Download Altech/ABL Sursum Miniature Circuit Breakers

Miniature
Circuit Breakers
Sales Training Outline 2006
Klaus Tum
Product Manager
35 Royal Road
Flemington, NJ
908-806-9400
www.altechcorp.com
Klaus Tum (short bio)
• Electrical Engineer
• 10 years with Altech Corporation
• Product Manager of Circuit Breakers,
Busbars, Motor Disconnect Switches,
Foot Switches, Sensors, Contactors,
Motor Starters, Pin & Sleeve
Connectors
Altech’s Line of
Circuit Breakers Includes:
•
•
Miniature circuit breakers
-UL508
•
Three phase adjustable trip
circuit breakers
•
Earth leakage circuit breakers
•
Accessories
Introduction
•
The Altech Miniature Circuit Breaker (MCB)/ Manual Motor
Controller is a circuit protection device, which is able to protect
the wiring and the loads of electrical circuits.
•
These MCB’s are a Thermal-Magnetic type circuit breaker.
•
The wiring/cabling will be protected from overloads by the
MCB’s Thermal part and the loads (motors, heaters, power
supplies, etc.) will be protected from short circuits by its
magnetic parts.
•
NOTE: The Altech MCB can only be used as a “supplementary
Protector”. It CANNOT be used as a branch circuit protector
(Molded Case Circuit Breaker (MCCB) or UL listed RK5 fuse).
General Specifications
•
Manual Motor Controller UL 508 Listed suitable for Motor Disconnect
Means. DIN Rail mountable
•
Electrical ratings: 0.3A up to 60A, 480Y/ 277VAC
•
Interrupting capacity: 10kA (with back-up fuse)
•
Group ratings: 5 and 10kA (without circuit branch protection)
•
Thermal magnetic type
•
Six different trip characteristics:
– B, C, D, E, G, Z – UL, CSA, CE
•
1, 2, 3 pole and 1 & 3 pole plus neutral configurations
•
Accessories
– Auxiliary Switch (UL508 Listed)
– Shunt Trip (UL508 Listed)
– Undervoltage Trip
•
UL508 Listed Busbar Distribution System
Thermal-Magnetic Principle
Main Current & Arc Current
Limiting Path
______________
Main (line) Current Path
----------------
Arc Current Limiting Path
Thermal Principle
(Overload Protection)
•
The thermal part of the circuit breaker utilizes a bimetallic
strip electrically in series with the circuit. The heat generated
by the current during an overload deforms the bimetallic strip
and trips the circuit breaker.
– Example:
• Overload occurs when the vacuum is obstructed and the power cord
gets overheated.
– NOTE: The thermal part of the circuit breaker is temperature
sensitive and can be adversely affected by changes in ambient
temperature (MCB calibrated at 40° C (104° F) ).
Magnetic Principle
(Short Circuit Protection)
•
The magnetic part of the circuit breaker consists of
an electromagnetic coil and an armature device that
opens the movable contact quickly to protect the
circuit whenever the current (short circuit current)
exceeds a predetermined value. This happens
because the current in the coil generates sufficient
magnetic flux to attract the armature. Reset is
manual and rapid.
– Example:
• Short circuit occurs when the hot wire and neutral/ground
accidentally come together.
Trip-Characteristics & Applications
Section A
Overload
Y
Time
Z
X
V
Section B
Short Circuit
W
U
Current
Time
Trip-Characteristics & Applications
Z
Section A
Overload
Y
Current
Section A- Overload
•
This section reflects the protection behavior of the circuit breaker when an overload
occurs. Usually the overload increases its value above the rated current slowly.
–
The left line shows when the MCB does not trip.
–
The right line is the opposite, the MCB must trip!
–
The middle black line indicates the “ideal” trip curve. Due to manufacturing
tolerances and surrounding influences, the MCB can only be calibrated
“around” this line.
Trip-Characteristics & Applications
Short
Circuit
Time
Section B
X V
U
W
Current
Section B - Short Circuit
•
This section reflects the protection behavior of the circuit breaker in the case of an
inrush current or a short circuit.
