cULus 67 PANELBOARD
PRODUCT OVERVIEW
BUSSWORKS
JANUS
What’s in a name?
Why brand an electrical product JANUS?
JANUS was a god of Roman mythology with two faces looking in
opposite directions. The god was known to symbolize the transition
point between the past and the future.
The introduction of Bussworks’ JANUS power distribution system also
represents a transition point for the electrical industry. A point where
distribution systems have an “open architecture” and are compatible
with all available components, regardless of the manufacturer.
Traditional power distribution systems are designed by breaker
manufacturers to only use one type of breaker. This forces the
customer into a relationship with only one breaker manufacturer for
the life of their product. Sole source products of this type limit
competition, stifle innovation, and inflate market prices.
Bussworks developed JANUS to change the sole source power
distribution and breaker sales paradigm.
JANUS is what happens when an independent company designs a
panelboard to be compatible with all Molded Case Breakers and
Miniature Circuit Breakers on the market.
BUSSWORKS
JANUS
Specification
Mechanical Characteristics
US Patent Number
Certification
Touchsafe Design
9,197,039
IEC60529 IP20
Personnel have no exposure to energized
components during servicing or operating
any portion of the system
Electrical Characteristics
Certification
System Ampacity
Branch Circuit Ampacity
Voltage Rating
Voltage Type
Withstand
Neutral
cULus 67 and CSA22.2
225, 400, 600, 800A
32, 63, 100A
120, 240, 277, 480, 575, 600VAC
Delta or Wye / 1ph or 3ph / 2,3, or 4 wire
65kA
100% or 200% / Linear or Non-linear Loads
Configurations
Enclosure
Interior Only
UL50 Type 1
Available as Single Unit
Main Incoming
Single Cable
Parallel Cables
Parallel Cables
Main Lug or Main Breaker
600MCM Compression Lug
300MCM Compression Lug
350MCM Crimp Lug
Branch Configuration
Circuits
Single or Double Column
12, 24, 36, 42, 72
BUSSWORKS
JANUS
Compatibility
Main Incoming Molded Case Breakers
Schneider-SqD, Eaton-Cutler Hammer, Siemens, GE,
ABB, Rockwell, WEG, LG/LS, Noark
Branch Miniature Circuit Breakers
ABB
ABB
ABB
Altech
Altech
Carlo Gavazzi
Carlo Gavazzi
CBI
Eaton
Eaton
ETA
GE
GE/AEG
Nader
Noark
Noark
Rockwell
Rockwell
BUSSWORKS
S200U
S200UP
S800U
L
UL
GMB
GMBH
QL
FAZ
QC/QCD/QCR/QCGF
4230
TQC/THQC/THHQC
EP 100ULH
NDB2T
B1H
B1N
MCA/MCB/MCEA/MCGA
1489M
Schneider
Schneider
Siemens
Siemens
Siemens
Sprecher + Schuh
SqD
Techna
WEG
Weidmuller
Multi 9 C120
Multi 9 C60
5SJ4 HG41
5SJ4 HG42
BQ/BQH/HQB
L9
QOU
Jtec
UMBW
BR
JANUS
Operation
Load
Power Distribution
Via Insulated Bus
Protection Device
Power to Load Via
Branch Breaker
Plug Connector
Power
Flow
Incoming Lug
BUSSWORKS
Incoming Power
Via Direct Cable or
Main Breaker to Lugs
Power Pulled from
Bus and Applied To
Branch Breaker Via
Spring Connector
JANUS
Operation
Spring Connector Clamp
Secures spring connector
assembly to the interior
Spring Connector Joiner
Allows single spring
connectors to be joined
together for 2pole and
3pole breakers
Spring Connector
Plugs into bus allowing
power to be pulled from the
bus and connected to the
breaker
Branch Circuit Plug
Fills spare circuit
connection wells making
assembly touch safe
BUSSWORKS
JANUS
Configurations
Configurability
The system is sold in standard configurations 12, 24, 36, 42, and
72 to correspond with existing competing systems.
JANUS is the only UL67 panelboard that is configurable. Any
multiples of circuits are available due to system modularity.
Example: 13 circuit double sided.
Part Number Example
BUSSWORKS
JANUS
Dimensions
Single Sided
Double Sided
Single Sided
Circuit
12
24
36
72
A
B
C
D
7.8 in
7.8 in
7.8 in
7.8 in
22.5 in
34.0 in
47.2 in
86.9 in
2.6 in
2.6 in
2.6 in
2.6 in
3.5 in
3.5 in
3.5 in
3.5 in
Double Sided
Circuit
12
24
36
72
BUSSWORKS
A
B
C
D
14.4 in
14.4 in
14.4 in
14.4 in
22.5 in
34.0 in
47.2 in
86.9 in
2.6 in
2.6 in
2.6 in
2.6 in
3.5 in
3.5 in
3.5 in
3.5 in