Protection Relays
Current Monitoring Relays and Transducers
LSRU SERIES
Ordering Information
MODEL
LINE VOTAGE
CURRENT RANGE
5-25A
DESCRIPTION
LSRU-024-AL-2
LSRU-024-AL-3
LSRU-115-AL-1.5
LSRU-115-AL-2
LSRU-115-AL-3
LSRU-115-FC-1.5
LSRU-115-OT-1.5
LSRU-115-OT-2
LSRU-115-OT-3
LSRU-115-OR-1.5
LSRU-115-OR-2
LSRU-115-UE-2
LSRU-115-UT-2
LSRU-115-UT-3
LSRU-115-UR-2
LSRU-115-OU-1.5
LSRU-115-OU-2
LSRU-115-OU-3
24VAC
Alarm logic
24VAC
25-100A
0-10A
Alarm logic
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
115VAC
Alarm logic
5-25A
Alarm logic
25-100A
0-10A
Alarm logic
Feed control logic
0-10A
Motor control logic with overcurrent trip, adj trip delay (0.5-60s)
Motor control logic with overcurrent trip, adj trip delay (0.5-60s)
Motor control logic with overcurrent trip, adj trip delay (0.5-60s)
Motor control logic with overcurrent trip, adj restart delay (0.5-300s, manual)
Motor control logic with overcurrent trip, adj restart delay (0.5-300s, manual)
Motor control logic with undercurrent trip, adj ext restart delay (2-300m, manual)
Motor control logic with undercurrent trip, adj trip delay (0.5-60s)
Motor control logic with undercurrent trip, adj trip delay (0.5-60s)
Motor control logic with undercurrent trip, adj restart delay (0.5-300s, manual)
Motor control logic with overcurrent and undercurrent trip
Motor control logic with overcurrent and undercurrent trip
Motor control logic with overcurrent and undercurrent trip
5-25A
25-100A
0-10A
5-25A
5-25A
5-25A
25-100A
5-25A
0-10A
5-25A
25-100A
PART # KEY
O = Overcurrent Trip
U = Undercurrent Trip
T = Adj. Trip Delay (0.5-60 seconds)
1.5 = 0-10 Amps
2 = 5-25 Amps
3 = 25-100 Amps
R = Adj. Restart Delay (0.5-300 seconds, Manual)
E = Adj. Extended Restart Delay (2-300 minutes, Manual)
Specifications
Functional Characteristics
General Characteristics
Isolation
Power
600VAC rms
2 Watts
Temperature Range
Wire Size
-40° to 70°C (-40° to 158°F)
#12-24AWG
Motor Acceleration Time
When not selected as
an option:
Fixed Trip Delay
(-AL, -FC)
Fixed Restart Delay
(-AL only)
(-FC only)
2 seconds
Hole Size
0.725” diameter
7 in.-lbs.
Terminal Torque
Safety Marks
CSA, CSA-NRTL/C
CE
0.5 second
1 second
1 second
as soon as current is within limits
0.5 second
(File #46510)
Dimensions
H 42.42 mm (1.67”); W 58.42 mm (2.3”);
D 90.43 mm (3.56”)
0.5 lb. (8 oz., 226.8 g)
Weight
Input Characteristics
Control Power
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty
Mounting Method
Four #6 screws 3/4” in length
24VAC or 115VAC
Caution: This product should not be relied upon solely for safety of life or safety applications.
480VA @ 240VAC
10A @ 240VAC
General Purpose
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/lsru
Rev: 1-A-062716