– Inrush current occurs when the load is turned on and off (the inrush of a
regular motor is approximately 6x the rated current). It is VERY important to
know the inrush current when selecting the proper circuit breaker. The time
of an inrush is usually between 100-500ms. If the correct circuit breaker is
selected it will be insensitive to the inrush current (see points “X” & “W”). The
circuit breaker will trip if the current exceeds 16XRC in 100ms (see point “V”).
Section B
Short
Circuit
Time
Section B - Short Circuit - Continued
X V
U
W
Current
– Short Circuit Current is the current which occurs in the case of a
hot wire and ground/neutral coming together.
• This current is usually very high (between 300A - 2000A) and
the circuit breaker will trip within milliseconds.
Note: If the MCB has a rated current of 10A, it will trip in
7ms, if the short circuit current is 400A (see point “U”).
TIME
The B-Trip Characteristic
CURRENT
•
•
Applications
– Business equipment, wiring protection, lighting, appliances,
control circuits, some motors and some electronic circuits
Available current
– 0.3A-60/63A
The C-Trip Characteristic
•
•
Applications
– Low inrush, 3-4x rated current, motors, lighting, wiring
protection, appliances, business equipment, control circuits
Available current
– 0.3A-60/63A
The D-Trip Characteristic
•
•
Applications
– High inrush, 10-16x rated current, motors, transformers,
power supplies, heaters, reactive loads
Available current
– 0.3A-60/63A
The E-Trip Characteristic
•
•
Application
– High efficiency motors, which have very high inrush,
12x rated current
Available current
– 0.3-60/63A
The G-Trip Characteristic
•
•
Applications
– General industrial, including motors, some transformers,
solenoids, control circuits, lighting, wiring
Available current
– 0.3-60/63A
The Z-Trip Characteristic
•
•
Applications
– Semiconductors, components with low surge current
and short circuit withstand capabilities
Available current
– 0.3-50A
Summary of Applications/Trip Curve Selection
Guide
Summary of Applications/Trip Curve
Selection Guide
(Continued)
.
UL 508 Style
• Catalog
number will be imprinted on the
Circuit Breaker as shown in the picture to
the left “1BU16” (1 pole, B-Trip
characteristic, UL Type, 16 A).
UL 1077/ UL 508 Comparison
•
•
UL1077
– MCB can only be used by UL certified/ approved panel shops
– MCB is only “recognized”, which means the entire panel consisting of
recognized components needs additional approval by a UL inspector
UL508
– MCB is “listed”
– Every Licensed Electrician can use the MCB, not only a UL Panel Shop
– Manual Motor Controller is suitable for motor disconnect
– Tested for these applications:
– AC Motor Starting, Across the line
– AC General use
– AC Resistance
– AC Discharge Lamps (Ballast)
– AC Incandescent Lamps (Tungsten)
Competitors (V-EA, MA Circuit Breakers)
•
Crossable in fit, form and function-> DIN Rail
mountable, European style, Thermal-Magnetic MCB.
– ABB (S230-S280 series)
– AEG System (ELFA series)
– Airpax (IELR series)
– Allen-Bradley (1492-MCB series) = Weber(AS 168
series)
– Carlingswitch (D-Series)
– Cutler - Hammer (SPCL - series)
– ETA (42-01 series & 91 series)
– GE (V-Line series)
– Klöckner - Möller (FAZ-series)
– Phoenix (TMC series)
– Siemens (5S-series)
– Square-D (Merlin Gerin multi 9 series)
– Square-D Telemacenique (GB 2-MCB series, etc.)
– Weidmüller (MCB series)
•
Only crossable if customer is
able and willing to change
panel/circuit design
– Eaton/Heinemann
– IDEC
– Potter & Brumfield
Target Customers
•
Panel shops
•
Machine manufacturers which provide
complete packages
•
Any industrial plant
•
Licensed electricians/ contractors
Why Altech?
•
UL 508 LISTED
•
High Quality
•
Complete line with the most various trip
characteristics to meet all application needs
•
Most circuit breakers in stock
•
Price competitive in 10KA versions
•
One source can provide almost complete power
distribution solutions (busbars, terminal blocks,
enclosures, etc.)
MA Three Phase Adjustable
Trip Miniature Circuit Breaker
UL508 listed
CAN/CSA-C22.2 No. 14 certified
C
MA Three Phase Adjustable Trip
Miniature Circuit Breaker
The MA was designed to handle the high inrush loads of
3 phase transformers, power supplies, motors, etc.
