CIRCUIT BREAKERS FOR EQUIPMENT PROTECTION
Selection Chart
TYPE
QL
QY
QZ
QF
2
2
3
3+N
120/240V
NA
277/480V
277/480V
NA
80V
NA
NA
25A
60A
(150A 3P Parallel)
63A
63A
Short to Long
Instantaneous
to Long
Instantaneous
to Long
Short to Long
10kA 120/240V AC
10kA 80V DC
3kA 277/480V AC
6kA 240/415V AC
3kA 277/480V AC
Series Trip
Series Trip
Series Trip
Switch
Series Trip
Mini Rail
DIN Rail
Surface
Mini Rail
DIN Rail
Surface
QPI Plug in System
Mini Rail
DIN Rail
Surface
Mini Rail
DIN Rail
Surface
Box Terminal
(Compression Terminal)
Box Terminal
(Compression Terminal)
Plug-in Terminal
Box Terminal
(Compression Terminal)
Box Terminal
(Compression Terminal)
Standard
Standard
Standard
Standard
MAXIMUM NUMBER
OF POLES
RATED VOLTAGE
AC(~)
DC( )
MAXIMUM CURRENT
(PARALLEL POLES)
TIME DELAY
RATED INTERRUPTING
CAPACITY
INTERNAL CIRCUIT
MOUNTING
TERMINATION
HANDLE TYPE
UL489
CSA
VDE (EN 60947-2)
CE (IEC 60947-2)
®
APPROVALS AND MARKS
DIMENSIONS (mm)
(Exact dimensions depend on configuration)
D
H
AUXILIARIES
W
VDE
UL489A
VDE (EN 60947-2)
CE (IEC 60947-2)
UL1077
CSA
VDE (EN 60947-2)
CE (IEC 60947-2)
®
VDE
VDE
VDE (EN 60947-2)
CE (IEC 60947-2)
UL1077
CSA
VDE
®
H
93.0
93.0
97.0
86.0
W
13.0
13.0
13.0
19.5
D
66.0
66.0
66.0
66.0
Auxiliary and/or
Alarm Switch
(Extra 6.5mm Module)
Auxiliary and/or
Alarm Switch
(Extra 6.5mm Module)
Auxiliary and/or
Alarm Switch
(Extra 6.5mm Module)
Auxiliary and/or
Alarm Switch
(Extra 6.5mm Module)
B FRAME
C FRAME
D FRAME
E FRAME
F FRAME
L FRAME
2
3
6
6
3
3
240V
277V
277/480V
240/415V
525V
240/415V
65V
65V
80V
125V
375V
125V
25A
30A
100A
(250A 3P Parallel)
100A
250A
(750A 3P Parallel)
600A
(1500A 3P Parallel)
Instantaneous
to Long
Instantaneous
to Long
Instantaneous
to Ultra Long
Instantaneous
to Long
Medium
Medium
1kA 240V AC
0.5kA 65V DC
3kA 277V AC
3kA 240V AC
1kA 65V DC
10kA/5kA
120/240V AC
2kA 277/480V AC
10kA 80V DC
6kA 240/415 V AC
6kA 125V DC
25kA 415V AC
15kA 525V AC
25kA 80V DC
20kA 415V AC
20kA 125V DC
Series Trip
Shunt Trip
Relay Trip
Series Trip
Switch
Series Trip
Shunt Trip
Relay Trip
Dual Control
Switch
Series Trip
Shunt Trip
Relay Trip
Switch
Series Trip
Switch
Series Trip
Thread Neck Mount
Snap-in
Clip-in
Front Mounting
Snap-in
Front Mounting
Centre Lock
Snap-in
Rail and Surface
Front Mounting
Surface Mount
Clip Tray
Front Mounting
Surface Mount
Surface Mount
Quick-connect
Screw
Clamp
PCB Mount
Quick-connect
Screw
Clamp
PCB Mount
Quick-connect
Stud, Screw,
Clamp
Plug-in
Box Terminal
(Compression
Terminal)
Stud Terminal
Box Terminal
(Compression
Terminal)
Lug Terminal
Stud Terminal
Baton, Paddle,
Square, Rocker,
Illuminated Rocker,
Push-pull
Push-to-rest
Standard
Short
Cut-off
Standard, Short
Cut-off, Baton,
Paddle, Rocker,
Illuminated Rocker
Flush Rocker
Standard
Standard
UL1077
CSA
VDE (EN 60934)
UL1077
CSA
VDE (EN 60934)
®
®
V
D E
V
D E
UL489
UL489A
CSA
VDE (EN 60947-2)
VDE (EN 60947-3)
VDE (EN 60934)
UL1077
CE (IEC 60947-2)
UL489A
CE (IEC 60947-2)
®
Lug Terminal
Stud Terminal
Standard
UL489A
VDE (EN 60947-2)
CE (IEC 60947-2)
VDE
VDE
V
D E
40.0
51.0
64.0
132.0
210.0
300.0
17.3
18.8
19.0
26.0
100.0
150.0
40.0
46.0
47.0
66.0
100.0
105.0
Auxiliary Switch
Auxiliary Switch
