Littelfuse AC6000 Industrial Shock-Block Cart Series - Manual

© 2013 Littelfuse Protection Relays & Controls
Personnel Protection
ORDERING
NUMBER
VOLTAGE
(V)
TRIP
LEVEL (mA) UL CATEGORY/CLASS
SB6100-00x-0 208
20
(Fixed)
UL 943C Class C
special-purpose GFCI
SB6100-10x-0 240
SB6100-20x-0 480
SB6100-30x-0 600
UL 943C Class D
special-purpose GFCI
SB6100-01x-0 208
6, 10, 20, 30
(Selectable)
UL 943/UL 1053
Equipment ground-fault
protective device (EGFPD)
SB6100-11x-0 240
SB6100-21x-0 480
SB6100-31x-0 600
Ordering Information
FEATURES BENEFITS
UL 943 inverse time trip curve
Detects and interrupts to protect people and reduce the
probability of nuisance tripping
Minimum trip time < 20 msec
Reduces the risk of ventricular fibrillation for leakage current of
250 mA and above
UL 943C fixed trip level
(GFCI 20 mA)
GFCI protection for systems with leakage current higher than the
standard 6 mA required by UL 943 Class A
Selectable trip levels
(EGFPD)
Provides extra safety when a customer is able to operate with a
setting below 20 mA (GFCI) and the settings above 20 mA can
reduce nuisance tripping on systems with high leakage current.
UL 943C ground monitor/
interrupt
Protects from shock by tripping if continuity of ground wire
between Industrial Shock-Block and load is broken.
Undervoltage, brownout,
chatter detection
Ensures proper operation and prolongs the internal contactor
lifetime
3 x Class T, 600 V
incoming fuses
The fuses provide overcurrent protection for a 100 A circuit and a
higher short-circuit current (SCC) rating of 50 kA.
Conformal coating
Internal circuits are conformally coated to protect against corrosion
and moisture, yet still repairable
Operator Interface
Shows unit status, alarm types, percentage of leakage current, and
allows for Test and Reset capabilities
Auxiliary Contact Provides a normally-open contact for remote indication
Features & Benefits
Simplified Circuit Diagram
Industrial
AUXILIARY
CONTACT
K
LOAD
SB-OPI
(Operator
Interface)
G
TERMINATION
DEVICE
ENCLOSED SB6100 MODELS
G
L1
L2
L3
SB6100
*
GC
* For a single-phase load; Jumper L 2 & L 3
& use L 1 & L 2 as the input terminals
A
B
Note: x=0 for open-chassis models and 1 for enclosed models
Description
Special Purpose Ground-Fault Circuit Interrupter (GFCI),
Class C and Class D
Industrial Shock Block (ISB) is a personnel protection device designed to meet
the new requirements for special-purpose GFCIs defined by UL 943C. ISB is the
first and only permanently connected Class C and Class D GFCI on the market.
Class C GFCIs is introduced to be used on systems where the line-to-line voltage
is 480 V or less with a trip level of 20 mA, while Class D GFCI is intended to be
used on 600 V systems. These improvements to the standard Class A GFCI (6 mA
trip level used on 240 V systems or less) were made to allow the use of GFCIs in
industrial facilities.
Equipment Ground-Fault Protective Device (EGFPD)
ISB is also available with adjustable protection settings as an EGFPD. The EGFPD
models can be set to trip at 6, 10, 20 or 30 mA. This offers more flexibility since
GFCI devices are not allowed to have an adjustable trip level.
Rating and Models
ISB (GFCI & EGFPD) is available for voltage from 208 to 600 V with a maximum
full load current of 100 A, and a built-in overcurrent protection supplied by
Littelfuse Class T fuses. The load can be 1-phase (line-to-line) or 3-phase,
however, cannot have a neutral. The power system can either be solidly-grounded
or high-resistance grounded.
Two options for enclosures are available: UL-recognized open-chassis models
are available for installation in existing electrical enclosure and UL-listed enclosed
models include a NEMA-4X enclosure for stand-alone installations.
Ground Wire (Load-Ground) Monitor
The ISB also monitors the ground wire (load-ground) connection between the ISB
and load. This is a required feature for GFCI devices and is optional for EGFPD
devices. If the connection is broken, the ISB will provide an alarm by changing the
state of the alarm contacts. This monitoring circuit includes an extra wire (pilot
wire) between the ISB and load (since the monitoring current is low, only a small
wire is required). At the load, the pilot wire is connected to a termination device.
The other end of the termination device is connected to the load ground (typically
the enclosure)
© 2013 Littelfuse Protection Relays & Controls
Littelfuse.com/IndustrialShockBlock
Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information.
*Patent Pending
Rev: 4-H-112613
Based on Manual Rev. 1-B-112913
SB6000 SERIES
Industrial Shock-Block
Open-Chassis Model* Enclosed Model*
Operator Interface*