800.TEC.FUSE | littelfuse.com © 2017 Littelfuse POWR-GARD
®
Products
Rev: 081717
LPS Series Operations & Maintenance Manual
1 of 10
LPS SERIES SHUNT TRIP DISCONNECT SWITCH
Overview
The Littelfuse LPS Series disconnect switch is an integrated power controller designed to meet the requirements of
NFPA
®
70 (National Electrical Code
®
), NFPA 72 (National Fire Alarm Code
®
), ANSI/ASME A17.1 (Safety Code for Elevators and
Escalators), NFPA 13 (Installation of Sprinkler Systems) and other state and local jurisdiction requirements with regard to AC
power for elevators.
The Littelfuse LPS Series disconnect switch may be ordered in 30 A, 60 A, 100 A, 200 A or 400 A configurations, for 208,
240, 480 or 600 VAC (60 Hz), 3 or 4 wire systems. The Littelfuse LPS Series disconnect switch may be configured for use as
Service Equipment with the addition of a 2-port ground lug and the appropriate label per NEC Article 230.66 (option S).
Enclosures are available for the Littelfuse LPS Series disconnect switches which meet NEMA 1, NEMA 3R, NEMA 4/4X and
NEMA 12 standards.
The Littelfuse LPS Series disconnect switch is designed to interrupt the source of incoming AC power for a single cable or
hydraulic elevator, upon a signal from the Fire Alarm Control Panel (FACP). This is primarily to minimize the risk of electric
shock, and to prevent impact to the mechanical safety features of an elevator, caused by water released from the fire
sprinkler system.
800.TEC.FUSE | littelfuse.com © 2017 Littelfuse POWR-GARD
®
Products
Rev: 081717
LPS Series Operations & Maintenance Manual
2 of 10
LPS SERIES SHUNT TRIP DISCONNECT SWITCH
Description
The Littelfuse
®
LPS Series 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 LPS Series 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
Web Resources
Download technical information: littelfuse.com/lps
Specifications (Disconnect Switch)
Supply Voltage Rating* 208 V, 240 V, 480 V
Ampere Range 30 A, 60 A, 100 A, 200 A, 400 A
Enclosures NEMA 1 (standard)
NEMA 3R, NEMA 4, NEMA 12 (optional)
Approvals UL Listed (File: E219511)
*Contact factory for 600 V options.
Specifications (Shunt Trip)
Voltage Rating 120 V, 60 Hz
Max Inrush 4 A
Max On time 1.5 cycles
Momentary Inrush 140 VA
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%
• Pre-installed UL Listed Class J fuse holder – unique
Class J size eliminates the need for any rejection type
fuse clips
• Optional features offer flexibility for a variety of applications
• Color coded control power terminal blocks
• UL Listed package
• Cu and AI wire rated
• Pre-wired control circuits lower installation time
• Lockable operating handle meets all code and safety
requirements (accepts up to 3 locks)
• Every unit is fully tested before delivery
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)
• XPress-Ship™ service offers 48 hours direct shipment
service on select fully loaded LPS Series Shunt Trip
Disconnect Switches