Circuit Breakers
and
Busbars
Circuit Breakers
Altech’s Circuit Breaker Line
• UL1077 (R-Series)
• UL508 (V-EA Series)
• UL489 (L-Series, AB-Series)
R-Series
Circuit Breakers
(UL1077 Recognized Supplementary Protector)
• Short Circuit Withstand Rating 10kA@480Y/277VAC (48VDC
rating self-certified)
• B, C, D Trip Curve (0.5-63A)
• 1,2,3,4 pole
• Accessories: Add-on Neutral Pole, Shunt Trip, Undervoltage Trip,
Auxiliary Contact
• UL listed Busbars
V-EA Series
Circuit Breakers
(UL508 listed Manual Motor Controller)
• Short Circuit Withstand Rating 10kA@480Y/277VAC, 50/60Hz
• B (1-63A), C (0.3-63A), D (0.3-63A)), E (0.3-63A), G (0.3-63A),
Z (0.3-50A) Trip Curve
• 1,2,3,4 pole
• 1 pole plus Neutral
• Accessories: Add-on Shunt Trip, Undervoltage Trip, Auxiliary
Contact
• UL listed Busbars
L-Series
Circuit Breakers
(UL489 listed Miniature Molded Case Circuit Breaker)
• Voltage Rating 240VAC (0.2-63A), 480Y/277VAC (0.2-32A),
125VDC (1 pole)/ 250VDC (2 pole) (0.2-63A)
• 10kA Short Circuit Interrupt Capacity
• AC and DC
• C, D Trip Curve
• 1,2,3,4 pole
• Accessories: Add-on Neutral Pole, Shunt Trip, Undervoltage Trip,
Auxiliary Contact
• UL listed Busbars
AB-Series
Circuit Breakers
(UL489 listed Molded Case Circuit Breaker)
•
•
•
•
•
Interrupting Capacity up to 100kA (240VAC)
Thermal Magnetic
Door Interlock Handle
3 pole
Accessories: Auxiliary Switch, Alarm Switch, Shunt/
Undervoltage Trip
UL Standards and its Functions
Circuit Breakers
Standard
Function
Circuit Breakers
UL Standards and its Functions
Standard
Function
UL1077
Supplementary Protector
Overload Protection
Circuit Breakers
UL Standards and its Functions
Standard
Function
UL1077
Supplementary Protector
Overload Protection
UL508
Manual Motor Controller
Overload Protection
Switching Function
Disconnect Function*
*when suitable for disconnect means
Circuit Breakers
UL Standards and its Functions
Standard
Function
UL1077
Supplementary Protector
Overload Protection
UL508
Manual Motor Controller
Overload Protection
Switching Function
Disconnect Function*
*when suitable for disconnect means
UL489
(Miniature) Molded Case
Circuit Breaker
Overload Protection
Switching Function
Disconnect Function
Short Circuit Protection
Application Example 
Circuit Breakers
Typical UL508A Panel
Circuit Breakers
Typical UL508A Panel
Circuit Breakers
Typical UL508A Panel
Circuit Breakers
Typical UL508A Panel
Altech’s Busbar Line
Busbars
• UL508 listed Busbars
• UL489 listed Busbars
Distribution Block  Busbar
Busbars
e.g. #38049 (80A, 1xInput, 6xOutput)
Distribution Block  Busbar
e.g. #38049 (80A, 1xInput, 6xOutput)
Input
Phase 2
Input
Phase 3
80A
80A
80A
80A
80A
80A
Outputs
Phase 1
Outputs
Phase 1
Outputs
Phase 1
Busbars
Input
Phase 1
Distribution Block  Busbar
e.g. #38049 (80A, 1xInput, 6xOutput)
Input
Phase 2
Input
Phase 3
80A
80A
80A
80A
80A
80A
Outputs
Phase 1
Outputs
Phase 1
Outputs
Phase 1
Busbars
Input
Phase 1
e.g. #P50UT + #3P18U318
Distribution Block  Busbar
e.g. #38049 (80A, 1xInput, 6xOutput)
Input
Phase 1
Input
Phase 2
Input
Phase 3
80A
80A
80A
e.g. #P50UT + #3P18U318
Busbars
80A
1 2
1
2
3
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
80A
80A
80A
80A
Outputs
Phase 1
Outputs
Phase 1
Outputs
Phase 1
Distribution Block  Busbar
e.g. #38049 (80A, 1xInput, 6xOutput)
Input
Phase 1
Input
Phase 2
Input
Phase 3
80A
80A
80A
e.g. #P50UT + #3P18U318
Busbars
80A
1 2
1
2
3
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
80A
80A
80A
80A
80A
Outputs
Phase 1
Outputs
Phase 1
Outputs
Phase 1
Distribution Block  Busbar
e.g. #38049 (80A, 1xInput, 6xOutput)
Input
Phase 1
Input
Phase 2
Input
Phase 3
80A
80A
80A
e.g. #P50UT + #3P18U318
Busbars
80A 80A 80A
1 2 3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
80A
80A
80A
80A
80A
80A
Outputs
Phase 1
Outputs
Phase 1
Outputs
Phase 1
Distribution Block  Busbar
e.g. #38049 (80A, 1xInput, 6xOutput)
Input
Phase 1
Input
Phase 2
Input
Phase 3
80A
80A
80A
e.g. #P50UT + #3P18U318
Busbars
80A 80A 80A
1 2 3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
80A
80A
80A
80A
80A
80A
Outputs
Phase 1
Outputs
Phase 1
Outputs
Phase 1
Busbar:
-no wiring between distribution and control
device
-Installation-time saving
Power Feed (Power Input) Methods (1)
1)Start/End Feed-Method
(e.g.