Auxiliary Switch
Alarm Switch
Auxiliary Switch
Relay Trip
UVR
Auxiliary Switch
Alarm Switch
Auxiliary Switch
Alarm Switch
Relay Trip
VDE
PRINCIPLE OF THE HYDRAULIC MAGNETIC CIRCUIT BREAKERS
Armature
Trip latch
TRIP
TRIP
Pole Oil Spring Coil Tube Frame Core
1
2
3
4
Hydraulic Magnetic Circuit
Breakers (HMCB) operate on
the magnetic force produced
by the load current flowing
through a series connected
solenoid coil which is wound
around an hermetically sealed
tube containing an iron core, a
spring and a dampening fluid.
During this movement, the
hydraulic fluid regulates the
cores speed of travel, thereby
creating a controlled time delay
which is inversely proportional
to the magnitude of the current.
If the overload persists, the
core reaches the pole piece
after a time delay particular to
that current and in so doing,
the reluctance of the magnetic
circuit drops considerably, so
that the armature is attracted to
the pole face with sufficient
force to collapse the latch
mechanism
(toggle)
and
consequently trip the breaker.
With high values of overloads
or short circuit, the magnetic
flux produced by the coil is
sufficient to attract the
armature to the pole face and
trip the breaker even though
the core has not moved. This is
called the instantaneous trip
region of the circuit breaker
characteristic.
At currents below the circuit
breaker rating, the magnetic
flux in the solenoid is
insufficient to attract the core
towards the pole piece due to
the spring pressure.
This time delay is useful in that
if the overload is of short
duration, i.e. start up of motors
etc., the core returns to its rest
position once the overload
disappears.
The contacts separate, current
ceases to flow, and the core
returns to its rest position.
Where an overload occurs, i.e.
currents above the circuit
breaker rating, the magnetic
flux in the solenoid produces
sufficient pull on the core to
commence its movement
toward the pole piece.
Unlike thermal circuit breakers,
the hydraulic magnetic circuit
breaker trip point is unaffected
by ambient temperature. After
tripping, the breaker may be reclosed immediately since there
is no cooling down time
necessary.
By the nature of the principle of
operation, it is possible to
obtain
any
variation
of
time/current characteristic.
FEATURES:
• Always holds 100% rated current
independent of ambient temperature
• Always trips at 125% of rated current
independent of ambient temperature
• Immediate resetting after trip
• Any current rating possible
• Large range of time delays possible
Circuit Breaker Industries Ltd
Private Bag 2016 Isando 1600
Tripswitch Drive Elandsfontein
Gauteng South Africa
Tel: +27 11 928 2000 Fax: +27 11 392 2354
E-mail: cbi@cbi.co.za Website: www.cbi.co.za
Circuit Breaker Industries GmbH
Postfach 101240 D-86882
Landsberg Germany
Tel: +49 8191 9472900 Fax: +49 8191 94729011
E-mail: office@cbibreakers.de Website: www.cbibreakers.com
Circuit Breaker Industries Inc
35E Uwchlan Ave Suite 328
Exton PA 19341 USA
Tel: +91 610 524 9949 Fax: +91 610 524 9945
E-mail: info@cbibreakers.com Website: www.cbibreakers.com
August 2004 / June Viljoen Design Print
SUPERIOR PRODUCTS THROUGH EXPERIENCE