includes one unswitched NEMA
5-20R duplex receptacle which is not controlled by the remote-EPO feature. There are two styles of outlet configurations.
The first is where all outlets are 5-20R. These are separated into four circuits of four outlets. The second style includes
three circuits of four 5-20R outlets, two circuits each with one L5 or L6 twist lock outlet, and one L21-20R outlet which is
fed directly from the main breaker (there is no branch breaker).
All models are constructed of a steel chassis, and designed for fixed mounting within a 3U rack space in an EIA-310
compliant rack enclosure.
This documentation is about the hardware elements of the Optima 833 Series of PDUs. For detailed
information about the software, you’ll need the
Optima RCM User Guide : Software and Basic
Controls Reference
1.6 Product Models
Models are primarily organized by what type of power inlet they have. Then by the outlet configurations. All models have
a continuous duty rating of 24 A per phase at the inlet (30 A maximum). All models have two unswitched 5-20R outlets in
addition to the switched outlets noted in the table below.
Inlet Configurations
Switched Outlet Configurations
Front
Panel
Straight*
Front
Panel
Flanged*
Rear
Panel
Straight*
Straight
Blade
Outlets
Twist Lock
5-20R
L5-20
L5-30
L6-20
L6-30
L21-30
833000
833005
833010
16
833001
833006
833011
12
2
1
833002
833007
833012
12
2
1
833003
833008
833013
12
2
1
833004
833009
833014
12
2
1
* A complete part number follows the format of 833NNN-RRR-DDD where:
•
NNN is part of the base part number from the list of models.
•
RRR defines the RCM capabilities where:
•
–PSW = inlet power is monitored, outlets are switched
•
DDD is a dash number where:
•
–000 = the remote EPO, if present, is a Normally Open (N.O.) type
•
–001 = the remote EPO, if present, is a Normally Closed (N.C.) type