with Power Feed Lug P50UT and 18mm² Busbar)
Busbars
80A 80A 80A
1 2 3
3P18U3/18
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
80A
80A
80A
Power Feed (Power Input) Methods (2)
2)Center/Middle Feed-Method
(e.g.
with Power Feed Lug P50UT and 18mm² Busbar)
Busbars
115A
1 2
3
3P18U3/18
1
35A
1
1
1
1
1
80A
Power Feed (Power Input) Methods (3)
2)Center/Middle Feed-Method
(e.g.
with Power Feed Lug P50UT and 18mm² Busbar)
Busbars
115A 115A
1 2 3
3P18U3/18
1
35A
35A
2
1
2
1
2
1
2
1
2
1
2
80A
80A
Power Feed (Power Input) Methods (4)
2)Center/Middle Feed-Method
(e.g.
with Power Feed Lug P50UT and 18mm² Busbar)
Busbars
115A 115A115A
1 2 3
3P18U3/18
1
35A
35A
35A
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
80A
80A
80A
Power Feed (Power Input) Methods (5)
2)Center/Middle Feed-Method
(e.g. with Power Feed Lug P50UT and 18mm² Busbar)
Busbars
115A 115A115A
1 2 3
3P18U3/18
1
2
3
1
2
3
1
2
3
1
2
3
35A
35A
35A
1
2
3
1
2
3
80A
80A
80A
35A + 80A = 115A
Power Feed (Power Input) Methods (6)
2)Center/Middle Feed-Method
3P25U3/18
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
P95UB
BRS5
Phase 2
2
Phase 3
1
Phase 1
Busbars
(e.g. with Power Feed Block P95UB and 25mm² Busbar)
Power Feed (Power Input) Methods (6)
2)Center/Middle Feed-Method
Busbars
(e.g. with Power Feed Block P95UB and 25mm² Busbar)
3P25U3/18
P95UB
1
1
1
100A
1
100A
200A
Input
Phase 1
Power Feed (Power Input) Methods (6)
2)Center/Middle Feed-Method
Busbars
(e.g. with Power Feed Block P95UB and 25mm² Busbar)
3P25U3/18
P95UB
1
2
1
2
1
100A
100A
2
1
2
100A
100A
200A
200A
Input
Phase 1
Input
Phase 2
Power Feed (Power Input) Methods (7)
2)Center/Middle Feed-Method
(e.g.
Busbars
with Power Feed Block P95UB and 25mm² Busbar)
3P25U3/18
P95UB
1
2
3
1
2
3
100A
100A
100A
200A 200A 200A
Input Input Input
Phase 1 Phase 3 Phase 2
1
2
3
1
2
3
100A
100A
100A
Busbars
UL1077/508 Busbar System (1)
• Electrical Rating: 80A@480VAC (18mm² Pins),
100A@480VAC (25mm² Pins)
• 1,2,3 Phase
• Any possible Pin configuration (1-57Pins)
• ½ pole spacing (auxiliary switch) available
• Power feeding: Power Feed Lugs (115A), Direct Power Feed (80A),
Power Feed Block (200A)
• UL508 listed
Busbars
UL1077/508 Busbar System (2)
• Busbars can be cut to customers needs without loosing UL-approval
• UL recognized and listed for Altech’s R-Series, V-EA Series and MA
Series of Manual Motor Controllers and Supplementary Protectors
• UL recognized and listed for use with most competitor’s UL1077
supplementary protectors and UL508 Manual Motor Controllers
Busbars
UL489 Busbar System (1)
•
•
•
•
•
Electrical Rating: 80A@480VAC (16mm² Pins)
1,2,3 Phase
6, 12, 18 Pin configuration
Power feeding: Power Feed Lugs (115A), Direct Power Feed (80A)
UL489 listed
Busbars
UL489 Busbar System (2)
• Every Pin configuration possible by combination of existing
6, 12 and 18 Pin Busbars
• UL listed for Altech’s L-Series of Miniature Molded Case
Circuit Breaker
• UL listed for use with most competitor’s UL489
Miniature Molded Case Circuit Breaker
Busbars
Configuration of UL489 Busbars (1)
• UL489 Busbars are available in 3 different Pin Configurations
per Phase (6, 12 and 18 Pins)
• They can’t be cut, since the creapage and clearance distance
requirements from UL are too stringent.
• Therefore to obtain the desired No. of Pins, Busbars can and
must be overlapped
Configuration of UL489 Busbars (2)
Busbars
1)
Busbars are overlapped backwards to each other
Configuration Examples:
1 Phase Busbars
3 Phase Busbars
Configuration of UL489 Busbars (3)
Busbars
1)
2)
Busbars are overlapped backwards to each other
The Number of overlapping Pins of 2 Busbar must be a
multiplier of the Number of Phases to keep existing Phase
sequence. (Can be overlapped by more than the number of
phases)
Configuration Examples:
1 Phase Busbars
3 Phase Busbars
Configuration of UL489 Busbars (4)
Busbars
1)
2)
3)
Busbars are overlapped backwards to each other
The Number of overlapping Pins of 2 Busbar must be a
multiplier of the Number of Phases to keep existing Phase
sequence. (Can be overlapped by more than the number of
phases)
Any available combination of the 3 different Pin
configurations is possible
Configuration Examples:
1 Phase Busbars
3 Phase Busbars
Thank You!!