Littelfuse LPS-POWr User Manual
Pre-Engineered Solution Datasheet
LPS SerieS POWr-SWitch
Shunt Trip Disconnect Switch
Features/Benefits
• Pre-engineered single unit, which makes
procurement easier than systems with
multiple components
• Reduces labor costs up to 66% and total
installation costs by over 30%
• Optional features offer flexibility for a variety
of applications
• Control power terminal block
• UL Listed package
• Lockable operating handle
• Cu and AI wire rated
• Pre-wired control circuits lower installation time
• Lockable operating handle meets all code and
safety requirements
• Every unit is fully tested before delivery
Description
The Littelfuse® POWR-Switch provides a simple
and economical solution for applications that require
selective coordination and shunt trip capabilities.
Utilizes Class J time-delay fuses that are easily
coordinated with other system overcurrent devices.
The shunt trip capability allows the POWR-Switch
to meet the ANSI/ASME standard that requires
power to be automatically disconnected before
water is turned on by the fire safety system.
Applications
• Elevator circuits
• Data processing rooms
• Building emergency systems
Options
• Control power transformer with fuses and blocks
• Fire safety interface relay
• Key to test switch
• Pilot light ”On”
• Isolated neutral lug
• Mechanical interlock auxiliary contact for hydraulic
elevators with automatic recall (5 amp 120 VAC rated)
• Fire alarm voltage monitoring relay
• Option to bypass alarm when performing maintenance
(AZ option)
Web Resources
Downloadable CAD drawings, Maintenance and Operation
Manuals, and other technical information:
Littelfuse.com/lps
More specialized configurations are also available.
Contact factory for more information.
Specifications
Voltage Rating* 208 V, 240 V, 480 V
Interrupting Rating 200 k A
Shunt Trip 120 V
Enclosures NEMA 1 (standard)
NEMA 3R, NEMA 4, NEMA 12 (optional)
Approvals UL Listed
*Contact factory for 600 V and other options.
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1 of 2
Rev: 4-B-050113
Pre-Engineered Solution Datasheet
LPS SerieS POWr-SWitch
Shunt Trip Disconnect Switch
Ordering Information
Complete catalog numbers consist of switch catalog numbers and the desired options. See example below.
Example Catalog Number from Desired Options
LPS1 T20 R1 K N1 U – AZ = Littelfuse Catalog Number LPS1T20R1KN1UAZ
LitteLfuSe
SWitch
cataLOg
Number
baSe
cataLOg #
cONtrOL
POWer
traNSfOrmer
Std. 100Va
With Pri &
Sec fuSe
(120 V Sec.)
ratiNg
ratiNg
fire Safety
iNterface reLay
(3 Pdt, 10 a, 120 V)
cOde
OPtiON
mechaNicaL
iNterLOcK aux.
cONtact fOr
hydrauLic
eLeVatOrS W/
autOmatic recaLL
(5 a ,120 Vac)
cOde
OPtiON
ratiNg
OPtiON
cOde
iSOLated
NeutraL
Lug
ratiNg
Key tO
teSt SWitch
ratiNg
cOde
OPtiON
ratiNg
PiLOt Light
cOde
OPtiON
“ON”
ratiNg
fire aLarm
ShuNt triP
mONitOriNg
cOde
OPtiON
VOLtage
reLay
ratiNg
cOde
OPtiON
OPtiONaL
eNcLOSureS
ratiNg
OPtiON
cOde
—
aZ OPtiON
(byPaSS
aLarm
duriNg
maiNt.
LPS3* 30 A 208 V T20 24 VDC Coil R2 120 V K Red R 30–60 A N6 1 NO & 1 NC A 1-Pole F1 NEMA 3R U – AZ
LPS6* 60 A 240 V T24 120 VAC Coil R1 Green G 100 A N1 2 NO & 2 NC B 3-Pole F3 NEMA 4 Y – AZ
LPS1* 100 A 480 V T48 White W 200 A N2 NEMA 12 Z – AZ
LPS2* 200 A 400 A N4 – AZ
LPS4* 400 A – AZ
*Par t Number s: Any voltage can be paired with any amperage. Options can be any combination bu t the ratings must match the option c ode. Not all options are required.
Contact fac tory for details.
Contact fac tory for 600 V and other options.
Note: When ordering - desired options must be listed in the order shown above. Typical options include Control Power Transformer, Fire Safety Interface Relay, Mechanical
Interlock Auxiliary Contact and Fire Alarm Voltage Monitoring Relay.
Dimensions of Enclosure
cataLOg SerieS amPere ratiNg Nema 1 dimeNSiONS Nema 3r dimeNSiONS Nema 4, 12 dimeNSiONS Lug SiZe
LPS3 30 24”H x 20”W x 9”D
LPS6 60 24”H x 20”W x 9”D
LPS1 100 24”H x 20”W x 9”D
LPS2 200 30”H x 20”W x 9”D
LPS4 400
Note: Over-size enclosures used to accommodate control power transformer, interface relay and terminal blocks.
48”H x 36”W x 11”D
24”H x 20”W x 8”D
24”H x 20”W x 8”D
24”H x 20”W x 8”D
30”H x 24”W x 8”D
Contact Factory Contact Factory 3/0 AL or CU
24”H x 20”W x 10”D #14 - #8 AL or CU
24”H x 20”W x 10”D #14 - #2 AL or CU
24”H x 20”W x 10”D #8 - 1/0 AL or CU
30”H x 20”W x 10”D #6 - 250kcmil AL or CU
fire
teSt)
OPtiON
cOde
Specifications (Shunt Trip)
Voltage Rating 120 V, 60 Hz
Ampere Range 30- 400 A
Max Inrush 4 A
Max On time 1.5 cycle s
Momentary Inrush 14 0 VA
Littelfuse.com © 2013 Littelfuse POWR-GARD® Products
Note: The Littelfuse LPS, LPMP and LCP products are custom
designed products that fall outside standard specifications.
More specialized configurations are also available.
Contact factory for more information.
2 of 2
Rev: 4-B-050113
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