•
•
General Specifications
– Complies with various national and international standards
e.g. UL, CSA, VDE, IEC, CE
– DIN Rail mountable
– Adjustable thermal trip allows finalization of initial designs before
procurement of the load equipment is complete
– Voltage rating: 480Y/277 V AC
– Rated current from 0.16A - 40A
– 3 poles
Accessories available (same as V-EA MCB)
– Auxiliary Switch
– Shunt Trip
– Undervoltage Trip
V-EA and MA
Circuit Breaker Accessories
Accessories can be factory or field mounted on V-EA miniature
circuit breakers and MA motor protection switches for enhanced
control and monitoring capabilities. Field mounting kits include
all necessary parts and instructions. Accessories can be gang
mounted on a single breaker (the Auxiliary Switch in the outside
position). The mounting arrangement links the internal latch-pins
for the tripping mechanisms, ensuring simultaneous trips.
Handles are linked to simplify manual resetting.
Remote Trip-Shunt Trip
•
Coil actuated, the FA Shunt Trip
allows electrical remote tripping of a
breaker. It is trip-free and the
housing and terminal specifications
are the same as for V-EA miniature
circuit breakers.
•
The Shunt Trip contains its own
contacts which break the tripping
power circuit when tripped. It is
available with trip-coils in the most
standard control voltages.
FA
Undervoltage Trip
Re-power your system under controlled
conditions following a power loss or serious
undervoltage. Altech UA Undervoltage Trips
are coupled to the tripping latch pins of the VEA or MA to which they are attached, reliably
producing trips at the drop-out voltage and
preventing resetting when less than 85% line
voltage is present. The Undervoltage Trip is
provided with at least 6-inch pigtails of
stranded fixture wire for hook-up to the V-EA or
MA line terminals.
• Reset-Hold Voltage = 0.85 x Ve
• Drop-Out Voltage = 0.35 to 0.7 x Ve
UA
Auxiliary Switch
H11U
•
Altech H Auxiliary Switch is suitable for logic interrogation and
for use as a two-circuit Form C contact. It can also function
as an auxiliary switch for control circuits.
More Accessories
FI Earth Leakage Circuit Breakers
•
FI compact Earth Leakage Circuit Breakers detect and interrupt
earth (ground) faults. They are VDE approved
for the European system of protecting people, animals,
equipment and property from dangerous line-to-ground and shock
hazard currents.
– For example:
• The insulation of shockproof equipment or their leads is
defective.
• The earth wire is interrupted.
• Earth wire and live wire have been transposed
accidentally, thus rendering live the body of a protection
Safety Class I device.
• A component which is live in normal operation is touched
during repairs.
Continued
FI 2
FI 4
•
General Specifications
– DIN Rail mountable
– Voltage rating: 415Y/240VAC
– Maximum rated line current from portable power supply 16A - 63A
– Fault Trip current from 10mA - 300mA
•
Fault Trip Current Calibration
– FI trips are calibrated at less than fault trip current for ensured safety
(Typical trip range between 66.6-83.3% fault trip current, e.g. typical
trip at 20-25mA for fault RC of 30mA)
Principle of Operation
•
In the event of a short to earth, the residual current
operated system prevents shock-hazard voltages from
remaining on the body of Safety Class I electrical
equipment or machines. For this purpose, the FI Earth
Leakage Circuit Breaker monitors the difference between
loads flowing through it and ensures that is approximately
zero. If, as a result of an earth fault, this difference exceeds
the circuit breaker’s residual operating current rating, then
the FI will disconnect the faulty equipment.
Fault Current Circuit
Residual Current Circuit
Busbar Distribution System
•
The Altech Busbar Distribution System is an
innovative way to jumper up to 57 poles of Altech
Miniature Circuit Breakers (MCB)/ Manual Motor
Controllers (MMC).
•
Advantages:
–
–
–
–
–
Installation time savings
Panel space savings
Little or no maintenance
High electrical ratings
Busbars maintain UL approval, even after being cut
Busbar Distribution System
Busbar Ordering Information
Busbar Ordering Information
Power Feed Devices
Assembly
Two Power Feed Methods